{"id":10857,"date":"2022-12-16T10:48:16","date_gmt":"2022-12-16T02:48:16","guid":{"rendered":"https:\/\/limegreen-okapi-448594.hostingersite.com\/?post_type=product&p=10857"},"modified":"2026-07-27T22:35:35","modified_gmt":"2026-07-27T14:35:35","slug":"pneumatic-butterfly-valve","status":"publish","type":"product","link":"https:\/\/raymonvalve.com\/pt\/product\/pneumatic-butterfly-valve\/","title":{"rendered":"V\u00e1lvula borboleta pneum\u00e1tica"},"content":{"rendered":"
\n
\n
\n
Engineering scope<\/div>\n

Define the application boundary for Pneumatic Butterfly Valve<\/h2>\n

A Pneumatic 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 air-operated actuator sizing, fail action, supply pressure and accessory package, the complete service envelope, installed interfaces and measurable acceptance.<\/p>\n

\n
Pneumatic<\/strong><\/p>\n

Air-operated actuator sizing, fail action, supply pressure and accessory package. State minimum\/normal air pressure, fail state, stroke time, duty, solenoid, positioner, switches and tubing requirements.<\/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

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

Build the technical requirement before approving the model<\/h2>\n

Record the question, accepted answer and proof so the Pneumatic 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>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n
Piping interface<\/td>\nWafer, lug, flanged or welded bodies require compatible flange dimensions, gaskets and disc clearance.<\/td>\nCapture the selection basis, approved deviation if any and the record used for acceptance.<\/td>\n<\/tr>\n
Torque basis<\/td>\nSeating, bearing, packing and hydrodynamic torque must be checked at every operating case.<\/td>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n
Flow duty<\/td>\nOn-off, throttling, minimum opening and velocity limits should be stated.<\/td>\nFreeze the accepted value in the tag datasheet and verify it on the approved drawing.<\/td>\n<\/tr>\n
Pneumatic<\/td>\nState minimum\/normal air pressure, fail state, stroke time, duty, solenoid, positioner, switches and tubing requirements.<\/td>\nCapture the selection basis, approved deviation if any and the record used for acceptance.<\/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. Also review orientation, transients, cycling, contamination, access and consequences of internal or external leakage.<\/p>\n

\n
Fluid composition plus minimum, normal, maximum, startup and upset cases for the Pneumatic Butterfly Valve<\/div>\n
Isolation\/control\/non-return function, frequency, directionality and measurable shutoff acceptance<\/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
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
\n
\n
Evidence and quality<\/div>\n

Define the manufacturing and test proof before release<\/h2>\n

Generic examples may explain capability but cannot close an order requirement unless they apply to the delivered valve. 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

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

Size at minimum available supply pressure and maximum valve load.<\/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

\n
\n
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 Pneumatic Butterfly Valve, also highlight air-operated actuator sizing, fail action, supply pressure and accessory package. Identify missing inputs and provisional selections so they can be closed before purchase order release.<\/p>\n

\n
\n

Turn the datasheet into a clarified quotation basis<\/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

\n
\n
FAQ<\/div>\n

Pneumatic Butterfly Valve questions<\/h2>\n
\n
\nWhat information is required to select a Pneumatic Butterfly 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 air-operated actuator sizing, fail action, supply pressure and accessory package.<\/p>\n<\/details>\n

\nWhich standards apply to a Pneumatic Butterfly 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. Size at minimum available supply pressure and maximum valve load.<\/p>\n<\/details>\n

\nHow should Pneumatic Butterfly 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 Pneumatic Butterfly Valve be supplied with an actuator?<\/summary>\n

Automation requires more than matching a mounting flange. Verify maximum load through travel, minimum supply, coupling\/stem capacity, stops, controls and required failure response.<\/p>\n<\/details>\n

\nWhen should a Pneumatic Butterfly 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. 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.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n