What controls a responsible Flanged Butterfly Valve selection
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.
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.
Flanged
Flange standard, face, drilling, gasket, bolting and installed interface. Confirm flange standard, nominal size, class, facing, finish, bore, gasket and mating-flange compatibility.
Application envelope
Confirm every pressure, temperature, differential-pressure and cycling case for this Flanged Butterfly Valve.
Installed interface
Verify ends, bore, flow direction, orientation, operator envelope, loads and maintenance access.
Order-specific boundary
Published information supports initial screening; final size, class, materials, trim, operation, tests and documents are fixed in approved order records.
Published configuration data for Flanged Butterfly Valve—confirmation required
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.
| Parameter | Previous listing | Required order check |
|---|---|---|
| Product type | Not stated in the previous public listing. | Confirm the exact model, construction and supplied configuration. |
| Nominal size / DN | Not stated in the previous public listing. | Confirm each ordered tag and available trim or bore combination. |
| Pressure rating | PN10 / 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 | Confirm governing rating standard, class and temperature basis. |
| Temperature | Not stated in the previous public listing. | Confirm design, operating, startup and upset metal temperatures. |
| End connection | ANSI, 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 | Confirm standard, facing, schedule, bore and mating interface. |
| Flow coefficient / characteristic | Not stated in the previous public listing. | Confirm calculated cases, trim, travel and installed behavior. |
| Body / bonnet material | Not stated in the previous public listing. | Confirm component grade, product form, heat treatment and records. |
| Trim / closure material | Not stated in the previous public listing. | Confirm every wetted component, hardness, coating and pairing. |
| Seat / seal material | Not stated in the previous public listing. | Confirm compatibility, leakage criterion and pressure-temperature limit. |
| Operation / actuator | Manual 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 | Confirm worst-case load, fail state, utilities, speed and accessories. |
| Leakage basis | Not stated in the previous public listing. | Confirm standard, edition, test direction, medium and measurable acceptance. |
Evidence boundary: 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.
Connect each selection decision to a controlled record
Record the question, accepted answer and proof so the Flanged Butterfly Valve proposal can be audited across disciplines.
| Review area | Engineering question | Required record |
|---|---|---|
| Disc and seat geometry | Concentric, double-offset or triple-offset construction must match shutoff and temperature duty. | State the measurable requirement and connect it to a drawing, procedure or test result. |
| Piping interface | Wafer, lug, flanged or welded bodies require compatible flange dimensions, gaskets and disc clearance. | Freeze the accepted value in the tag datasheet and verify it on the approved drawing. |
| Torque basis | Seating, bearing, packing and hydrodynamic torque must be checked at every operating case. | Capture the selection basis, approved deviation if any and the record used for acceptance. |
| Flow duty | On-off, throttling, minimum opening and velocity limits should be stated. | Make this requirement auditable through the order datasheet, design review and inspection plan. |
| Flanged | Confirm flange standard, nominal size, class, facing, finish, bore, gasket and mating-flange compatibility. | Name the controlling document, responsible reviewer and inspection or calculation record. |
A standard title alone is not acceptance. Map its scope, edition and required evidence to the valve tag.
Where this configuration may fit—and what can make it fail
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.
Use order records—not generic certificates—for acceptance
A certificate or report is useful only when its scope traces to the actual tag, materials and configuration. Use the valve standards guide to separate product, rating, dimensional, end-connection and test scope.
Design basis
Approved datasheet, drawing, bill of materials, rating basis and documented deviations.
Material identity
Pressure and wetted-part traceability plus welding, heat treatment, hardness and inspection evidence.
Inspection and tests
Hold/witness records, material/NDE/pressure/leakage/functional results and nonconformance closure.
Flange compatibility is separate from valve pressure-boundary qualification.
Qualification, testing and material suitability are conditional on the approved scope and supplied records for the actual configuration.
Data to send for a technically complete quotation
Send tag identity, quantity, fluid, all design and operating cases, line interface, function, flow data, materials, operation, testing, inspection and turnover scope.
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.
Send the service cases for engineering review
Share the datasheet, line class and evidence scope so open points and deviations can be resolved before order release.
Continue the selection review
Convert Flanged Butterfly Valve from a broad request into an auditable engineering decision
This section addresses the decision a visitor is likely trying to complete—not merely the meaning of the page title. Use it to identify required inputs, compare the proposal and specify the record that will prove acceptance.
| Decision | What to do | Evidence to retain |
|---|---|---|
| Problem statement | For Flanged Butterfly Valve, define the required system outcome, failure consequence and measurable acceptance before choosing hardware. | Functional requirement |
| Feasible routes | Compare at least the practical construction, material, sealing and actuation alternatives, including reasons for rejection. | Option and trade-off matrix |
| Boundary conditions | Check every normal, transient, startup, shutdown, maintenance and utility-loss case that can change the solution. | Approved application data |
| Validation | Connect each claimed benefit to a calculation, drawing, qualification, inspection or package-level test that applies to the order. | Verification and evidence plan |
How this Flanged Butterfly Valve guide should be used
This page does not claim that a named person, certificate, qualification, installed project or performance result applies to a future order. Product compliance is confirmed only when the accepted quotation, approved drawing, procedures and final manufacturing/test records identify the supplied configuration.
Technical requirements and standards can change. Verify the official source, contract edition, project precedence and purchaser options. See our technical content review and evidence policy, company information, inspection approach or submit a correction or application question.
Flanged Butterfly Valve questions
What information is required to select a Flanged Butterfly Valve?
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 flange standard, face, drilling, gasket, bolting and installed interface.
Which standards apply to a Flanged Butterfly Valve?
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. Flange compatibility is separate from valve pressure-boundary qualification.
How should Flanged Butterfly Valve pressure and leakage testing be specified?
Define the test configuration and measurable acceptance rather than requesting a generic factory test. Include calibrated instruments, valve position, pressure direction and tag-linked results.
Can a Flanged Butterfly Valve be supplied with an actuator?
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.
When should a Flanged Butterfly Valve not be selected?
Do not select it when its qualified construction cannot satisfy the process, shutoff, materials, dynamics, maintenance or documentation requirements. Check disc clearance, installation orientation and transient loads; a nominal flange fit does not prove that the disc can open safely. The alternative should be chosen only after comparing the complete service duty.
English 
German 
Arabic 
French 
Spanish 
Italian 
Portuguese 
Russian