Product Introduction

The 3-Piece Trunnion-Mounted Ball Valve features a split-body design combined with a trunnion-mounted ball structure. It is suitable for high-pressure, large-bore, and long-term continuous service conditions, and is widely utilized in the petroleum, natural gas, and chemical industries, as well as in long-distance pipeline systems.

Technical Parameters

Parameter	Options / Description
Construction	3 pieces Flanged Split Body
Size	DN1/2" – DN10" (PN10-40 / ANSI150-ANSI300) DN1/2" – DN400 (PN100 / ANSI600) DN1/2" – DN250 (PN130-PN420 / ANSI900-ANSI2500)
Pressure Rating	PN10-420 / ANSI150-2500
Connection Method	RF Flange or other connections on request; compatible with ASME B16.5 and EN 1092-1
Valve Body Material	ASTM A105 Carbon Steel / ASTM A479 F304 / ASTM A479 F316 Stainless Steel; alloy steel available on request
Seat Material	Soft (PTFE, RTFE, PEEK) or Metal Seated
Mounting Pad for Actuator	ISO 5211
Working Temperature	-196 ℃ to +400 ℃
Face-to-Face Standard	ANSI B16.34 / ASME VIII Div.1 / EN 12516-1
Flange Facing	RF according to EN 1092-1, PN63-100, ASME B16.5, ANSI600
Flange Drilling	Metric holes according to EN 1092-1, PN63-100 / ASME B16.5, ANSI600
Tightness Class	API 598 Cl. A / ASME B16.104 / FCI 70-2 Cl. VI / GOST 54808 Cl. A / Grade A (Zero Leakage) acc. EN12266-1 / ISO 5208
Stem Design	Anti Blow-Out

Customization Capabilities

Size Range: 1/2" – 48" (Customizable per project)
Material Options: A105 Carbon Steel / F304 / F316 / Duplex Steel, etc.
Pressure Rating: PN10 – PN420 / ANSI 150 – 2500

Connection Type: Flanged (RF/RTJ) / Butt-weld / Customized Connections
Actuation: Manual / Pneumatic / Electric / Worm Gearbox
Structural Options: Fire-safe Design / Anti-static / Extended Stem
Sealing Type: Soft Sealing / Metal Sealing / Composite Sealing

Factory Capabilities

Specializing in the manufacture of high-pressure ball valves, capable of fulfilling large-bore and engineering-grade orders.

Utilizing precision CNC machining and automated assembly to ensure dimensional accuracy and sealing consistency.

Comprehensive quality control throughout the entire process: Pressure Testing, NDT, and PMI Material Verification.

Compliant with international standards such as API 6D and ISO 14313.

Products are exported to industrial markets across the Middle East, Europe, the Americas, and Southeast Asia.

Offering full support for OEM customization and long-term project supply partnerships.

FAQ

Q: What are the advantages of a 3-piece valve structure compared to 1-piece or 2-piece designs?

A: The 3-piece structure facilitates easy disassembly and maintenance; if an issue arises, the entire valve does not need to be replaced, resulting in lower repair costs.

Q: Is it suitable for use in high-pressure, long-distance pipelines?

A: Yes, it is. Featuring a trunnion-mounted ball structure combined with a high-pressure design, it offers exceptional stability and is commonly utilized in oil and gas as well as long-distance transmission systems.

Q: Does it support in-line maintenance?

A: Under certain operating conditions, the valve supports disassembly for maintenance purposes, thereby reducing downtime and enhancing overall system operational efficiency.

Q: Can it be used with media containing particles or minor impurities?

A: Yes, it can. However, we recommend selecting appropriate sealing materials based on the specific characteristics of the media to ensure a longer service life.

Q: Is it difficult to open or close the valve?

A: No, it is not. The trunnion-mounted design effectively reduces operating torque, allowing for effortless operation even with large-bore valves.

Q: Is it capable of continuous, long-term operation?

A: Yes. The structural design is engineered for sustained service conditions, offering high stability and making it ideal for continuous industrial applications.

Q: What is the typical lead time for delivery?

A: The lead time depends on the specific size and quantity ordered. Standard models are available for rapid production, while large-scale project orders can be prioritized in our production schedule.

Q: Do you provide export-standard packaging?

A: Yes, we do. We offer packaging compliant with international standards for both sea and air freight, ensuring the safe and secure transport of the valves over long distances.

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