Introduction

The 2pc Trunnion Mounted Ball Valve is a shut-off device that uses upper and lower bearings to fix the ball, achieving separation of opening, closing, and sealing. It is used in piping systems with high pressure and stringent shut-off requirements.

Specification

Parameter Item	Specification
Model	P20TB or OEM
Construction	2-piece flanged split body design
Actuator Mounting Pad	ISO 5211 standard mounting pad
Working Temperature	-196 ℃ to +400 ℃
Face-to-Face Standard	ANSI B16.34 / ASME Section VIII Div.1 / EN 12516-1
Flange Facing Standard	EN 1092-1 (PN 63–100), ASME B16.5 (ANSI 600)
Flange Drilling	EN 1092-1 PN63–100 / ASME B16.5 ANSI 600
Tightness Class	API 598 Class A / ASME B16.104 / FCI 70-2 Class VI
Leakage Standard	Grade A (Zero Leakage) according to EN 12266-1 / ISO 5208
Stem Design	Anti blow-out stem design

Features

Zero Leakage: The sealing design meets API 598 Class A and EN 12266-1 Grade A (zero leakage), with contact pressure formed by the superposition of valve seat preload and medium pressure.

Direct Connection to High-Pressure Pipelines: The flange structure complies with ASME B16.5 ANSI 600 and EN 1092-1 PN63–100, with connection dimensions consistent with the pressure rating, allowing direct installation of the valve on pipelines of the corresponding pressure rating without the need for adapters.

Universal Actuator Interface: The valve body top mounting platform conforms to ISO 5211, with standardized output shaft dimensions and bore distribution, allowing direct installation and replacement of pneumatic or electric actuators.

Applications

Oil and Gas: Used for the shut-off and isolation of pipelines, enabling flow control and emergency shutdown under high pressure and long-distance transport conditions.

Petrochemicals: Used in reaction units and process pipelines, providing shut-off for flammable or pressurized media and reducing leakage paths.

Cryogenic Energy (LNG): Used in cryogenic liquefied gas systems for on/off and isolation control during storage and transportation.

Power and Industrial Systems: Performs switching operations in steam or process fluid pipelines, ensuring segmented system operation and maintenance isolation.

FAQ

Q: How to choose between a fixed ball or floating ball structure based on operating conditions?

A: When the medium pressure is high or the diameter is large, the fixed ball structure distributes the pressure load through bearings, avoiding the high frictional torque generated by the floating ball under pressure. This is suitable for scenarios requiring control of actuator specifications or automated drive.

Q: How to verify zero leakage requirements in actual use?

A: During procurement, it is necessary to confirm that the sealing class complies with API 598 or EN 12266-1 Grade A, and to conduct shell and seal tests during delivery and acceptance. During use, attention should be paid to valve seat wear and the impact of impurities, and periodic seal tests should be performed as necessary.

Q: What interfaces and parameters should be considered when selecting an actuator?

A: It is necessary to confirm that the valve mounting platform complies with ISO 5211 standards, and to match the output torque with the valve's opening and closing torque range. Under high pressure or frequent operation conditions, a torque margin should be reserved to avoid actuator overload.

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