Pneumatic trunnion ball valve working principle
Pneumatic trunnion ball valve opening and closing parts are trunnion mounted ball, rotating 90 degrees to open or close, generally for flange connection, and the ball is fixed, using the upper and lower stem to fix the spool (shaft support) and movable sealing seat design.When closed, the ball will not produce displacement under the action of medium pressure, and the cultivation is more stable. Pneumatic trunnion ball valve is often used in various pipelines with high pressure and large diameter. Pneumatic trunnion ball valve is usually connected with the ball on the upper and lower shaft, with rolling bearings or sliding bearings, in order to reduce the opening and closing of the shaft journal friction, reduce operating torque, in various industries have been widely used.

Pneumatic trunnion ball valve structure


Pneumatic trunnion ball valve application:
Most pneumatic trunnion ball valve with flange connection, suitable for long distance pipeline and general industrial pipeline, its strength, security, and resistance to bad environment, special consideration when the design is used to truncate or on line in the medium, choose different material, can be respectively suitable for water, steam, oil, liquefied petroleum gas, natural gas, coal gas, nitric acid, acetic acid, oxidizing medium, a variety of media such as urea,pneumatic trunnion ball valve is widely used in petroleum chemical industry such as power and water conservancy.
Valve type: Q647F, Q647H
Size: DN50 ~ DN500
Construction: two - section cast valve body
Body material: Cast steel (WCB), stainless steel (304, 316, 316L)
Nominal pressure: PN16, 25, 40, 64bar
Applicable temperature: -40℃ -425 ℃
Application: petrochemical, gas equipment, electric equipment, environmental protection water treatment
Product features: Can be used in high pressure and large diameter of all kinds of pipeline