Define the application boundary for Two-Piece Trunnion Ball Valve
A Two-Piece Trunnion Ball Valve is evaluated for quarter-turn isolation or characterized rotary control. A bored ball rotates between seats. The selected bore, ball support, seat loading, stem sealing and cavity-relief arrangement determine pressure loss, operating torque and shutoff behavior.
The product name narrows the route but does not complete the specification. Resolve supported-ball construction for higher differential load, larger size or pipeline duty together with the medium, operating cases, piping interface, maintenance and evidence.
Trunnion
Supported-ball construction for higher differential load, larger size or pipeline duty. Define DBB/DIB philosophy, seat injection, cavity relief, bore, stem retention, drains and actuator torque.
Application envelope
Confirm every pressure, temperature, differential-pressure and cycling case for this Two-Piece Trunnion Ball Valve.
Installed interface
Verify ends, bore, flow direction, orientation, operator envelope, loads and maintenance access.
Order-specific boundary
Treat this page as an engineering route, then verify the actual configuration, limits and evidence in controlled project documents.
Published configuration data for Two-Piece Trunnion Ball 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 | Not stated in the previous public listing. | 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 | Not stated in the previous public listing. | 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 | Not stated in the previous public listing. | 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.
Build the technical requirement before approving the model
The table turns application inputs for Two-Piece Trunnion Ball Valve into review points and tag-linked evidence.
| Review area | Engineering question | Required record |
|---|---|---|
| Ball support | Floating or trunnion-supported construction must suit size, pressure and differential load. | State the measurable requirement and connect it to a drawing, procedure or test result. |
| Bore | Full, reduced or characterized bore must match flow, pigging and pressure-drop requirements. | Freeze the accepted value in the tag datasheet and verify it on the approved drawing. |
| Seat system | Soft, resilient or metal seating is selected from temperature, media, solids, cycling and leakage criteria. | State the measurable requirement and connect it to a drawing, procedure or test result. |
| Cavity behavior | Pressure relief direction, double-block requirements, vents and drains must be defined. | Freeze the accepted value in the tag datasheet and verify it on the approved drawing. |
| Trunnion | Define DBB/DIB philosophy, seat injection, cavity relief, bore, stem retention, drains and actuator torque. | Freeze the accepted value in the tag datasheet and verify it on the approved drawing. |
Record exact standard designations and contract editions; resolve scope gaps and purchaser options before manufacture.
Application limits to examine before technical approval
Do not select from line size and pressure class alone; differential pressure, seat load, cavity pressure and operating torque can govern the design. Also review orientation, transients, cycling, contamination, access and consequences of internal or external leakage.
Request evidence that matches the supplied design
Evidence should identify the supplied configuration, revision, heat or lot and applicable test procedure. Use the valve standards guide to separate product, rating, dimensional, end-connection and test scope.
Design basis
Tag requirements, design review, materials list and approved exception register.
Material identity
Pressure and wetted-part traceability plus welding, heat treatment, hardness and inspection evidence.
Inspection and tests
Approved ITP, procedures, calibrated instruments, results, witness records and NCR closeout.
Seat directionality and cavity-pressure behavior must be shown on the approved drawing.
No statement here is an unqualified certification claim; standards, editions and evidence remain subject to project review.
RFQ inputs that remove avoidable assumptions
A useful RFQ combines process data, piping class, construction and materials, operator/actuator requirements, acceptance criteria and delivery documents.
For a Two-Piece Trunnion Ball Valve, also highlight supported-ball construction for higher differential load, larger size or pipeline duty. Keep an open-point register for any item that could change safety, function, cost or delivery.
Request a tag-level technical review
Provide the actual application; the response will separate confirmed requirements from assumptions and identify the checks still required.
Use the related pages to close remaining decisions
Convert Two-Piece Trunnion Ball 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 Two-Piece Trunnion Ball 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 Two-Piece Trunnion Ball 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.
Two-Piece Trunnion Ball Valve questions
What information is required to select a Two-Piece Trunnion Ball 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 supported-ball construction for higher differential load, larger size or pipeline duty.
Which standards apply to a Two-Piece Trunnion Ball 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. Seat directionality and cavity-pressure behavior must be shown on the approved drawing.
How should Two-Piece Trunnion Ball Valve pressure and leakage testing be specified?
State the governing standard and approved edition, shell and closure basis, medium, pressure, duration, leakage acceptance, directionality, instruments, witness points and report format.
Can a Two-Piece Trunnion Ball Valve be supplied with an actuator?
Automation requires more than matching a mounting flange. Verify maximum load through travel, minimum supply, coupling/stem capacity, stops, controls and required failure response.
When should a Two-Piece Trunnion Ball Valve not be selected?
Do not select it when its qualified construction cannot satisfy the process, shutoff, materials, dynamics, maintenance or documentation requirements. Do not select from line size and pressure class alone; differential pressure, seat load, cavity pressure and operating torque can govern the design. The alternative should be chosen only after comparing the complete service duty.
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