Description

Technical Parameters

Introduction

The 2pc Trunnion Mounted Ball Valve is a fixed ball valve used for opening, closing, and shutting off fluids in industrial pipelines. It can be ordered in bulk or customized.

Parameter

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 of 2pc Trunnion Mounted Ball Valve

High Pressure Resistance

The 2pc Trunnion Mounted Ball Valve features a trunnion-mounted ball design that can safely withstand PN420 / ANSI 2500 high-pressure environments.

Corrosion-Resistant Materials

The valve body is made of ASTM A479 F316/F304 stainless steel, and the ball uses either a metal or soft seat, providing strong resistance to seawater, acid, alkali, and chemical media.

Long-Life Seal

The dual-piston seat or self-relief seat ensures a reliable zero-leakage seal, giving the valve a service life of 10 to 15 years.

Customization

Customization Item	Available Options
Valve Body Material	Carbon steel, stainless steel, or special alloy materials
Diameter & Pressure Rating	DN 1/2″–DN 400; PN 10–PN 420; ANSI 150–ANSI 2500
Seat Structure	Soft seat, metal seat, DIB-1 double piston seats, DIB-2 self-relieving seat
Connection Method	RF flange, special flange, or other customized connections

FAQ

Q: What is the working principle of a 2pc Trunnion Mounted Ball Valve?

A: The 2pc Trunnion Mounted Ball Valve uses upper and lower bearings to fix the rotating ball, achieving the opening and closing of pipeline media and reliable isolation.

Q: What is the main difference between this valve and a floating ball valve?

A: The ball in the 2pc Trunnion Mounted Ball Valve is fixedly supported and does not move with pressure, making it more suitable for high-pressure applications.

Q: What media is it suitable for?

A: It can be used for oil, natural gas, water, steam, and various industrial chemical media.

Q: Does the valve stem structure have a safety design?

A: Yes. The 2pc Trunnion Mounted Ball Valve uses an anti-blowout stem structure to prevent the valve stem from detaching under high pressure.

Q: Is the valve's installation direction restricted?

A: It usually supports horizontal or vertical installation, and the arrangement must be according to design requirements.

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