{"id":12404,"date":"2026-04-16T11:08:36","date_gmt":"2026-04-16T03:08:36","guid":{"rendered":"https:\/\/raymonvalve.com\/?post_type=product&p=12404"},"modified":"2026-07-29T19:27:31","modified_gmt":"2026-07-29T11:27:31","slug":"double-offset-butterfly-valve","status":"publish","type":"product","link":"https:\/\/raymonvalve.com\/it\/product\/double-offset-butterfly-valve\/","title":{"rendered":"Valvola a farfalla a doppio eccentrico"},"content":{"rendered":"
\n
\n
\n
Engineering scope<\/div>\n

What controls a responsible Double-Offset Butterfly Valve selection<\/h2>\n

A Double-Offset 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

Use the name as a starting point. Technical approval still depends on the defining construction and operating characteristics of double-offset butterfly valve, the complete service envelope, installed interfaces and measurable acceptance.<\/p>\n

\n
\n

Configuration<\/h3>\n

The defining construction and operating characteristics of double-offset butterfly valve. Confirm service conditions, construction, materials, operation, testing and document requirements for double-offset butterfly valve.<\/p>\n<\/div>\n

\n

Application envelope<\/h3>\n

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

\n

Installed interface<\/h3>\n

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

\n

Order-specific boundary<\/h3>\n

Treat this page as an engineering route, then verify the actual configuration, limits and evidence in controlled project documents.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n
Existing listing data<\/div>\n

Published configuration data for Double-Offset 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>\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>\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

\n
\n
Specification workflow<\/div>\n

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

Record the question, accepted answer and proof so the Double-Offset Butterfly 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
Disc and seat geometry<\/td>\nConcentric, double-offset or triple-offset construction must match shutoff and temperature duty.<\/td>\nResolve the open point before release and retain tag-specific evidence in the final dossier.<\/td>\n<\/tr>\n
Piping interface<\/td>\nWafer, lug, flanged or welded bodies require compatible flange dimensions, gaskets and disc clearance.<\/td>\nState the measurable requirement and connect it to a drawing, procedure or test result.<\/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>\nState the measurable requirement and connect it to a drawing, procedure or test result.<\/td>\n<\/tr>\n
Configuration<\/td>\nConfirm service conditions, construction, materials, operation, testing and document requirements for double-offset butterfly valve.<\/td>\nState the measurable requirement and connect it to a drawing, procedure or test result.<\/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

\n
\n
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. Installed behavior can be governed by flow dynamics, deposits, operating frequency, maintenance access and the response to abnormal conditions.<\/p>\n

\n
Fluid composition plus minimum, normal, maximum, startup and upset cases for the Double-Offset Butterfly Valve<\/div>\n
Required valve function, operating frequency, shutoff criterion and failure consequence<\/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
Exact standards and editions, ITP points, material\/NDE\/pressure\/leakage tests and turnover index<\/div>\n<\/div>\n<\/div>\n<\/section>\n
\n
\n
Evidence and quality<\/div>\n

Define the manufacturing and test proof before release<\/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

\n
\n

Design basis<\/h3>\n

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

\n

Material identity<\/h3>\n

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

\n

Inspection and tests<\/h3>\n

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

The final configuration must be supported by the approved datasheet and drawing.<\/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

\n
\n
RFQ checklist<\/div>\n

RFQ inputs that remove avoidable assumptions<\/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 Double-Offset Butterfly Valve, also highlight the defining construction and operating characteristics of double-offset butterfly valve. List unresolved assumptions as deviations instead of embedding them silently in the offer.<\/p>\n

\n
\n

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 Butterfly Valve Options<\/a><\/div>\n<\/div>\n<\/div>\n<\/section>\n
\n
\n
Related engineering route<\/div>\n

Use the related pages to close remaining decisions<\/h2>\n
<\/p>\n

Product family<\/h3>\n

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

<\/a><\/p>\n

Project Valve Review<\/h3>\n

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

<\/a><\/p>\n

Testing and inspection<\/h3>\n

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

<\/a><\/div>\n<\/div>\n<\/section>\n

<\/p>\n