{"id":950,"date":"2022-08-05T16:27:06","date_gmt":"2022-08-05T08:27:06","guid":{"rendered":"https:\/\/limegreen-okapi-448594.hostingersite.com\/?page_id=950"},"modified":"2026-07-29T22:03:58","modified_gmt":"2026-07-29T14:03:58","slug":"butterfly-valves","status":"publish","type":"page","link":"https:\/\/raymonvalve.com\/ru\/butterfly-valves\/","title":{"rendered":"\u041f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u044b\u0435 \u0434\u0438\u0441\u043a\u043e\u0432\u044b\u0435 \u0437\u0430\u0442\u0432\u043e\u0440\u044b (Butterfly Valves)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"950\" class=\"elementor elementor-950\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-23692078 e-con-full e-flex e-con e-parent\" data-id=\"23692078\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b07582c9 elementor-widget elementor-widget-html\" data-id=\"b07582c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>:root{--rv-navy:#0b1731;--rv-navy2:#101f43;--rv-blue:#1f29bd;--rv-yellow:#f3cc18;--rv-ink:#16213a;--rv-line:#dce3ee}.rv-cat{font-family:Geologica,Arial,sans-serif;color:var(--rv-ink);font-size:16px;line-height:1.72;background:#fff;width:100vw;margin-left:calc(50% - 50vw)}.rv-cat *{box-sizing:border-box}.rv-wrap{width:min(1180px,calc(100% - 40px));margin:auto}.rv-section{padding:84px 0}.rv-kicker{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:var(--rv-blue);margin:0 0 10px}.rv-title{font-size:clamp(34px,5vw,60px);line-height:1.08;margin:0 0 22px;color:#fff;max-width:900px}.rv-h2{font-size:clamp(28px,4vw,42px);line-height:1.16;margin:0 0 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b{display:block;color:var(--rv-blue)}.rv-dark{background:linear-gradient(135deg,var(--rv-navy),var(--rv-navy2));color:#fff}.rv-dark .rv-h2{color:#fff}.rv-dark .rv-lead{color:#c8d5ef}.rv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:38px}.rv-card{background:#fff;border:1px solid var(--rv-line);border-radius:12px;padding:24px;box-shadow:0 10px 34px rgba(11,23,49,.07);position:relative;overflow:hidden}.rv-card:before{content:\"\";position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--rv-blue),#4c7cf5)}.rv-card h3{font-size:19px;line-height:1.3;margin:6px 0 10px}.rv-card p{font-size:14px;color:#5d6a81;margin:0}.rv-num{font-size:12px;color:var(--rv-blue);font-weight:800}.rv-dark .rv-card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14);box-shadow:none}.rv-dark .rv-card h3{color:#fff}.rv-dark .rv-card p{color:#c7d3eb}.rv-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:34px}.rv-step{border:1px 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var(--rv-line);padding:20px 0}.rv-faq summary{cursor:pointer;font-weight:800;list-style:none}.rv-faq summary:after{content:\"+\";float:right;color:var(--rv-blue);font-size:22px}.rv-faq details[open] summary:after{content:\"\u2212\"}.rv-faq p{color:#5b687d;margin:12px 0 0}.rv-cta{background:linear-gradient(115deg,#121f40,#0a1530);border-radius:16px;padding:46px;display:flex;justify-content:space-between;gap:30px;align-items:center}.rv-cta h2{color:#fff;margin:0 0 8px;font-size:32px}.rv-cta p{color:#c9d5ec;margin:0;max-width:650px}.rv-note{font-size:12px;color:#7b879a;margin-top:18px}@media(max-width:980px){.rv-intro{grid-template-columns:1fr}.rv-grid,.rv-flow{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.rv-wrap{width:min(100% - 28px,1180px)}.rv-section{padding:58px 0}.rv-hero{padding:82px 0 66px}.rv-grid,.rv-flow,.rv-specgrid,.rv-check{grid-template-columns:1fr}.rv-cta{display:block;padding:30px 22px}.rv-cta .rv-actions{margin-top:22px}}.rv-cardlink{text-decoration:none;color:inherit;display:block}.rv-cardlink:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(11,23,49,.13)}.rv-state{display:inline-block;margin-top:14px;font-size:11px;font-weight:800;color:#7b879a}.rv-state-live{color:#1f29bd}.rv-callout{margin-top:26px;padding:18px 20px;border-left:4px solid #f3cc18;border-radius:6px;background:#eef4ff;color:#26344d;font-size:14px;line-height:1.65}body.page-id-950 #content,body.page-id-950 .site-content,body.page-id-950 #primary,body.page-id-950 #main,body.page-id-950 .entry-content{margin-top:0!important;padding-top:0!important}body.page-id-950 .site-content>.ast-container{max-width:100%!important;padding-left:0!important;padding-right:0!important}<\/style><main class=\"rv-cat\">\n<section class=\"rv-hero\"><div class=\"rv-wrap\"><div class=\"rv-crumb\"><a href=\"\/\">Home<\/a> \/ <a href=\"\/industrial-valve-manufacturer-product\/\">Products<\/a> \/ Butterfly Valves<\/div><div class=\"rv-kicker\" style=\"color:#f3cc18\">Rotary isolation and flow control<\/div><h1 class=\"rv-title\">Industrial Butterfly Valves for Water, Process and Severe Service<\/h1><p>Raymon Valve supplies concentric, double-offset and triple-offset butterfly valve configurations selected around shutoff duty, differential pressure, seat system, materials, end connection and actuation requirements.<\/p><div class=\"rv-actions\"><a class=\"rv-btn rv-primary\" href=\"\/contact\/\">Submit Your Datasheet<\/a><a class=\"rv-btn rv-ghost\" href=\"#selection\">Review Selection Factors<\/a><\/div><div class=\"rv-pills\"><span class=\"rv-pill\">Wafer, lug and flanged bodies<\/span><span class=\"rv-pill\">Soft, PTFE and metal seat systems<\/span><span class=\"rv-pill\">Manual and actuated packages<\/span><span class=\"rv-pill\">Project testing and documentation<\/span><\/div><\/div><\/section>\n\n<section class=\"rv-section\"><div class=\"rv-wrap rv-intro\"><div class=\"rv-visual\"><img decoding=\"async\" src=\"https:\/\/raymonvalve.com\/wp-content\/uploads\/2025\/09\/ab451157-5254-4d09-a6f0-eb1b0b1dcdfb.jpg\" alt=\"Industrial butterfly valve product category\" title=\"\"><span class=\"rv-badge\">Body + disc + stem + seat + operating system<\/span><\/div><div><div class=\"rv-kicker\">Category scope<\/div><h2 class=\"rv-h2\">Select the butterfly valve from the service, not size alone<\/h2><p class=\"rv-lead\">A useful selection starts with the fluid, design pressure and temperature, shutoff requirement, cycling frequency and available installation space. The offset geometry, seat material, disc and stem materials, end connection and actuator must then be reviewed as one system.<\/p><div class=\"rv-specgrid\"><div class=\"rv-spec\"><b>Disc geometry<\/b>Concentric, double offset or triple offset<\/div><div class=\"rv-spec\"><b>Seat system<\/b>Elastomer, PTFE-family or metal seated<\/div><div class=\"rv-spec\"><b>Body style<\/b>Wafer, lug, flanged or project-defined<\/div><div class=\"rv-spec\"><b>Operation<\/b>Lever, gearbox, pneumatic or electric<\/div><div class=\"rv-spec\"><b>Service duty<\/b>Isolation, throttling or modulating control<\/div><div class=\"rv-spec\"><b>Project scope<\/b>Standards, tests, coating and documents<\/div><\/div><\/div><\/div><\/section>\n\n<section class=\"rv-section rv-dark\"><div class=\"rv-wrap\"><div class=\"rv-kicker\" style=\"color:#f3cc18\">Product families<\/div><h2 class=\"rv-h2\">Butterfly valve configurations in this category<\/h2><p class=\"rv-lead\">Product-detail pages remain clearly marked as in preparation until technical data, application boundaries, evidence and images are ready.<\/p><div class=\"rv-grid\">\n<div class=\"rv-card rv-cardlink\" aria-disabled=\"true\" data-status=\"in-preparation\"><span class=\"rv-num\">01<\/span><h3>Soft Seated Butterfly Valve<\/h3><p>Resilient-seat configurations for compatible water, air, HVAC and general utility duties.<\/p><span class=\"rv-state rv-state-live\">PAGE IN PREPARATION<\/span><\/div>\n<div class=\"rv-card rv-cardlink\" aria-disabled=\"true\" data-status=\"in-preparation\"><span class=\"rv-num\">02<\/span><h3>Wafer Butterfly Valve<\/h3><p>Compact body style installed between mating pipeline flanges with project-selected seat and disc materials.<\/p><span class=\"rv-state rv-state-live\">PAGE IN PREPARATION<\/span><\/div>\n<div class=\"rv-card rv-cardlink\" aria-disabled=\"true\" data-status=\"in-preparation\"><span class=\"rv-num\">03<\/span><h3>Lug Butterfly Valve<\/h3><p>Lugged body arrangement evaluated for line-end duty, bolt loading and maintenance requirements.<\/p><span class=\"rv-state rv-state-live\">PAGE IN PREPARATION<\/span><\/div>\n<div class=\"rv-card rv-cardlink\" aria-disabled=\"true\" data-status=\"in-preparation\"><span class=\"rv-num\">04<\/span><h3>Flanged Butterfly Valve<\/h3><p>Flanged-body construction for specified pipeline interfaces, face-to-face dimensions and installation practice.<\/p><span class=\"rv-state rv-state-live\">PAGE IN PREPARATION<\/span><\/div>\n<div class=\"rv-card rv-cardlink\" aria-disabled=\"true\" data-status=\"in-preparation\"><span class=\"rv-num\">05<\/span><h3>Double Offset Butterfly Valve<\/h3><p>High-performance geometry designed to reduce seat rubbing within its qualified operating envelope.<\/p><span class=\"rv-state rv-state-live\">PAGE IN PREPARATION<\/span><\/div>\n<div class=\"rv-card rv-cardlink\" aria-disabled=\"true\" data-status=\"in-preparation\"><span class=\"rv-num\">06<\/span><h3>Triple Offset Butterfly Valve<\/h3><p>Metal-seated severe-service configuration requiring detailed pressure, temperature and leakage review.<\/p><span class=\"rv-state rv-state-live\">PAGE IN PREPARATION<\/span><\/div>\n<div class=\"rv-card\"><span class=\"rv-num\">07<\/span><h3>PTFE Lined Butterfly Valve<\/h3><p>Corrosion-service configuration requiring media compatibility, permeation and temperature review.<\/p><span class=\"rv-state\">PAGE IN PREPARATION<\/span><\/div>\n<div class=\"rv-card\"><span class=\"rv-num\">08<\/span><h3>Actuated Butterfly Valve<\/h3><p>Electric or pneumatic package selected from valve torque, fail action, cycling and control requirements.<\/p><span class=\"rv-state\">PAGE IN PREPARATION<\/span><\/div>\n<\/div><\/div><\/section>\n\n<section id=\"selection\" class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Engineering workflow<\/div><h2 class=\"rv-h2\">How to specify an industrial butterfly valve<\/h2><p class=\"rv-lead\">Work from process duty to valve geometry, sealing system, body connection and operator. Confirm the full assembly at the most demanding operating point.<\/p><div class=\"rv-flow\"><div class=\"rv-step\"><b>1. Define service<\/b><span>Fluid, solids, corrosion, pressure and temperature<\/span><\/div><div class=\"rv-step\"><b>2. Define duty<\/b><span>Isolation, throttling, modulating or emergency action<\/span><\/div><div class=\"rv-step\"><b>3. Choose geometry<\/b><span>Concentric, double-offset or triple-offset design<\/span><\/div><div class=\"rv-step\"><b>4. Select materials<\/b><span>Body, disc, stem, seat, packing and coating<\/span><\/div><div class=\"rv-step\"><b>5. Size operation<\/b><span>Torque basis, gearbox or actuator and fail position<\/span><\/div><div class=\"rv-step\"><b>6. Verify project scope<\/b><span>Standards, tests, inspection and documentation<\/span><\/div><\/div>\n<div class=\"rv-tablewrap\"><table class=\"rv-table\"><thead><tr><th>Configuration<\/th><th>Typical screening context<\/th><th>Questions to resolve<\/th><\/tr><\/thead><tbody><tr><td>Concentric soft seated<\/td><td>Compatible utility, water and HVAC isolation or regulation<\/td><td>Seat compatibility, pressure-temperature range, flange standard and shutoff class<\/td><\/tr><tr><td>Double offset<\/td><td>Higher-performance isolation and throttling within the qualified design envelope<\/td><td>Seat construction, differential pressure, directionality, cycling and fire-safe requirement<\/td><\/tr><tr><td>Triple offset<\/td><td>High-temperature or severe-service isolation when metal seating is required<\/td><td>Torque seating, leakage criterion, sealing-lamination materials and allowable operating direction<\/td><\/tr><tr><td>PTFE-lined<\/td><td>Corrosive service where wetted-material compatibility supports its use<\/td><td>Media concentration, temperature, permeation, vacuum and lining integrity<\/td><\/tr><tr><td>Actuated package<\/td><td>On-off, modulating or ESD duty<\/td><td>Maximum valve torque, safety factor, air\/power supply, fail action, speed and controls<\/td><\/tr><\/tbody><\/table><\/div><p class=\"rv-note\">This table is a screening guide only. Final valve construction and ratings must be confirmed against the actual datasheet, applicable standard and manufacturer qualification.<\/p><\/div><\/section>\n\n<section class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Technical considerations<\/div><h2 class=\"rv-h2\">Disc, seat and pipeline interface must be checked together<\/h2><p class=\"rv-lead\">The disc travels into the pipeline bore, so the mating flange, liner, gasket arrangement and nearby fittings can affect operability. Torque and actuator sizing also depend on seat friction, bearing condition, differential pressure and flow-induced loads.<\/p><div class=\"rv-check\"><div>Verify pipe bore and disc clearance before installation<\/div><div>Confirm flange type, standard and face-to-face dimension<\/div><div>Check seat and disc compatibility with the process fluid<\/div><div>Define required leakage or shutoff acceptance criteria<\/div><div>Review flow direction and preferred shaft orientation<\/div><div>Confirm maximum differential pressure for torque sizing<\/div><div>Specify coating and corrosion allowance where applicable<\/div><div>Define factory tests, inspection hold points and records<\/div><\/div><div class=\"rv-callout\"><b>Standards review:<\/b> depending on design and project scope, the evaluation may reference API 609, ASME B16.34, API 598, ISO 5208, EN 593, applicable flange and face-to-face standards, and project-specific fire-safe or fugitive-emission requirements. Confirm the current edition and applicability before order.<\/div><\/div><\/section>\n\n<section class=\"rv-section rv-dark\"><div class=\"rv-wrap\"><div class=\"rv-kicker\" style=\"color:#f3cc18\">RFQ checklist<\/div><h2 class=\"rv-h2\">Information required for a technical quotation<\/h2><p class=\"rv-lead\">A complete datasheet lets engineering review the valve and actuator as one assembly.<\/p><div class=\"rv-check\"><div>Fluid, concentration, solids and service description<\/div><div>Size, pressure class and design conditions<\/div><div>Normal and maximum differential pressure<\/div><div>Required body style and flange standard<\/div><div>Body, disc, stem, seat and packing materials<\/div><div>Isolation or control duty and leakage requirement<\/div><div>Manual, electric or pneumatic operation and fail action<\/div><div>Standards, tests, coating, inspection and documents<\/div><\/div><\/div><\/section>\n\n<section class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Frequently asked questions<\/div><h2 class=\"rv-h2\">Industrial butterfly valve FAQ<\/h2><div class=\"rv-faq\"><details><summary>What is the difference between concentric, double-offset and triple-offset butterfly valves?<\/summary><p>The terms describe the relationship between the shaft, disc and sealing geometry. The geometry affects seat contact, torque, pressure-temperature capability and the service range for which a design is qualified.<\/p><\/details><details><summary>When should a lug body be selected instead of a wafer body?<\/summary><p>A lug body may be considered where the bolting arrangement, maintenance plan or qualified line-end service requires it. Confirm the actual lug design, pressure limits and manufacturer instructions.<\/p><\/details><details><summary>Can every butterfly valve be used for throttling?<\/summary><p>No. Stable control depends on valve geometry, opening angle, pressure drop, velocity, cavitation or noise risk, actuator behavior and the qualified limits of the seat system.<\/p><\/details><details><summary>What data is needed for actuator sizing?<\/summary><p>Provide break-to-open, run and end-to-close torque requirements at the maximum differential pressure, along with safety factor, cycling duty, operating time, supply conditions and fail position.<\/p><\/details><\/div><\/div><\/section>\n\n<section class=\"rv-section\" style=\"padding-top:0\"><div class=\"rv-wrap\"><div class=\"rv-cta\"><div><div class=\"rv-kicker\" style=\"color:#f3cc18\">Project review<\/div><h2>Send the complete butterfly valve datasheet<\/h2><p>We will review the geometry, sealing system, materials, pipeline interface, operation, testing and documentation scope.<\/p><\/div><div class=\"rv-actions\"><a class=\"rv-btn rv-primary\" href=\"\/contact\/\">Request a Project Quote<\/a><\/div><\/div><\/div><\/section>\n<!-- RV INTERNAL LINK CLUSTER V2 START --><section class=\"rv-il\" aria-labelledby=\"rv-il-title\"><style>\n.rv-il{padding:68px 22px;background:#f4f7fb;color:#10233f}.rv-il *{box-sizing:border-box}.rv-il-wrap{max-width:1180px;margin:auto}.rv-il-kicker{color:#1557a6;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.rv-il h2{margin:9px 0 12px;font-size:clamp(28px,3.2vw,42px);line-height:1.15;color:#10233f}.rv-il-lead{max-width:850px;margin:0;color:#56657a;font-size:16px}.rv-il-group{margin-top:34px}.rv-il-group h3{margin:0 0 14px;color:#10233f;font-size:20px}.rv-il-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.rv-il-card{display:flex;flex-direction:column;gap:7px;min-height:126px;padding:21px;border:1px solid #dce5f1;border-radius:12px;background:#fff;text-decoration:none!important;box-shadow:0 7px 22px rgba(15,40,75,.05);transition:transform .18s ease,border-color .18s ease}.rv-il-card:hover{transform:translateY(-2px);border-color:#1557a6}.rv-il-card b{color:#1557a6;font-size:16px;line-height:1.35}.rv-il-card span{color:#65758b;font-size:13px;line-height:1.55}@media(max-width:900px){.rv-il-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.rv-il{padding:52px 18px}.rv-il-grid{grid-template-columns:1fr}.rv-il-card{min-height:auto}}\n<\/style><div class=\"rv-il-wrap\"><div class=\"rv-il-kicker\">Curated internal navigation<\/div><h2 id=\"rv-il-title\">Butterfly valve engineering resources<\/h2><p class=\"rv-il-lead\">Connect the product family to size, seat system, offset design, hydraulic behavior and installation constraints.<\/p><div class=\"rv-il-group\"><h3>Butterfly valve selection<\/h3><div class=\"rv-il-grid\"><a class=\"rv-il-card\" href=\"\/large-diameter-butterfly-valve-selection-guide\/\"><b>Large-diameter butterfly valves<\/b><span>Hydraulics, structure, actuation and installation.<\/span><\/a><a class=\"rv-il-card\" href=\"\/butterfly-valve-selection-guide-2\/\"><b>Butterfly valve selection guide<\/b><span>Types, materials, applications and buying evidence.<\/span><\/a><a class=\"rv-il-card\" href=\"\/double-offset-vs-triple-offset-butterfly-valve\/\"><b>Double vs triple offset<\/b><span>Seat geometry, temperature and shutoff selection.<\/span><\/a><\/div><\/div><\/div><\/section><!-- RV INTERNAL LINK CLUSTER V2 END --><!-- rv-priority-one-page-v1:start --><style id=\"rv-priority-one-page-style-v1\">\n.rv-priority-one-page-v1{background:#f5f8fc}.rv-priority-summary{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}.rv-priority-summary>div,.rv-casecard{padding:23px;border:1px solid var(--rv-line);border-radius:12px;background:#fff}.rv-priority-summary b,.rv-casecard b{display:block;color:var(--rv-blue);margin-bottom:8px}.rv-priority-summary p,.rv-casecard p{margin:0;color:#5f6b7c}.rv-priority-table td:first-child{min-width:145px}.rv-casegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}.rv-casecard small{display:block;margin-top:13px;padding-top:12px;border-top:1px solid var(--rv-line);color:#697586}.rv-evidence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.rv-evidence-grid span{padding:14px 16px;border:1px solid rgba(255,255,255,.16);border-radius:9px;background:rgba(255,255,255,.06);color:#e4ecfa}.rv-priority-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.rv-priority-links a{padding:10px 14px;border:1px solid var(--rv-line);border-radius:999px;background:#fff;color:var(--rv-blue);font-size:13px;font-weight:800;text-decoration:none}.rv-eeat-note{margin-top:24px;padding:20px;border-left:4px solid var(--rv-yellow);border-radius:8px;background:rgba(255,255,255,.07);color:#cbd7ea}.rv-eeat-note b{color:#fff}.rv-eeat-note a{color:#f3cc18}@media(max-width:820px){.rv-priority-summary,.rv-casegrid,.rv-evidence-grid{grid-template-columns:1fr}.rv-priority-table{min-width:760px}}\n<\/style><section id=\"priority-one-page\" class=\"rv-section rv-priority-one-page-v1\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Priority commercial page<\/div><h2 class=\"rv-h2\">Match offset geometry, seat architecture and installation restraint to the actual system<\/h2><p class=\"rv-lead\">A compact body is not the selection basis. Disc clearance, seat loading, directionality, temperature, line forces and end-of-life torque must be resolved.<\/p><div class=\"rv-priority-summary\"><div><b>Who this page is for<\/b><p>Water, process, energy and infrastructure valve buyers.<\/p><\/div><div><b>Primary search task<\/b><p>Butterfly-valve type comparison and selection. Search-volume data is not asserted without connected GSC or keyword-tool evidence.<\/p><\/div><\/div><div class=\"rv-tablewrap\" style=\"margin-top:28px\"><table class=\"rv-table rv-priority-table\"><thead><tr><th>Decision<\/th><th>Why it changes the offer<\/th><th>Recommended review route<\/th><th>Evidence to request<\/th><\/tr><\/thead><tbody><tr><td>Geometry<\/td><td>Concentric, double-offset and triple-offset designs load seats differently.<\/td><td>Match architecture to shutoff, cycling and temperature.<\/td><td>Section drawing and seat engagement<\/td><\/tr><tr><td>Body connection<\/td><td>Wafer, lug, flanged and welded bodies carry different piping constraints.<\/td><td>Confirm end restraint, dead-end duty and removal plan.<\/td><td>Installation drawing and flange standard<\/td><\/tr><tr><td>Disc and seat<\/td><td>Velocity, particles and chemistry affect edge and liner wear.<\/td><td>Treat the complete wetted system as one compatibility decision.<\/td><td>Disc\/shaft\/seat materials<\/td><\/tr><tr><td>Torque and surge<\/td><td>Deposits and closure speed can alter actuator load and water hammer.<\/td><td>Use worst credible service torque and system limits.<\/td><td>Torque data and closure-time requirement<\/td><\/tr><\/tbody><\/table><\/div><div class=\"rv-kicker\" style=\"margin-top:38px\">Application decision patterns<\/div><h2 class=\"rv-h2\" style=\"font-size:30px\">Three realistic contexts to test the specification<\/h2><p class=\"rv-lead\">These are illustrative engineering decision scenarios\u2014not named customer projects, installed-performance claims or promises of suitability.<\/p><div class=\"rv-casegrid\"><article class=\"rv-casecard\"><b>Municipal-water header<\/b><p><strong>Decision pressure:<\/strong> Low head loss, coating, seat life and surge govern the package.<br><strong>Engineering route:<\/strong> Compare concentric or high-performance routes using water quality and velocity.<\/p><small>Local water approvals are project-specific.<\/small><\/article><article class=\"rv-casecard\"><b>Hot hydrocarbon isolation<\/b><p><strong>Decision pressure:<\/strong> Seat temperature, fire expectations and leakage direction can control design.<br><strong>Engineering route:<\/strong> Screen offset metal-seat construction with verified qualification.<\/p><small>Do not infer fire-safe scope from appearance.<\/small><\/article><article class=\"rv-casecard\"><b>Automated cooling circuit<\/b><p><strong>Decision pressure:<\/strong> Frequent movement and deposits raise end-of-life torque.<br><strong>Engineering route:<\/strong> Coordinate valve, actuator, feedback and maintenance access.<\/p><small>Actuator margin requires project utilities and cycling data.<\/small><\/article><\/div><div class=\"rv-priority-links\"><a href=\"\/butterfly-valve-selection-guide\/\">Selection guide \u2192<\/a><a href=\"\/water-treatment-valves\/\">Water applications \u2192<\/a><a href=\"\/contact\/\">Send butterfly-valve RFQ \u2192<\/a><\/div><\/div><\/section><section class=\"rv-section rv-dark\"><div class=\"rv-wrap\"><div class=\"rv-kicker\" style=\"color:#f3cc18\">E-E-A-T and approval evidence<\/div><h2 class=\"rv-h2\">Evidence that should exist before technical approval<\/h2><div class=\"rv-evidence-grid\"><span>Disc\/shaft\/seat construction<\/span><span>Face-to-face and flange interface<\/span><span>Directionality and dead-end rating<\/span><span>Torque curve<\/span><span>Coating\/lining records<\/span><span>Shutoff and qualification evidence<\/span><\/div><div class=\"rv-eeat-note\"><b>Content responsibility and limits.<\/b> This page supports early technical and commercial evaluation. Raymon Valve\u2019s content team maintains the public guidance; the responsible project engineer, purchaser and quality reviewers must approve order-specific construction, calculations, standards\/editions, materials, tests and deviations. Application patterns above are not customer case studies. Review the <a href=\"\/technical-content-review-policy\/\">technical content and evidence policy<\/a>. Updated 29 July 2026.<\/div><div class=\"rv-cta\" style=\"margin-top:28px\"><div><div class=\"rv-kicker\" style=\"color:#f3cc18\">Next decision<\/div><h2>Provide line velocity, shutoff and installation constraints<\/h2><p>Mark confirmed inputs, preliminary assumptions and open questions separately so the first review can focus on risk.<\/p><\/div><div class=\"rv-actions\"><a class=\"rv-btn rv-primary\" href=\"\/contact\/\">Request Butterfly Valve Review<\/a><\/div><\/div><\/div><\/section><!-- rv-priority-one-page-v1:end --><\/main>\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>\u0421\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u043d\u0446\u0435\u043d\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0438\u0445, \u0434\u0432\u0443\u0445\u044d\u043a\u0441\u0446\u0435\u043d\u0442\u0440\u0438\u043a\u043e\u0432\u044b\u0445, \u0442\u0440\u0435\u0445\u044d\u043a\u0441\u0446\u0435\u043d\u0442\u0440\u0438\u043a\u043e\u0432\u044b\u0445, \u043c\u0435\u0436\u0444\u043b\u0430\u043d\u0446\u0435\u0432\u044b\u0445, \u0441 \u043f\u0440\u043e\u0443\u0448\u0438\u043d\u0430\u043c\u0438 \u0438 \u043f\u0440\u0438\u0432\u043e\u0434\u043d\u044b\u0445 \u0434\u0438\u0441\u043a\u043e\u0432\u044b\u0445 \u0437\u0430\u0442\u0432\u043e\u0440\u043e\u0432 \u043f\u043e \u0433\u0435\u0440\u043c\u0435\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u0438, \u043a\u0440\u0443\u0442\u044f\u0449\u0435\u043c\u0443 \u043c\u043e\u043c\u0435\u043d\u0442\u0443, \u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u0435 \u0438 \u043c\u043e\u043d\u0442\u0430\u0436\u0443.<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"full-width","ast-site-content-layout":"full-width","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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