{"id":4833,"date":"2022-09-03T15:51:16","date_gmt":"2022-09-03T07:51:16","guid":{"rendered":"https:\/\/limegreen-okapi-448594.hostingersite.com\/?post_type=product&p=4833"},"modified":"2026-07-29T19:26:01","modified_gmt":"2026-07-29T11:26:01","slug":"d971x-wafer-type-butterfly-valves","status":"publish","type":"product","link":"https:\/\/raymonvalve.com\/fr\/product\/d971x-wafer-type-butterfly-valves\/","title":{"rendered":"D971X Vanne papillon wafer"},"content":{"rendered":"
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Engineering scope<\/div>\n

D971X Wafer Butterfly Valve selection starts with the service duty<\/h2>\n

A D971X Wafer Butterfly Valve is evaluated for compact quarter-turn isolation or regulation. A disc rotates within the body and piping bore. Offset geometry, seat construction, shaft support, flange interface and actuator torque determine sealing, wear and controllability.<\/p>\n

Before quoting this configuration, close compact installation between flanges with disc-clearance and gasket controls and record all process, mechanical, operating and documentation assumptions.<\/p>\n

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Wafer<\/h3>\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

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Application envelope<\/h3>\n

Confirm every pressure, temperature, differential-pressure and cycling case for this D971X Wafer Butterfly Valve.<\/p>\n<\/div>\n

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Installed interface<\/h3>\n

Verify ends, bore, flow direction, orientation, operator envelope, loads and maintenance access.<\/p>\n<\/div>\n

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Order-specific boundary<\/h3>\n

Published information supports initial screening; final size, class, materials, trim, operation, tests and documents are fixed in approved order records.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Existing listing data<\/div>\n

Published configuration data for D971X Wafer Butterfly Valve\u2014confirmation required<\/h2>\n

The values below are transcribed from the previous public product listing so useful model information is not lost during the quality rebuild. They are not a universal available range, certificate or order commitment. Confirm every value in the accepted quotation, tag datasheet and approved drawing.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nPrevious listing<\/th>\nRequired order check<\/th>\n<\/tr>\n<\/thead>\n
Product type<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm the exact model, construction and supplied configuration.<\/td>\n<\/tr>\n
Nominal size \/ DN<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm each ordered tag and available trim or bore combination.<\/td>\n<\/tr>\n
Pressure rating<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm governing rating standard, class and temperature basis.<\/td>\n<\/tr>\n
Temperature<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm design, operating, startup and upset metal temperatures.<\/td>\n<\/tr>\n
End connection<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm standard, facing, schedule, bore and mating interface.<\/td>\n<\/tr>\n
Flow coefficient \/ characteristic<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm calculated cases, trim, travel and installed behavior.<\/td>\n<\/tr>\n
Body \/ bonnet material<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm component grade, product form, heat treatment and records.<\/td>\n<\/tr>\n
Trim \/ closure material<\/b><\/td>\nductile iron, stainless steel, corrosion-resistant steel, titanium steel, copper alloy; valve seat: D , ethylene propylene glycol, neoprene, Hyporon, PTFE, natural rubber, etc. The electric soft-seal butterfly valve adopts a variety of parts and materials, and<\/td>\nConfirm every wetted component, hardness, coating and pairing.<\/td>\n<\/tr>\n
Seat \/ seal material<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm compatibility, leakage criterion and pressure-temperature limit.<\/td>\n<\/tr>\n
Operation \/ actuator<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm worst-case load, fail state, utilities, speed and accessories.<\/td>\n<\/tr>\n
Leakage basis<\/b><\/td>\nNot stated in the previous public listing.<\/td>\nConfirm standard, edition, test direction, medium and measurable acceptance.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Evidence boundary:<\/b> where the previous listing was incomplete or awkwardly translated, this page does not guess a value. Raymon Valve should replace provisional web data with the controlled product datasheet when it is available.<\/p>\n<\/div>\n<\/section>\n

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Specification workflow<\/div>\n

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

Use the matrix to close decisions often hidden behind the short description \u201cD971X Wafer Butterfly Valve.\u201d<\/p>\n

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Review area<\/th>\nEngineering question<\/th>\nRequired record<\/th>\n<\/tr>\n<\/thead>\n
Disc and seat geometry<\/td>\nConcentric, double-offset or triple-offset construction must match shutoff and temperature duty.<\/td>\nCapture the selection basis, approved deviation if any and the record used for acceptance.<\/td>\n<\/tr>\n
Piping interface<\/td>\nWafer, lug, flanged or welded bodies require compatible flange dimensions, gaskets and disc clearance.<\/td>\nMake this requirement auditable through the order datasheet, design review and inspection plan.<\/td>\n<\/tr>\n
Torque basis<\/td>\nSeating, bearing, packing and hydrodynamic torque must be checked at every operating case.<\/td>\nName the controlling document, responsible reviewer and inspection or calculation record.<\/td>\n<\/tr>\n
Flow duty<\/td>\nOn-off, throttling, minimum opening and velocity limits should be stated.<\/td>\nName the controlling document, responsible reviewer and inspection or calculation record.<\/td>\n<\/tr>\n
Wafer<\/td>\nConfirm flange type, inside diameter, gasket, bolt arrangement, pipe schedule and removal access.<\/td>\nName the controlling document, responsible reviewer and inspection or calculation record.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Check standards and acceptance criteria against the purchaser-approved edition before order release.<\/p>\n<\/div>\n<\/section>\n

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Application boundaries<\/div>\n

Application limits to examine before technical approval<\/h2>\n

Check disc clearance, installation orientation and transient loads; a nominal flange fit does not prove that the disc can open safely. Installed behavior can be governed by flow dynamics, deposits, operating frequency, maintenance access and the response to abnormal conditions.<\/p>\n

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Fluid composition plus minimum, normal, maximum, startup and upset cases for the D971X Wafer Butterfly Valve<\/div>\n
Valve role, operating cycles, permitted leakage, safe state and consequence of failure<\/div>\n
Pressure class, size, end connection, face-to-face and piping-interface requirements<\/div>\n
Component-level materials for pressure parts, wetted trim, seats, stem\/shaft, packing, gaskets and fasteners<\/div>\n
Worst-case torque\/thrust, cycle duty, travel time, fail behavior, minimum utility and control accessories<\/div>\n
Exact standards and editions, ITP points, material\/NDE\/pressure\/leakage tests and turnover index<\/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

Pressure and wetted-part traceability plus welding, heat treatment, hardness and inspection evidence.<\/p>\n<\/div>\n

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Inspection and tests<\/h3>\n

Hold\/witness records, material\/NDE\/pressure\/leakage\/functional results and nonconformance closure.<\/p>\n<\/div>\n<\/div>\n

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

No statement here is an unqualified certification claim; standards, editions and evidence remain subject to project review.<\/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 D971X Wafer Butterfly Valve, also highlight compact installation between flanges with disc-clearance and gasket controls. Keep an open-point register for any item that could change safety, function, cost or delivery.<\/p>\n

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Ask for a configuration tied to the real duty<\/h2>\n

Send the valve list and project requirements. Raymon Valve will identify missing inputs, clarify construction and return an order-specific quotation basis.<\/p>\n<\/div>\n

Submit Your Datasheet<\/a>Compare Butterfly 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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