{"id":13594,"date":"2026-07-27T21:52:27","date_gmt":"2026-07-27T13:52:27","guid":{"rendered":"https:\/\/raymonvalve.com\/product\/wafer-check-valve\/"},"modified":"2026-07-27T22:36:21","modified_gmt":"2026-07-27T14:36:21","slug":"wafer-check-valve","status":"publish","type":"product","link":"https:\/\/raymonvalve.com\/fr\/product\/wafer-check-valve\/","title":{"rendered":"Clapet anti-retour wafer"},"content":{"rendered":"
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Engineering scope<\/div>\n

Define the application boundary for Wafer Check Valve<\/h2>\n

A Wafer Check Valve is evaluated for automatic reverse-flow prevention. Forward flow opens the closure element and decreasing or reversing flow closes it. Dynamic response depends on velocity, travel, inertia, spring force, orientation and the system transient.<\/p>\n

The product name narrows the route but does not complete the specification. Resolve compact installation between flanges with disc-clearance and gasket controls together with the medium, operating cases, piping interface, maintenance and evidence.<\/p>\n

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Wafer<\/strong><\/p>\n

Compact installation between flanges with disc-clearance and gasket controls. Confirm flange type, inside diameter, gasket, bolt arrangement, pipe schedule and removal access.<\/p>\n<\/div>\n

Order-specific boundary<\/strong><\/p>\n

Website content is not tag-level certification. Suitability and supplied scope are established only by the accepted quotation, datasheet and drawing.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Specification workflow<\/div>\n

Connect each selection decision to a controlled record<\/h2>\n

Record the question, accepted answer and proof so the Wafer Check Valve proposal can be audited across disciplines.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Review area<\/th>\nEngineering question<\/th>\nRequired record<\/th>\n<\/tr>\n<\/thead>\n
Opening margin<\/td>\nMinimum, normal and maximum flow must keep the closure stable without excessive pressure loss.<\/td>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n
Closing response<\/td>\nReverse velocity and deceleration rate should be evaluated where surge or slam is consequential.<\/td>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n
Orientation<\/td>\nHorizontal, vertical-up or other installation positions must be permitted by the selected design.<\/td>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n
Maintenance access<\/td>\nDisc, hinge, spring, guide and seat inspection requirements influence body style and location.<\/td>\nState the measurable requirement and connect it to a drawing, procedure or test result.<\/td>\n<\/tr>\n
Wafer<\/td>\nConfirm flange type, inside diameter, gasket, bolt arrangement, pipe schedule and removal access.<\/td>\nMake this requirement auditable through the order datasheet, design review and inspection plan.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Record exact standard designations and contract editions; resolve scope gaps and purchaser options before manufacture.<\/p>\n<\/div>\n<\/section>\n

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Application boundaries<\/div>\n

Service conditions that can change or reject the selection<\/h2>\n

The label \u201cnon-slam\u201d is not a system guarantee; pump coast-down, line profile and fluid compressibility govern the transient. The final decision must cover system interactions, end-of-life loads, degradation and how failure will be detected or contained.<\/p>\n

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Complete medium composition, pressure, temperature and flow cases for the Wafer Check Valve<\/div>\n
Isolation\/control\/non-return function, frequency, directionality and measurable shutoff acceptance<\/div>\n
Pressure class, size, end connection, face-to-face and piping-interface requirements<\/div>\n
Corrosion and wear basis with exact body, trim, sealing, bolting, overlay, lining or coating materials<\/div>\n
Manual or actuated operation, maximum load, fail action, speed, utilities and accessories<\/div>\n
Applicable standards, pressure tests, special tests, inspection points and final documents<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Evidence and quality<\/div>\n

Make every critical claim traceable to the valve tag<\/h2>\n

Evidence should identify the supplied configuration, revision, heat or lot and applicable test procedure. Use the valve standards guide<\/a> to separate product, rating, dimensional, end-connection and test scope.<\/p>\n

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Design basis<\/h3>\n

Approved datasheet, drawing, bill of materials, rating basis and documented deviations.<\/p>\n<\/div>\n

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Material identity<\/h3>\n

Component certificates, heat or lot traceability, heat treatment, hardness and required PMI or NDE.<\/p>\n<\/div>\n

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Inspection and tests<\/h3>\n

Inspection releases, controlled test methods, instrument identity, measurements and final acceptance.<\/p>\n<\/div>\n<\/div>\n

A wafer body may not provide independent downstream isolation; piping procedures must reflect the design.<\/p>\n

Do not infer certification or guaranteed performance from this page. Accept only the order-specific evidence required by the purchaser.<\/p>\n<\/div>\n<\/section>\n

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RFQ checklist<\/div>\n

Data to send for a technically complete quotation<\/h2>\n

Provide a controlled valve list or datasheet covering every operating case, interface, material, operation, standard, inspection, test and document requirement.<\/p>\n

For a Wafer Check Valve, also highlight compact installation between flanges with disc-clearance and gasket controls. List unresolved assumptions as deviations instead of embedding them silently in the offer.<\/p>\n

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Send the service cases for engineering review<\/h2>\n

Provide the actual application; the response will separate confirmed requirements from assumptions and identify the checks still required.<\/p>\n<\/div>\n

Submit Your Datasheet<\/a>Compare Check Valve Options<\/a><\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Related engineering route<\/div>\n

Connect this configuration with family and quality guidance<\/h2>\n
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Product family<\/h3>\n

Compare the main constructions and selection boundaries in this valve family.<\/p>\n

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Project Valve Review<\/h3>\n

Resolve interacting pressure, temperature, corrosion, wear or project risks.<\/p>\n

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Testing and inspection<\/h3>\n

Define pressure-test scope, acceptance, instruments, witness points and records.<\/p>\n

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FAQ<\/div>\n

Wafer Check Valve questions<\/h2>\n
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\nWhat information is required to select a Wafer Check Valve?<\/summary>\n

Provide the medium and composition, all pressure and temperature cases, nominal size, flow or differential pressure where relevant, required function, end connections, materials, shutoff criterion, operation, standards, inspection and documentation. For this configuration, the review must specifically address compact installation between flanges with disc-clearance and gasket controls.<\/p>\n<\/details>\n

\nWhich standards apply to a Wafer Check Valve?<\/summary>\n

The answer depends on the product construction, project jurisdiction and purchaser specification. A product standard may cover design scope while separate standards govern pressure-temperature rating, dimensions, ends, pressure testing, fire safety, emissions or materials. A wafer body may not provide independent downstream isolation; piping procedures must reflect the design.<\/p>\n<\/details>\n

\nHow should Wafer Check Valve pressure and leakage testing be specified?<\/summary>\n

State the governing standard and approved edition, shell and closure basis, medium, pressure, duration, leakage acceptance, directionality, instruments, witness points and report format.<\/p>\n<\/details>\n

\nCan a Wafer Check Valve be supplied with an actuator?<\/summary>\n

Yes when the valve\/actuator interface and load cases are engineered together. Define safe state, utility loss, speed, frequency, accessories, feedback, interlocks and assembly-level testing.<\/p>\n<\/details>\n

\nWhen should a Wafer Check Valve not be selected?<\/summary>\n

Do not select it when its qualified construction cannot satisfy the process, shutoff, materials, dynamics, maintenance or documentation requirements. The label \u201cnon-slam\u201d is not a system guarantee; pump coast-down, line profile and fluid compressibility govern the transient. The alternative should be chosen only after comparing the complete service duty.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n