What’s Trunnion mounted ball valves?

The 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 ball valve means that the ball is constrained by bearings and is only allowed to rotate, the majority of the hydraulic load is supported by the System constraints, resulting in low bearing pressure and no shaft fatigue.

Advantages of trunnion ball design is the lower operating torque, ease of operation, minimized seat wear (Stem/ball isolation prevents side loading and wear of downstream seats improving performance and service life), superior sealing performance at both high and low pressure (a separate spring mechanism and upstream line pressure is used as the sealing against the stationary ball for low pressure and high pressure applications).

The pipeline pressure drives the upstream seat against the stationary ball so that the line pressure forces the upstream seat onto the ball causing 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. The trunnion is available for all sizes and for all pressure classes but they are mainly for large sizes and high pressure conditions

Main features of NORTECH Trunnion mounted ball valves

Trunnion Ball Valve  is used to cut off or connect the media in various of Class150~Class2500. The valves made of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, oxidizer, urea and etc.

The driving modes include manual operation and electric operation. The connection ends can be flange or butt welding.

Specifications of NORTECH Trunnion mounted ball valves

What is Trunnion Ball Valve ?

Trunnion Ball Valve  is used to cut off or connect the media in various of Class150~Class2500. The valves made of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, oxidizer, urea and etc.

The driving modes include manual operation and electric operation. The connection ends can be flange or butt welding.

Trunnion Ball Valve Technical Specifications

Our advantages of Trunnion Ball Valve

• ISO 5211 mounting pad compatible for various type of actuators;

• simple structure,reliable sealing and easy maintenance.

• anti-static and fire safe design.

• ATEX certification for explosion proof.

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Application of NORTECH Trunnion mounted ball valves

This kind of Trunnion Ball Valve  is widely utilized in the exploiting, refining and transporting system of oil, gas and mineral. It can be also utilized to produce chemical products, medicine; production system of hydroelectricity, thermal power and nuclear power; draining system,

Trunnion Ball Valve  is used to cut off or connect the media in various of Class150~Class2500. The valves made of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, oxidizer, urea and etc.

The driving modes include manual operation and electric operation. The connection ends can be flange or butt welding.

heating system and gas system in cities or industries.