Forged Steel Trunnion Ball Valve

Product Details

The forged steel trunnion mounted ball valve has been designed two piece body type or three piece body type and with two floating seats, which are movable under the pressure of medium. Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats can attach the ball’s surface tightly, other more, pressure of medium also can push seats to attach ball tightly to ensure sealing more reliable. Ball valves are widely used in petroleum refining, chemical, paper making, pharmacy, food, water power, municipal, steel and other industries. Among them, sulfur-resistant series ball valves are particularly suitable for long-distance pipeline for transmission of high-corrosion natural gas with sulphuret hydrogen medium and many impurites.

The trunnion ball valve is equipped with a movable seat seal ring which can generate displacement under the pressure of medium. In case that any medium pressure exists, the pressure will press the valve seat seal ring onto the ball tightly, guaranteeing the sealing performance of the ball valve.

Design Features

The ball valve are designed in accordance with ISO14313、API 6D、BS 5351、GB/T 19672;

Simple structure with good sealing performance and small torque;

Full bore and reduced bore design with the minimum flow resistance (zero actually);

Emergency sealant injection;

Cavity pressure self relief;

Independent ball and stem;

Low emission packing;

Fire safe, anti-static and anti-blowout stem design;

Valve seat function DBB, DIB-1, DIB-2;

Optional extended bonnet.

Product Range

Body material: forged steel, stainless steel, etc.
Nominal diameter:1/2"～36"

End Connection: RF, RTJ, BW

Pressure range: Class150～600

Operation: Wrench, worm gear, electric actuator, pneumatic actuator, gas over oil actuator and electro-hydraulic actuator

Product Description

Forged Trunnion Ball Valve

Size: 4~40"(DN100~DN1000)
Rating: 150LB~900LB (PN16 ~ PN150)
Connection: RF, RTJ, FF, FM
Working Temperature:-46~425ºC
Seat: PTFE, RPTFE, NYLON, MOLON, PEEK, DEVLON, POM, PCTFE, PPL,
STL NI60, STL NI55, STL20#, STL6, WC, TCC
Material: A105, LF2, F304, F316, F316L, F304L, F321, F51, F53, F55, F60, F6a, 20 Alloy,
C61900, C63200, C83600, C37700, Inconel625, Inconel825, Monel400, Monel500, H.C-276ect.
Standard: API 602, BS5352, ANSI B16.34
Connection end: Flange end conform to ANSI B16.5;JB79
Test and inspection: API 598

In order to meet different needs of customers, we provide two series of ball valves, full bore and reduced bore ball valves.

The channel inner diameter of full bore ball valves is consistent with the inner diameter of pipeline, which can not only minimize the fluid resistance but also facilitate pipeline cleaning. The fluid resistance of necked bore ball valves is much less than that of the globe valve with the same caliber while its weight is 30% lighter than ball valves with the same caliber. As a result, it can effectively reduce both the production cost and price, and is relatively widely used.
We welcome all the world customers to contact us for more cooperation.