METAL SEATED FORGED TRUNNION BALL VALVE

Side Entry

forged ball valve,the forging material can ensure sufficient rigidity and strength under maximum 

rated operation pressure  without inherent flaw of cast. Enough wall thikness of separate body and 

adaptation of high strength tie bolts are convenient for valve maintenance and sufficient to bear the 

stress of pipe.The internal parts of valve are carefully designed and selected to ensure  reliability under 

all kinds of work condition.

When the trunnion ball valve be used normally,its sealed by seat and ball surface,seat retainer sealed 

by O-ring and body,this is soft sealed and reliable sealing.When the seat and O-ring are burnt,the seat 

retainer and body will be sealed by expanded graphite.Thus act anti-fire safe purpose.

In order to prevent friction among ball,stem and PTFE that generates static electricity which may light 

the combustibles and explosives that cause an accident,in this ball valve,static-conduction spring is set 

between the stem and the ball,the stem and the body.Thus static electricity is conducted to ground 

and system safety is secured.

The connective position of valve body and bonnet is double sealed by gasket and O-ring,on this base,

such factors as fire,high temperature,shock and uneven opening or closing of the torque all can't induce 

external leakage.

The self-lubricated bearings are installed at the friction of stem,resulting in wear resistance,fiexibility of 

operation and low torque.

When ball is full open or close position,the transmitter substance in center cavity of body can be released 

by drainage and emptying devices.In addition,the over loaded pressure in the center cavity of valve can be  

released to low pressure end by self relief seat.

Compound injection holes are designed and compound injection valves are installed at locations of stem/cap 

and body support of side valve.When sealing of stem or seat is damaged to induce leakage,the compound 

can be used to do the second time sealing.A concealed check valve is installed in side of each compound 

injection valve to prevent compound from out flowing due to the action of transmitter substance.The top 

of the compound injection valve is the connector for fast connection with compound injection gun.

For the underground installed valve,the stem can be lengthened and for the convenience of operation the 

corresponding compound injection nozzle and drainage valve can be extended to the top of valve.

When the body pressure going up un-normally as the unstable factor,the trunnion ball valve downstream 

seat will be pushed by unnormal pressure,and the release the un-normally pressure automatically,it doesn't 

damage to the sealing of upstream seat.

The top pad of valve designed according to ISO 5211,which is convenient for connection and exchange of 

various drivers.The common driving types are manual,electrical,pneumatic and pneumatic/hydraulic.

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the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.