• Model Number: Q47F
• Brand Name: CXDLV
• Place of Origin: Zhejiang, China
• Minimum Order Quantity: 1
• Supply Capacity: 500Pcs/Mon/month
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Q47F DIN3357 Trunnion Ball Valve Mounted Carbon Steel Ith Gear Operation Description

The trunnion ball valve is a form of quarter-turn valve which uses a hollow, perforated and fixed/supported ball to control flow through it.

A trunnion mounted valve means that the ball is constrained by bearings and is only allowed to rotate, the majority of the hydraulic load to be supported by the System constraints, resulting in low bearing pressure and no shaft fatigue. The line pressure drives the upstream seat against the stationary ball so that the line pressure forces the upstream seat onto the ball to cause it to seal.

The mechanical anchoring of the ball absorbs the thrust from the line pressure, preventing excess friction between the ball and seats, so even at full rated working pressure operating torque remains low. This is particularly advantageous when the ball valve is actuated because it reduces the size of the actuator and hence the overall costs of the valve actuation package.