{"id":13387,"date":"2026-07-21T22:12:59","date_gmt":"2026-07-21T14:12:59","guid":{"rendered":"https:\/\/raymonvalve.com\/?p=13387"},"modified":"2026-07-21T22:14:21","modified_gmt":"2026-07-21T14:14:21","slug":"gate-valve-vs-globe-valve","status":"publish","type":"post","link":"https:\/\/raymonvalve.com\/fr\/gate-valve-vs-globe-valve\/","title":{"rendered":"Vanne \u00e0 opercule vs Vanne \u00e0 soupape : Isolation, \u00e9tranglement, perte de charge et service vapeur"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"13387\" class=\"elementor elementor-13387\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-510520c5 e-flex e-con-boxed e-con e-parent\" data-id=\"510520c5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b7677c6 elementor-widget elementor-widget-text-editor\" data-id=\"b7677c6\" 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var(--rv-white);\n  font-weight: 700;\n  line-height: 1.35;\n  text-align: center;\n  text-decoration: none;\n  white-space: normal;\n}\n.raymonvalve-blog-page .rv-cta a.rv-button:hover {\n  background: var(--rv-orange-dark);\n  color: var(--rv-white);\n}\n.raymonvalve-blog-page .rv-faq {\n  margin-top: 28px;\n}\n.raymonvalve-blog-page .rv-faq details {\n  margin: 0 0 12px;\n  border: 1px solid var(--rv-line);\n  border-radius: 9px;\n  background: var(--rv-white);\n  overflow: clip;\n}\n.raymonvalve-blog-page .rv-faq summary {\n  padding: 16px 46px 16px 18px;\n  color: var(--rv-navy);\n  font-weight: 700;\n  line-height: 1.45;\n  cursor: pointer;\n}\n.raymonvalve-blog-page .rv-faq details[open] summary {\n  border-bottom: 1px solid var(--rv-line);\n  background: var(--rv-soft);\n}\n.raymonvalve-blog-page .rv-faq details p {\n  padding: 16px 18px 18px;\n  margin: 0;\n}\n.raymonvalve-blog-page .rv-engineering-note {\n  margin: 38px 0 10px;\n  padding-top: 24px;\n  border-top: 1px solid var(--rv-line);\n  color: var(--rv-muted);\n  font-size: 0.92rem;\n}\n.raymonvalve-blog-page .rv-engineering-note strong {\n  color: var(--rv-ink);\n}\n@media (max-width: 760px) {\n  .raymonvalve-blog-page {\n    padding-inline: 14px;\n    font-size: 16px;\n    line-height: 1.68;\n  }\n  .raymonvalve-blog-page h2 {\n    margin-top: 40px;\n  }\n  .raymonvalve-blog-page .rv-two-col,\n  .raymonvalve-blog-page .rv-checklist {\n    grid-template-columns: 1fr;\n    gap: 14px;\n  }\n  .raymonvalve-blog-page .rv-note,\n  .raymonvalve-blog-page .rv-warning,\n  .raymonvalve-blog-page .rv-approval,\n  .raymonvalve-blog-page .rv-card,\n  .raymonvalve-blog-page .rv-checklist section,\n  .raymonvalve-blog-page .rv-sources {\n    padding: 18px;\n  }\n  .raymonvalve-blog-page .rv-hero,\n  .raymonvalve-blog-page .rv-figure {\n    margin-block: 22px 28px;\n  }\n  .raymonvalve-blog-page table {\n    min-width: 700px;\n  }\n  .raymonvalve-blog-page th,\n  .raymonvalve-blog-page td {\n    padding: 12px;\n  }\n  .raymonvalve-blog-page .rv-cta a.rv-button {\n    width: 100%;\n  }\n}\n@media (max-width: 480px) {\n  .raymonvalve-blog-page table {\n    min-width: 660px;\n  }\n  .raymonvalve-blog-page .rv-steps li {\n    padding-left: 46px;\n  }\n  .raymonvalve-blog-page .rv-steps li::before {\n    width: 32px;\n    height: 32px;\n  }\n}\n@media (prefers-reduced-motion: reduce) {\n  .raymonvalve-blog-page * {\n    scroll-behavior: auto !important;\n  }\n}\n<\/style><\/p>\n<article class=\"raymonvalve-blog-page\" aria-label=\"Gate valve versus globe valve technical comparison and selection guide\">\n<div class=\"rv-content\">\n<p class=\"rv-kicker\">Valve comparison and preliminary selection guide<\/p>\n<p class=\"rv-lead\">A gate valve is usually screened first for full-open or full-closed isolation where low pressure loss matters. A globe valve is generally better suited to throttling or frequent manual adjustment because its disc or plug provides more usable restriction at intermediate positions. Steam alone does not determine the choice: main isolation, warm-up bypass, drain, vent and pressure-reduction duties impose different requirements.<\/p>\n<div class=\"rv-approval\"><strong>Technical approval gate: do not approve the valve type until all six conditions are resolved.<\/strong>\n<ol>\n<li>The required duty is defined as isolation, throttling, bypass, drain, vent or automatic process control.<\/li>\n<li>Normal and maximum flow, differential pressure and allowable permanent pressure loss are confirmed.<\/li>\n<li>Pressure, temperature, steam condition, thermal cycling and erosion risks are documented.<\/li>\n<li>The exact body pattern, closure element, trim, flow direction and operation method are identified.<\/li>\n<li>Pressure-temperature rating, materials, packing, gasket, shut-off and leakage acceptance are reviewed.<\/li>\n<li>Drawings, tests, inspection scope, documentation and technical deviations are accepted.<\/li>\n<\/ol>\n<p>Missing inputs should remain an RFQ clarification, technical deviation or approval hold point rather than being replaced by a generic gate-versus-globe rule.<\/p>\n<\/div>\n<\/div>\n<figure class=\"rv-hero\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/raymonvalve.com\/wp-content\/uploads\/2026\/07\/gate-valve-vs-globe-valve-comparison-hero-v2.webp\" alt=\"Gate valve and globe valve compared for isolation, throttling and steam service\" width=\"1600\" height=\"900\" data-image-status=\"live-verified\" title=\"\">\n<figcaption>Concept illustration only. Final selection requires exact service data, construction and project requirements.<\/figcaption>\n<\/figure>\n<div class=\"rv-content\">\n<h2>Gate Valve or Globe Valve: Quick Selection Table<\/h2>\n<div class=\"raymonvalve-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Gate valve and globe valve quick selection comparison\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Selection question<\/th>\n<th scope=\"col\">Gate valve direction<\/th>\n<th scope=\"col\">Globe valve direction<\/th>\n<th scope=\"col\">Evidence still required<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Full-open\/full-close isolation<\/td>\n<td>Usually screened first<\/td>\n<td>May also be used<\/td>\n<td>Shut-off differential pressure, leakage requirement and cycling<\/td>\n<\/tr>\n<tr>\n<td>Frequent manual throttling<\/td>\n<td>Generally unsuitable<\/td>\n<td>Usually screened first<\/td>\n<td>Disc or plug profile, usable travel and pressure-drop data<\/td>\n<\/tr>\n<tr>\n<td>Low full-open pressure loss<\/td>\n<td>Often favorable<\/td>\n<td>Usually higher, depending on body pattern<\/td>\n<td>Exact-model Cv, Kv, loss coefficient or tested curve<\/td>\n<\/tr>\n<tr>\n<td>Main steam isolation<\/td>\n<td>Common candidate<\/td>\n<td>Conditional candidate<\/td>\n<td>Pressure-temperature rating, thermal cycles and shut-off duty<\/td>\n<\/tr>\n<tr>\n<td>Warm-up or bypass duty<\/td>\n<td>Conditional<\/td>\n<td>Often favorable<\/td>\n<td>Flow range, differential pressure, trim, velocity and noise<\/td>\n<\/tr>\n<tr>\n<td>Large pressure reduction<\/td>\n<td>Not a generic selection<\/td>\n<td>A standard globe valve may still be insufficient<\/td>\n<td>Control-valve sizing and severe-service review<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>This table provides a preliminary screening direction only. A product name, nominal size or pressure class is not sufficient to approve a valve for a specific service.<\/p>\n<h2>What Information Is Required Before Comparing the Two Designs?<\/h2>\n<p>The first question is not simply, \u201cWhich valve is better?\u201d It is, \u201cWhat function must the valve perform?\u201d A gate valve selected for infrequent isolation is being evaluated for a different duty than a globe valve used to adjust a steam warm-up line several times per shift.<\/p>\n<div class=\"rv-checklist\">\n<section>\n<h3>Process and duty data<\/h3>\n<ul>\n<li>Isolation, throttling, bypass, drain, vent or pressure control<\/li>\n<li>Medium, phase and steam condition<\/li>\n<li>Normal and design pressure and temperature<\/li>\n<li>Minimum, normal and maximum flow<\/li>\n<li>Differential pressure and allowable permanent pressure drop<\/li>\n<li>Condensate, erosion, fouling or solids risk<\/li>\n<\/ul>\n<\/section>\n<section>\n<h3>Valve and acceptance data<\/h3>\n<ul>\n<li>Nominal size, class or PN and end connection<\/li>\n<li>Operating frequency and expected travel range<\/li>\n<li>Manual, gear or actuated operation<\/li>\n<li>Shut-off and allowable leakage requirement<\/li>\n<li>Body, trim, seat, packing, gasket and bolting<\/li>\n<li>Applicable code, testing, inspection and documentation<\/li>\n<\/ul>\n<\/section>\n<\/div>\n<h2>How the Internal Design Changes Performance<\/h2>\n<div class=\"rv-two-col\">\n<section class=\"rv-card\">\n<h3>Gate valve<\/h3>\n<p>A gate valve moves its closure element across the flow passage. When fully open, many conventional designs provide a relatively direct flow path. This is why a <a href=\"https:\/\/raymonvalve.com\/gate-valves\/\">gate valve range<\/a> is commonly screened for isolation duty where the valve normally remains fully open or fully closed.<\/p>\n<p>Wedge, parallel-slide, slab, expanding and knife-gate constructions do not have identical sealing behavior, operating force or service limits.<\/p>\n<\/section>\n<section class=\"rv-card\">\n<h3>Globe valve<\/h3>\n<p>A globe valve moves a disc or plug toward or away from a seat. Its body and seat region usually redirect or restrict the flow, increasing resistance but providing more useful intermediate-position behavior. Straight-pattern, Y-pattern and angle-pattern <a href=\"https:\/\/raymonvalve.com\/globe-valves\/\">globe valve designs<\/a> must be compared separately.<\/p>\n<p>An on-off disc, throttling plug and characterized control trim are not equivalent.<\/p>\n<\/section>\n<\/div>\n<figure class=\"rv-figure\"><img decoding=\"async\" src=\"https:\/\/raymonvalve.com\/wp-content\/uploads\/2026\/07\/gate-vs-globe-valve-closure-motion-diagram-v3.webp\" alt=\"Simplified gate valve and globe valve closure motion and flow path diagram\" width=\"1200\" height=\"900\" data-image-status=\"live-verified\" title=\"\">\n<figcaption>Simplified engineering schematic. It is not an exact Raymon Valve product sectional drawing.<\/figcaption>\n<\/figure>\n<h2>Which Valve Is Better for Isolation?<\/h2>\n<h3>When a gate valve is usually the stronger candidate<\/h3>\n<p>A gate valve is generally screened first when the primary requirement is full-open\/full-close isolation and the system benefits from a relatively unrestricted open flow path. Typical cases include main-line isolation, continuous high-flow duty, larger lines where permanent pressure loss matters and services with infrequent operation.<\/p>\n<p>The selected construction must still be checked against maximum differential pressure, pressure-temperature rating, seat design, operating force, installation direction and allowable leakage.<\/p>\n<h3>When a globe valve may still be used for isolation<\/h3>\n<p>A globe valve may be considered for smaller auxiliary lines, drains, vents, equipment bypasses and duties that combine shut-off with occasional adjustment. The additional pressure loss must be acceptable, and the supplier must identify the exact disc or plug, seat design and maximum shut-off differential pressure.<\/p>\n<div class=\"rv-warning\"><strong>Do not approve \u201ctight shut-off\u201d as a standalone claim.<\/strong> Define the leakage criterion, seat construction, test method, test pressure, direction and acceptance scope. Neither valve type guarantees leakage-free performance.<\/div>\n<h2>Why Gate Valves Are Generally Poor Throttling Valves<\/h2>\n<p>A conventional gate valve is generally not selected for sustained throttling. At an intermediate position, the restricted opening can create high local velocity, turbulence and uneven loading around the gate and seats. Depending on the construction and service, this may contribute to vibration, erosion, unstable positioning or deterioration of later shut-off performance.<\/p>\n<p>Handwheel travel also does not normally provide a repeatable flow relationship. A partially open position does not establish a predictable flow rate without design-specific data.<\/p>\n<p>The wording should remain \u201cgenerally unsuitable,\u201d not \u201cnever permitted.\u201d A specially engineered construction or short-duration procedure may exist, but it requires written manufacturer approval, defined limits and an approved operating procedure.<\/p>\n<h2>Why Globe Valves Are Better Suited to Throttling<\/h2>\n<p>The globe-valve closure element moves toward or away from a defined seat opening. This movement can provide a more usable relationship between travel and restriction than the exposed edge of a partly open gate.<\/p>\n<h3>On-off disc versus throttling plug<\/h3>\n<p>A standard on-off disc may be suitable for isolation and limited adjustment, but it may not provide the same behavior as a throttling plug, characterized trim or cage-guided control trim. Request the closure-element profile, permitted travel range, flow coefficient data, differential-pressure limits and any velocity or noise restrictions.<\/p>\n<h3>Manual adjustment versus automatic process control<\/h3>\n<p>A manual globe valve can be suitable for coarse adjustment, balancing or warm-up duty. It is not automatically a control valve. Precise automatic control requires <a href=\"https:\/\/raymonvalve.com\/control-valves\/\">engineered control valve selection<\/a>, process sizing, suitable trim, an actuator, a positioner where applicable and confirmed process data. Do not select a final Cv, valve size or actuator from this comparison alone.<\/p>\n<h2>Gate Valve vs Globe Valve Pressure Drop<\/h2>\n<p>When fully open, a gate valve may align more directly with the connecting pipe, which can produce lower local resistance than a conventional straight-pattern globe valve. A globe valve typically redirects flow and restricts it around the seat region, creating greater local acceleration and turbulence.<\/p>\n<p>Body pattern matters. A Y-pattern or flow-optimized globe valve may reduce resistance compared with a conventional straight-pattern design. Reduced-port gate valves, seat geometry and actual opening position can also change the comparison.<\/p>\n<figure class=\"rv-figure\"><img decoding=\"async\" src=\"https:\/\/raymonvalve.com\/wp-content\/uploads\/2026\/07\/gate-vs-globe-valve-pressure-drop-comparison-v2.webp\" alt=\"Qualitative pressure drop comparison between gate and globe valve flow paths\" width=\"1200\" height=\"900\" data-image-status=\"live-verified\" title=\"\">\n<figcaption>Qualitative comparison only. Body pattern, reduced port, seat geometry and travel can change the result.<\/figcaption>\n<\/figure>\n<div class=\"rv-note\"><strong>Pressure-drop approval data:<\/strong> Where system performance depends on valve loss, request the exact-model Cv or Kv, flow coefficient by travel, tested pressure-drop curve or a manufacturer calculation using the specified flow and opening position.<\/div>\n<h2>Gate Valve vs Globe Valve for Steam Service<\/h2>\n<p>Steam service is not one selection category. Main isolation, equipment isolation, warm-up bypass, manual regulation, drain, vent and pressure reduction impose different operating conditions.<\/p>\n<figure class=\"rv-figure\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/raymonvalve.com\/wp-content\/uploads\/2026\/07\/gate-vs-globe-valve-steam-service-matrix-v2.webp\" alt=\"Gate and globe valve preliminary selection matrix for different steam system duties\" width=\"1200\" height=\"900\" data-image-status=\"live-verified\" title=\"\">\n<figcaption>Preliminary steam-duty matrix. Steam alone does not determine the valve type.<\/figcaption>\n<\/figure>\n<h3>Main steam isolation<\/h3>\n<p>For a valve that normally remains fully open and closes for isolation, a gate valve may be the initial direction because pressure loss is often important. Final review must still include steam condition, line size, thermal cycling, maximum differential pressure, closure time, body and bonnet construction, trim, packing and project acceptance requirements.<\/p>\n<h3>Warm-up and bypass duty<\/h3>\n<p>Warm-up and bypass valves may spend meaningful time at intermediate openings. A globe valve with an appropriate throttling plug may therefore be the better starting direction. High differential pressure, velocity, noise and thermal gradients can still require specialized trim or a sized control valve.<\/p>\n<h3>Drain and vent duty<\/h3>\n<p>Globe valves are often practical for drains, vents and smaller auxiliary lines because they can provide controlled opening. The review must still address condensate, flashing, erosion, discharge routing and the facility\u2019s approved operating and isolation procedures.<\/p>\n<h3>Large steam pressure reduction<\/h3>\n<p>A standard manual globe valve should not automatically be specified for a large pressure drop. The application may require control-valve sizing, staged pressure reduction, low-noise or severe-service trim, outlet-velocity review, downstream piping review and actuator selection.<\/p>\n<h2>Does Globe Valve Flow Direction Matter?<\/h2>\n<p>Flow direction can affect operating force, seating behavior, stability and allowable differential pressure. Confirm the direction from the body arrow, approved drawing and exact-model manufacturer instructions. A universal \u201cflow under the disc\u201d or \u201cflow over the disc\u201d rule should not be applied to every construction.<\/p>\n<figure class=\"rv-figure\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/raymonvalve.com\/wp-content\/uploads\/2026\/07\/globe-valve-flow-direction-review-schematic-v3.webp\" alt=\"Globe valve flow direction review showing body arrow and manufacturer confirmation\" width=\"1200\" height=\"900\" data-image-status=\"live-verified\" title=\"\">\n<figcaption>Example force tendencies only. Follow the body arrow and exact-model manufacturer documentation.<\/figcaption>\n<\/figure>\n<p>The RFQ should request written confirmation of flow-to-open or flow-to-close behavior, maximum differential pressure in the proposed direction, and the resulting actuator thrust or manual operating-force basis.<\/p>\n<h2>Pressure-Temperature Rating, Materials and Stem Sealing<\/h2>\n<h3>Pressure class is not the complete rating<\/h3>\n<p>A Class or PN designation does not provide one universal allowable pressure at every temperature. The review must consider the body material group, design temperature, applicable pressure-temperature table, end connection, bolting, packing, gasket and any project derating.<\/p>\n<h3>Materials to confirm<\/h3>\n<ul>\n<li>Body and bonnet<\/li>\n<li>Gate, disc or plug<\/li>\n<li>Stem, guides and cage where applicable<\/li>\n<li>Seat and hardfacing<\/li>\n<li>Packing, gasket and bolting<\/li>\n<li>Bellows or live-loaded packing where specified<\/li>\n<\/ul>\n<p>A material grade alone does not complete steam-service review. Temperature, pressure, cycling, erosion exposure, manufacturing route and project requirements must also be considered.<\/p>\n<h2>Standards, Testing and Documentation<\/h2>\n<p>A valve product standard, piping code and pressure-test standard do not prove the same thing. Use each reference only for its defined scope and confirm the project-specified edition.<\/p>\n<div class=\"raymonvalve-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Valve standards and evidence scope\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Reference<\/th>\n<th scope=\"col\">Possible role<\/th>\n<th scope=\"col\">What it does not prove<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ASME B16.34-2025<\/td>\n<td>Covered pressure-temperature ratings, materials, construction, examination, testing and marking<\/td>\n<td>Exact pressure drop or complete suitability for a specific steam duty<\/td>\n<\/tr>\n<tr>\n<td>ASME B31.1-2024<\/td>\n<td>Power-piping system requirements within its scope<\/td>\n<td>Product-specific valve performance<\/td>\n<\/tr>\n<tr>\n<td>ASME B31.3-2024<\/td>\n<td>Process-piping system requirements within its scope<\/td>\n<td>Exact valve construction, flow coefficient or operating life<\/td>\n<\/tr>\n<tr>\n<td>API 600 \/ API 602 \/ API 598 when specified<\/td>\n<td>Defined product or inspection-and-testing requirements within the applicable scope<\/td>\n<td>Universal throttling suitability, material compatibility or lifecycle performance<\/td>\n<\/tr>\n<tr>\n<td>Project specification<\/td>\n<td>Contractual design, documentation and acceptance requirements<\/td>\n<td>Supplier compliance without exact-model evidence and deviation review<\/td>\n<\/tr>\n<tr>\n<td>API RP 615<\/td>\n<td>General valve-selection guidance for hydrocarbon-processing applications within its scope<\/td>\n<td>Project-specific selection or exact-model suitability<\/td>\n<\/tr>\n<tr>\n<td>API 623<\/td>\n<td>Heavy-duty bolted-bonnet steel globe-valve requirements within its product scope<\/td>\n<td>Every globe-valve construction or every steam duty<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Raymon Valve\u2019s <a href=\"https:\/\/raymonvalve.com\/valve-standards\/\">valve standards overview<\/a> and <a href=\"https:\/\/raymonvalve.com\/valve-pressure-testing\/\">pressure-testing resource<\/a> can support internal navigation, but the current official standard, project specification and offered-model documents remain the governing evidence.<\/p>\n<div class=\"rv-sources\">\n<h3>Official scope references<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b16-34-valves-flanged-threaded-welding-end\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ASME B16.34-2025 \u2014 Valves: Flanged, Threaded and Welding End<\/a><\/li>\n<li><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b31-1-power-piping\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ASME B31.1-2024 \u2014 Power Piping<\/a><\/li>\n<li><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b31-3-process-piping\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ASME B31.3-2024 \u2014 Process Piping<\/a><\/li>\n<li><a href=\"https:\/\/www.api.org\/products-and-services\/standards\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">API Standards<\/a><\/li>\n<li><a href=\"https:\/\/www.api.org\/-\/media\/files\/publications\/2025-catalog\/06_refining_2025.pdf\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">API 2025 Refining Publications Catalog \u2014 RP 615 and API 623 scope references<\/a><\/li>\n<\/ul>\n<p>These edition labels reflect the official ASME pages reviewed for this draft. The purchase specification may invoke another edition or additional jurisdictional requirements, which must be stated explicitly in the RFQ. Current API editions and applicability should be confirmed through API&#8217;s official publication information.<\/p>\n<\/div>\n<h3>Supplier documents to request<\/h3>\n<ul>\n<li>Completed valve datasheet and technical deviation schedule<\/li>\n<li>Dimensional drawing and sectional drawing or bill of materials<\/li>\n<li>Pressure-temperature rating and material certificate scope<\/li>\n<li>Cv, Kv or pressure-loss data where relevant<\/li>\n<li>Confirmed flow direction and installation restrictions<\/li>\n<li>Shell and closure test procedure and leakage acceptance<\/li>\n<li>Inspection and test plan, NDT and PMI scope where specified<\/li>\n<li>Operation and maintenance instructions<\/li>\n<\/ul>\n<h2>When Neither a Standard Gate nor Standard Globe Valve Is Enough<\/h2>\n<p>Escalate the application for project-specific engineering review when it includes:<\/p>\n<ul>\n<li>Precise automatic flow or pressure control<\/li>\n<li>Very high or widely varying differential pressure<\/li>\n<li>High steam velocity, excessive noise or erosion risk<\/li>\n<li>Severe thermal cycling or frequent emergency operation<\/li>\n<li>Wet-steam or flashing concerns<\/li>\n<li>Actuator sizing or defined fail position<\/li>\n<li>Unacceptable stem leakage<\/li>\n<li>Critical consequences of valve failure<\/li>\n<li>Quotations without exact-model flow or operating-force data<\/li>\n<\/ul>\n<p>Possible directions may include a Y-pattern or angle-pattern globe valve, pressure-seal construction, bellows-seal arrangement, cage-guided control valve or severe-service trim. These are review directions, not final recommendations.<\/p>\n<h2>Failure Indication, Likely Cause and Verification Matrix<\/h2>\n<p>Field symptoms do not prove that the valve type is wrong, but they can reveal a mismatch between the selected construction and the actual duty. Verification should follow the plant&#8217;s isolation, depressurization, cool-down, permit and inspection procedures.<\/p>\n<div class=\"raymonvalve-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Gate and globe valve failure indication and verification matrix\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Observed indication<\/th>\n<th scope=\"col\">Possible selection or service cause<\/th>\n<th scope=\"col\">Evidence to verify<\/th>\n<th scope=\"col\">Corrective direction<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Gate valve vibrates or is noisy while partly open<\/td>\n<td>Isolation valve being used for sustained throttling; high local velocity or unstable gate loading<\/td>\n<td>Operating position, differential pressure, flow rate, gate\/seat inspection and operating history<\/td>\n<td>Restore approved full-open\/full-close duty or conduct a throttling\/control-valve review<\/td>\n<\/tr>\n<tr>\n<td>Globe valve cannot pass required flow<\/td>\n<td>Excessive body\/trim loss, undersized port, wrong opening position or incorrect flow assumptions<\/td>\n<td>Actual upstream\/downstream pressure, travel, flow and exact-model Cv\/Kv<\/td>\n<td>Recalculate the operating case; review body pattern, port and valve size<\/td>\n<\/tr>\n<tr>\n<td>High manual effort or actuator overload<\/td>\n<td>Higher-than-specified differential pressure, wrong flow direction, packing load, thermal distortion or inadequate actuator margin<\/td>\n<td>Flow arrow, pressure cases, stem condition, packing adjustment and manufacturer thrust\/torque data<\/td>\n<td>Correct the operating basis or installation issue; resize the actuator only from verified valve loads<\/td>\n<\/tr>\n<tr>\n<td>Seat leakage after throttling or frequent cycling<\/td>\n<td>Seat\/closure erosion, wire drawing, debris, thermal damage or a trim not intended for the duty<\/td>\n<td>Leakage test, seat and closure inspection, travel history, medium condition and trim specification<\/td>\n<td>Review seat\/trim design, operating procedure and required leakage acceptance<\/td>\n<\/tr>\n<tr>\n<td>Stem packing leakage<\/td>\n<td>Thermal cycling, packing material mismatch, stem damage, excessive adjustment or frequent operation<\/td>\n<td>Temperature history, packing specification, stem surface, gland condition and maintenance records<\/td>\n<td>Use the approved maintenance procedure and reassess packing, live loading or bellows-seal requirements<\/td>\n<\/tr>\n<tr>\n<td>Severe steam noise or trim erosion<\/td>\n<td>Large pressure reduction, high outlet velocity, wet-steam effects or standard trim applied to severe duty<\/td>\n<td>Pressure ratio, steam state, flow, outlet velocity, noise review and trim inspection<\/td>\n<td>Escalate to sized control-valve or severe-service trim review<\/td>\n<\/tr>\n<tr>\n<td>Water hammer or rapid pressure transient<\/td>\n<td>System condensate, rapid operation, line warm-up or control-sequence issue rather than valve type alone<\/td>\n<td>Transient history, drain function, operating sequence and system engineering review<\/td>\n<td>Follow the facility&#8217;s approved transient and condensate-control review; do not rely on valve replacement alone<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"rv-warning\"><strong>Safety boundary:<\/strong> Do not loosen packing, bonnet joints, body joints or actuators on a pressurized or hot system. Inspection and corrective work must follow the owner\u2019s isolation, lockout, depressurization, draining and permit requirements.<\/div>\n<h2>Technical Bid Normalization Table<\/h2>\n<p>Procurement should compare equivalent technical scope rather than comparing two valve names and prices. Record every omission as a clarification or deviation before commercial evaluation.<\/p>\n<div class=\"raymonvalve-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Gate and globe valve technical bid normalization table\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Bid field<\/th>\n<th scope=\"col\">Normalized comparison basis<\/th>\n<th scope=\"col\">Typical red flag<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Valve type and body pattern<\/td>\n<td>Gate construction or straight\/Y\/angle globe pattern, closure element, port and bonnet type<\/td>\n<td>Quotation states only \u201cgate valve\u201d or \u201cglobe valve\u201d<\/td>\n<\/tr>\n<tr>\n<td>Size, rating and ends<\/td>\n<td>Same NPS\/DN, class\/PN, end standard, facing and face-to-face basis<\/td>\n<td>Different connection, reduced port or dimensional basis hidden in notes<\/td>\n<\/tr>\n<tr>\n<td>Pressure-temperature basis<\/td>\n<td>Offered body material, applicable rating table, design temperature and project derating<\/td>\n<td>Pressure class quoted without temperature basis<\/td>\n<\/tr>\n<tr>\n<td>Flow performance<\/td>\n<td>Exact-model Cv\/Kv, loss coefficient or calculation at the same flow case and opening<\/td>\n<td>Generic \u201clow pressure drop\u201d statement<\/td>\n<\/tr>\n<tr>\n<td>Shut-off<\/td>\n<td>Seat design, leakage criterion, maximum closure \u0394P, test direction and acceptance<\/td>\n<td>\u201cTight shut-off\u201d or absolute leakage-free wording without defined test data<\/td>\n<\/tr>\n<tr>\n<td>Materials and sealing<\/td>\n<td>Body, trim, seat\/hardfacing, stem, packing, gasket, bolting and required traceability<\/td>\n<td>Only body material is stated<\/td>\n<\/tr>\n<tr>\n<td>Operation or actuation<\/td>\n<td>Handwheel\/gear or actuator scope, valve load basis, stroke time, supply and fail action<\/td>\n<td>Actuator selected without verified valve thrust or torque<\/td>\n<\/tr>\n<tr>\n<td>Inspection and documents<\/td>\n<td>Test standard, ITP, MTC, NDT, PMI, drawings, IOM, marking and third-party witness scope<\/td>\n<td>\u201cStandard documents included\u201d without a deliverable list<\/td>\n<\/tr>\n<tr>\n<td>Technical deviations<\/td>\n<td>Clause-by-clause deviation schedule identifying exclusions, alternatives and unresolved items<\/td>\n<td>No deviation list or exceptions buried in commercial terms<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>Gate and Globe Valve RFQ Checklist<\/h2>\n<figure class=\"rv-figure\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/raymonvalve.com\/wp-content\/uploads\/2026\/07\/gate-globe-valve-selection-rfq-checklist-v2.webp\" alt=\"Gate and globe valve selection and RFQ data checklist\" width=\"1200\" height=\"900\" data-image-status=\"live-verified\" title=\"\">\n<figcaption>Minimum RFQ data for preliminary review. The quotation should identify unresolved inputs, excluded scope, tests and deviations.<\/figcaption>\n<\/figure>\n<div class=\"rv-checklist\">\n<section>\n<h3>Process and function<\/h3>\n<ul>\n<li>Valve function and operating frequency<\/li>\n<li>Medium, phase and steam condition<\/li>\n<li>Normal and design pressure and temperature<\/li>\n<li>Minimum, normal and maximum flow<\/li>\n<li>Differential pressure and allowable pressure loss<\/li>\n<li>Shut-off and leakage requirement<\/li>\n<\/ul>\n<\/section>\n<section>\n<h3>Construction and documents<\/h3>\n<ul>\n<li>Valve type, body pattern and closure-element design<\/li>\n<li>Size, class or PN and end connection<\/li>\n<li>Body, trim, seat, packing, gasket and bolting<\/li>\n<li>Flow direction and operation method<\/li>\n<li>Design and testing standards<\/li>\n<li>MTC, ITP, NDT, PMI, drawings and deviations<\/li>\n<\/ul>\n<\/section>\n<\/div>\n<h2>Supplier Technical Evidence Matrix<\/h2>\n<div class=\"raymonvalve-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Supplier claim and technical evidence matrix\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Supplier claim<\/th>\n<th scope=\"col\">Evidence required<\/th>\n<th scope=\"col\">Approval warning<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Low pressure drop<\/td>\n<td>Exact-model Cv, Kv, loss coefficient or tested curve<\/td>\n<td>Do not accept a generic valve-type claim<\/td>\n<\/tr>\n<tr>\n<td>Suitable for throttling<\/td>\n<td>Plug or trim description and permitted operating range<\/td>\n<td>An on-off disc is not automatically throttling trim<\/td>\n<\/tr>\n<tr>\n<td>Suitable for steam<\/td>\n<td>Pressure-temperature rating, materials and duty confirmation<\/td>\n<td>\u201cSteam valve\u201d is not sufficient<\/td>\n<\/tr>\n<tr>\n<td>Bidirectional<\/td>\n<td>Drawing or written exact-model confirmation<\/td>\n<td>Direction may affect force, seating and stability<\/td>\n<\/tr>\n<tr>\n<td>Tight shut-off<\/td>\n<td>Test standard, direction and leakage acceptance<\/td>\n<td>Avoid unsupported zero-leakage wording<\/td>\n<\/tr>\n<tr>\n<td>API or ASME compliant<\/td>\n<td>Exact standard, edition, product scope and deliverable documents<\/td>\n<td>A general certificate is not product-specific evidence<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>Minimum Engineering Approval Package<\/h2>\n<p>The following evidence should be requested from the selected supplier. It is a buyer approval checklist and does not assert that every item is automatically included in a Raymon Valve quotation.<\/p>\n<div class=\"rv-checklist\">\n<section>\n<h3>Design and performance evidence<\/h3>\n<ul>\n<li>Completed datasheet and approved general arrangement<\/li>\n<li>Sectional drawing or bill of materials<\/li>\n<li>Exact body pattern, closure element, port and flow direction<\/li>\n<li>Pressure-temperature rating basis<\/li>\n<li>Cv\/Kv or pressure-loss data where required<\/li>\n<li>Maximum differential pressure and operating thrust\/torque basis<\/li>\n<\/ul>\n<\/section>\n<section>\n<h3>Materials, inspection and documentation<\/h3>\n<ul>\n<li>Material certificate and traceability scope<\/li>\n<li>Seat, hardfacing, packing, gasket and bolting details<\/li>\n<li>ITP, shell\/closure test and leakage acceptance<\/li>\n<li>NDT, PMI and third-party witness scope where specified<\/li>\n<li>Coating, preservation, marking and packing requirements<\/li>\n<li>IOM manual and complete technical deviation schedule<\/li>\n<\/ul>\n<\/section>\n<\/div>\n<div class=\"rv-note\"><strong>Evidence hierarchy:<\/strong> Project datasheets and specifications govern first. Official standards define their stated scope. Exact-model manufacturer drawings, calculations and certified records are required to support product-specific performance and compliance claims.<\/div>\n<h2>Final Selection Logic<\/h2>\n<ol class=\"rv-steps\">\n<li>Define whether the duty is isolation, throttling, bypass, draining, venting or process control.<\/li>\n<li>Confirm the flow range, differential pressure and allowable permanent pressure loss.<\/li>\n<li>Review the steam condition, design pressure and temperature, thermal cycles and erosion risk.<\/li>\n<li>Confirm body pattern, closure element, trim, materials, flow direction, sealing and operation method.<\/li>\n<li>Approve the exact model only after reviewing manufacturer data, tests, documents and technical deviations.<\/li>\n<\/ol>\n<section class=\"rv-cta\" aria-labelledby=\"rv-cta-title\">\n<h2 id=\"rv-cta-title\">Request a Gate or Globe Valve Selection Review<\/h2>\n<p>Send the valve function, medium or steam condition, size, pressure rating, normal and design pressure and temperature, flow range, allowable pressure drop, operating frequency, end connection, material requirement, leakage criterion, applicable standard and required test documents.<\/p>\n<p>Attach the line list or P&amp;ID reference, completed datasheet, applicable specification, required documentation list and any supplier deviation form. The request should ask the supplier to identify the preliminary valve direction, unresolved data, exact offered construction, excluded scope, required tests and technical deviations.<\/p>\n<p>Raymon Valve can review the preliminary datasheet direction and prepare a project-specific quotation. Final selection remains subject to the approved project specification and exact offered-model data.<\/p>\n<a class=\"rv-button\" href=\"https:\/\/raymonvalve.com\/contact\/\">Request a Valve Selection Review<\/a><\/section>\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"rv-faq\"><details>\n<summary>What is the main difference between a gate valve and a globe valve?<\/summary>\n<p>A gate valve moves its closure element across the flow path and is generally selected for full-open\/full-close isolation. A globe valve moves a disc or plug toward a seat and is generally more suitable for throttling or frequent manual adjustment.<\/p>\n<\/details><details>\n<summary>Which is better for isolation?<\/summary>\n<p>A gate valve is often screened first where low full-open pressure loss matters. A globe valve may also provide isolation in smaller auxiliary, bypass, drain or vent lines. Final selection depends on leakage, differential pressure, operating frequency and exact construction.<\/p>\n<\/details><details>\n<summary>Can a gate valve be used for throttling?<\/summary>\n<p>A conventional gate valve is generally unsuitable for sustained throttling because partial opening can create unstable flow, vibration, erosion and seat damage. Any exceptional use requires written manufacturer and project approval.<\/p>\n<\/details><details>\n<summary>Why does a globe valve usually have a higher pressure drop?<\/summary>\n<p>A conventional globe valve redirects and restricts flow around its seat area. Actual pressure loss depends on the body pattern, port, plug and opening position, so calculations should use exact-model Cv, Kv or tested data.<\/p>\n<\/details><details>\n<summary>Which valve is better for steam service?<\/summary>\n<p>Neither valve is automatically better for every steam duty. Gate valves are commonly screened for main isolation, while globe valves are often screened for warm-up, bypass, drain or manual regulating duty. Pressure, temperature, flow and differential pressure must be confirmed.<\/p>\n<\/details><details>\n<summary>Does flow direction matter for a globe valve?<\/summary>\n<p>It can. Flow direction may affect operating thrust, seating, stability and allowable differential pressure. Follow the body arrow, approved drawing and exact-model manufacturer instructions.<\/p>\n<\/details><details>\n<summary>Is a manual globe valve the same as a control valve?<\/summary>\n<p>No. A manual globe valve can provide basic or coarse adjustment. Precise automatic control requires a sized control-valve body, suitable trim, actuator, positioner where applicable and confirmed process data.<\/p>\n<\/details><details>\n<summary>What should be included in a gate or globe valve RFQ?<\/summary>\n<p>Include the valve function, medium, pressure, temperature, flow, allowable pressure drop, size, class or PN, connection, construction, materials, leakage requirement, operation method, standards, tests, documents and technical-deviation requirements.<\/p>\n<\/details><\/div>\n<div class=\"rv-engineering-note\">\n<p><strong>Engineering note:<\/strong> This article provides preliminary comparison logic and RFQ guidance. It does not replace project-specific sizing, material review, piping-code determination, responsible-engineer approval or exact-model manufacturer confirmation.<\/p>\n<p>Content prepared by the Raymon Valve Technical Content Team and attributed to the Raymon Valve organization. No individual licensed engineer or project reviewer is represented by this article. Learn more on the <a href=\"https:\/\/raymonvalve.com\/about-us\/\">About Raymon Valve<\/a> page.<\/p>\n<\/div>\n<\/div>\n<\/article>\n<p><script type=\"application\/ld+json\">{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"TechArticle\",\n      \"@id\": \"https:\/\/raymonvalve.com\/gate-valve-vs-globe-valve\/#article\",\n      \"mainEntityOfPage\": {\n        \"@type\": \"WebPage\",\n        \"@id\": \"https:\/\/raymonvalve.com\/gate-valve-vs-globe-valve\/\"\n      },\n      \"headline\": \"Gate Valve vs Globe Valve: Isolation, Throttling, Pressure Drop and Steam Service\",\n      \"description\": \"Compare gate and globe valves for isolation, throttling, pressure drop and steam duty. 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Actual pressure loss depends on the body pattern, port, plug and opening position, so calculations should use exact-model Cv, Kv or tested data.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Which valve is better for steam service?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Neither valve is automatically better for every steam duty. Gate valves are commonly screened for main isolation, while globe valves are often screened for warm-up, bypass, drain or manual regulating duty. Pressure, temperature, flow and differential pressure must be confirmed.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Does flow direction matter for a globe valve?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"It can. Flow direction may affect operating thrust, seating, stability and allowable differential pressure. Follow the body arrow, approved drawing and exact-model manufacturer instructions.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Is a manual globe valve the same as a control valve?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"No. A manual globe valve can provide basic or coarse adjustment. Precise automatic control requires a sized control-valve body, suitable trim, actuator, positioner where applicable and confirmed process data.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What should be included in a gate or globe valve RFQ?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Include the valve function, medium, pressure, temperature, flow, allowable pressure drop, size, class or PN, connection, construction, materials, leakage requirement, operation method, standards, tests, documents and technical-deviation requirements.\"\n          }\n        }\n      ]\n    }\n  ]\n}<\/script><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Valve comparison and preliminary selection guide A gate valve is usually screened first for full-open or 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