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2PC Cast Steel Trunnion Mounted Ball Valve

2PC Cast Steel Trunnion Mounted Ball Valve

2PC Cast steel trunnion mounted ball valve have two piece and three piece body structure.middle part is bolt connection, RPTFE seal insert into stainless steel ring with spring .keep good sealling . Top stem with bottom stem have PTFE bearing ,reduce friction, save effort. full bore and reduce...
Product Details

2PC Cast Steel Trunnion Mounted Ball Valve

With the improvement of technologies of valve, valve areas continuously expanding, the corresponding valves standard is more and more indispensable. Valve industry has entered a period of innovation, product categories require not only new replace, internal management of enterprises also need to be based on industry standards for further reform.


1.Opening process 

1)In the closed position, the sphere is pressed by the  machinery of the stem and pressed on the seat.

2)When the hand wheel is turned counterclockwise, the stem moves backwards, and its bottom angular plane removes the ball from the seat.

3)The valve stem continues to lift and interacts with the guide pin in the helical groove of the stem so that the ball begins to rotate without friction.

4)Until the full open position, the valve stem is raised to the limit position, and the sphere rotates to the full open position.

2.Close process

1)When closed, rotate the handwheel clockwise, the stem begins to drop and the sphere starts to rotate away from the seat.

2)To continue rotating the hand wheel, the stem is acted upon by the guide pin, which is embedded in its upper spiral groove, and the valve stem and the ball are rotated at the same time by 90 °.

3)The ball has been rotated by 90 ° with no contact with the valve seat when it is about to close.

4)In the last few turns of the handwheel, the angle plane at the bottom of the stem is mechanically wedged to press the sphere so that it is tightly pressed on the seat and completely sealed.


Size: 1/2 " - 32"

Pressure: 150LB - 900LB

Temperature: -29 °C - +545°C

Body Materials: WCB, A105, 304, 316, CF3, CF3M, CF8, CF8M
Trim: A105 + ENP, 13Cr, F304, F316
Operation: Lever, Gear, Pneumatic operator

Application: Refinery, Chemical, Petrochemical, Power plant, Pharmaceutical

Payment & Shipment 

Payment :30%T/T with order ,70% T/T before the shipment .

Package :carton case or wooden case .

Shipment :  25-45days after payment.

Shipping: by air ,by train mby sea .

Port :Ningbo,Shanghai .

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     Persisting in the principle of "QUALITY IS LIFE, CUSTOMER IS GOD", we will strive for high efficiency, passion and integrity to provide our customers with high-quality products and superior trade services.
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