The Trunnion Mounted Ball Valve features a fixed ball structure, with the ball supported by upper and lower Trunnions. This reduces the load on the ball and seat, as well as the operating torque, making it suitable for large-diameter, high-pressure, and demanding pipelines.
Technical Specifications
|
Parameter |
Standard Specification |
Options |
|
Valve Type |
Trunnion Mounted Ball Valve |
Customized |
|
Nominal Size |
2"–56" / DN50–DN1400 |
Larger Sizes |
|
Pressure Class |
Class 150–2500 |
Customized |
|
Body Construction |
2-Piece / 3-Piece |
Top Entry / Fully Welded |
|
Ball Type |
Trunnion Mounted Fixed Ball |
Customized |
|
Connection |
RF / RTJ / BW |
Hub End / Extended End |
|
Body Material |
WCB / LCB / LCC / CF8M |
A105 / LF2 / F316 / F51 |
|
Seat Material |
PTFE / RPTFE / PEEK / Metal |
Customized |
|
Seat Design |
Soft Seat / Metal Seat |
SPE / DPE |
|
Operation |
Manual / Gearbox |
Pneumatic / Electric / Hydraulic |
|
Design Standard |
API 6D / ASME B16.34 / ISO 14313 |
Customized |
|
Face-to-Face |
ASME B16.10 |
Standard |
|
Flange Standard |
ASME B16.5 / B16.47 |
Customized |
|
Testing Standard |
API 6D / API 598 |
ISO 5208 / EN 12266-1 |
|
Fire Safe |
API 607 / API 6FA |
Optional |
|
Anti-Static |
Available |
Optional |
|
DBB |
Available |
Optional |
|
Cavity Relief |
Available |
Optional |
Structure & Sealing
Fixed Ball Structure: Trunnion supports the ball, reducing ball movement and seat load under high-pressure media, thus lowering operating torque.
Spring-Loaded Seat: The spring provides preload, ensuring initial sealing under low pressure; media pressure further enhances the seat seal.
SPE / DPE: SPE can achieve self-relief of the valve cavity according to design; DPE enhances the seat seal through valve cavity pressure, specific configuration to be confirmed according to project requirements.
DBB: After valve closure, upstream and downstream seats are isolated, and valve cavity pressure can be released via Vent/Drain, facilitating seal verification and maintenance.
Customization Options
Size and Pressure: Supports different NPS/DN and pressure ratings, customizable according to project specifications.
Materials: Carbon steel, stainless steel, cryogenic steel, and alloy materials can be selected according to media, temperature, and pressure.
Seat and Seal: Supports PTFE, RPTFE, PEEK, Metal Seat, and SPE/DPE structures.
Actuator
Supports Manual, Gearbox, Pneumatic, Electric, and Hydraulic operation.
Special Functions
Configurable with DBB, Cavity Relief, Fire Safe, Anti-Static, Emergency Sealant Injection, and Drain/Vent.
Manufacturing & Quality Control
CNC Machining
Precision machining and grinding of valve body, ball, stem, and seat to control critical dimensions and sealing surface quality.
Material Validation
Provide MTC according to the order and perform PMI, hardness, and material inspection as required by the project.
Non-Destructive Testing
Provide UT, RT, MT, PT, and other NDT tests according to the Specification.
Pressure Testing
Perform Shell Test and Seat Leak Test according to applicable standards and provide test records.
Finished Product Inspection
Inspect dimensions, materials, opening and closing operation, pressure performance, appearance, and product markings.
Standards & Documentation
Product Standards: API 6D, ASME B16.34, and ISO 14313 standards can be adopted according to project requirements.
Connection Standards: Flanges can be made according to ASME B16.5/B16.47, and welded ends can be configured according to ASME B16.25.
Fire Safety and Low Emissions: Fire Safe and applicable low emission design and testing can be provided according to project requirements.
Technical Documentation: Data Sheet, GA Drawing, IOM Manual, MTC 3.1, NDT Report, and Pressure Test Certificate are available.
OEM & Supply Capability
Bulk Supply: Wholesale, OEM, project orders, and long-term repeat purchases are supported.
OEM Customization: Customization of dimensions, materials, seals, actuators, nameplates, packaging, and technical documentation is supported.
Engineering Support: Product configuration can be confirmed according to Valve Specification, Data Sheet, P&ID, and project standards.
Export Packaging: We provide rust prevention treatment, port protection, moisture-proof packaging, and export wooden/plywood crates according to transportation requirements.
FAQ
Q: What is the difference between a Trunnion Ball Valve and a Floating Ball Valve?
A: A Trunnion Ball Valve uses a fixed shaft to support the ball, reducing operating torque and making it more suitable for large-diameter and high-pressure applications.
Q: Can you provide SPE and DPE seats?
A: Yes, the specific structure depends on the pressure direction, sealing requirements, and project specifications.
Q: Can you provide DBB (Device-Based Bracket) valves?
A: We can provide DBB valves and corresponding Vent/Drain configurations based on the product structure.
Q: What materials are supported?
A: We provide carbon steel, stainless steel, cryogenic steel, and alloy materials, selected based on the medium and temperature.
Q: Can you provide actuators?
A: Yes, we support pneumatic, electric, hydraulic, and gearbox operation.
Q: Can you provide quality documentation?
A: Yes, we provide MTC, pressure test reports, dimensional reports, and NDT reports based on the order.
Q: Can you do OEM production?
A: We can customize according to customer drawings, data sheets, P&IDs, and project standards.
Q: Do you support wholesale purchases?
A: We support bulk orders, OEM orders, and long-term repeat orders, and can customize production plans based on quantity.
Q: How to get a quote?
A: Provide dimensions, pressure, material, connection method, medium, temperature, operating method, and quantity for technical confirmation and a quote.
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