Fully Welded Body Trunnion Mounted Ball Valve

Fully Welded Body Trunnion Mounted Ball Valve


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Product Detail


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GMK fully welded ball valves are especially designed for gas transportation and storage industries. The fully welded body design can prevent any potential external leakage from connection of body and bonnet. In addition, the forged body with the advantages of consistent grain size and even thickness. Thus it inherently eliminates the conventional casted valve material defects, such as: shrinkage, porosity.


Product Range

-Valve size: 


-Pressure range:


Working temperature: -60℃~ 500℃

Body material: low-temperature carbon steel, carbon steel

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


Technical Specifications

Design standard: ASME B16.34/API 6D/BS 5351

Face to face standard: ASME B16.10

Flange ends: ASME B16.5ASME B16.47

Fire safe design: API 607API 6FA

Pressure test: API 6DAPI 598 


Design Features

Simple structure with good tightness and small torque;

With a fully-welded valve body, full bore and the minimum flow resistance (zero actually);

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

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

Be able to be used for underground installation without corrosion of interior parts, therefore, it is the best application for petroleum and natural gas lines;

Service life up to 30 years.



Long distance pipe lines for petroleum, chemical industry, metallurgy, light industry, power station, urban construction water supply, as well as oil, gas and natural gas transmission and so on

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