{"id":12418,"date":"2026-04-16T12:14:27","date_gmt":"2026-04-16T04:14:27","guid":{"rendered":"https:\/\/raymonvalve.com\/?post_type=product&p=12418"},"modified":"2026-07-29T19:27:37","modified_gmt":"2026-07-29T11:27:37","slug":"flanged-butterfly-valve","status":"publish","type":"product","link":"https:\/\/raymonvalve.com\/fr\/product\/flanged-butterfly-valve\/","title":{"rendered":"Vanne papillon \u00e0 brides"},"content":{"rendered":"
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Engineering scope<\/div>\n

What controls a responsible Flanged Butterfly Valve selection<\/h2>\n

A Flanged 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

The product name narrows the route but does not complete the specification. Resolve flange standard, face, drilling, gasket, bolting and installed interface together with the medium, operating cases, piping interface, maintenance and evidence.<\/p>\n

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Flanged<\/h3>\n

Flange standard, face, drilling, gasket, bolting and installed interface. Confirm flange standard, nominal size, class, facing, finish, bore, gasket and mating-flange compatibility.<\/p>\n<\/div>\n

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Application envelope<\/h3>\n

Confirm every pressure, temperature, differential-pressure and cycling case for this Flanged 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 Flanged 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>\nPN10 \/ PN16 \/ PN25 \/ Class 150 | Connection Type: Flanged End | Body Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel | Disc Materials: Ductile Iron, Stainless Steel 304, Stainless Steel 316, Bronze | Seat Materials: EPDM, NBR, PTFE, Metal Sea<\/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>\nANSI, DIN, JIS, BS, GB | Materials & Construction | The flanged butterfly valve body is commonly available in cast iron, ductile iron, carbon steel, and stainless steel to match different project requirements and service conditions. | Disc materials are select<\/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>\nNot stated in the previous public listing.<\/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>\nManual Lever, Worm Gear, Pneumatic Actuator, Electric Actuator | Applicable Media: Water, Air, General Service Fluids, Mildly Corrosive Media | Temperature Range: Depends on seat material and working condition<\/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

Record the question, accepted answer and proof so the Flanged Butterfly Valve proposal can be audited across disciplines.<\/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>\nState the measurable requirement and connect it to a drawing, procedure or test result.<\/td>\n<\/tr>\n
Piping interface<\/td>\nWafer, lug, flanged or welded bodies require compatible flange dimensions, gaskets and disc clearance.<\/td>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n
Torque basis<\/td>\nSeating, bearing, packing and hydrodynamic torque must be checked at every operating case.<\/td>\nCapture the selection basis, approved deviation if any and the record used for acceptance.<\/td>\n<\/tr>\n
Flow duty<\/td>\nOn-off, throttling, minimum opening and velocity limits should be stated.<\/td>\nMake this requirement auditable through the order datasheet, design review and inspection plan.<\/td>\n<\/tr>\n
Flanged<\/td>\nConfirm flange standard, nominal size, class, facing, finish, bore, gasket and mating-flange compatibility.<\/td>\nName the controlling document, responsible reviewer and inspection or calculation record.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

A standard title alone is not acceptance. Map its scope, edition and required evidence to the valve tag.<\/p>\n<\/div>\n<\/section>\n

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Application boundaries<\/div>\n

Where this configuration may fit\u2014and what can make it fail<\/h2>\n

Check disc clearance, installation orientation and transient loads; a nominal flange fit does not prove that the disc can open safely. 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 Flanged Butterfly Valve<\/div>\n
Required valve function, operating frequency, shutoff criterion and failure consequence<\/div>\n
Nominal interface plus the flange\/weld details, flow direction, face-to-face and operator envelope<\/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

Use order records\u2014not generic certificates\u2014for acceptance<\/h2>\n

A certificate or report is useful only when its scope traces to the actual tag, materials and configuration. 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

Flange compatibility is separate from valve pressure-boundary qualification.<\/p>\n

Qualification, testing and material suitability are conditional on the approved scope and supplied records for the actual configuration.<\/p>\n<\/div>\n<\/section>\n

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RFQ checklist<\/div>\n

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

Send tag identity, quantity, fluid, all design and operating cases, line interface, function, flow data, materials, operation, testing, inspection and turnover scope.<\/p>\n

For a Flanged Butterfly Valve, also highlight flange standard, face, drilling, gasket, bolting and installed interface. 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

Share the datasheet, line class and evidence scope so open points and deviations can be resolved before order release.<\/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

Continue the selection review<\/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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