Flanged Trunnion Mounted Ball valves A105 Body CL300 8’’x6’’ Metal to Metal Seat

Trunnion Mounted Ball Valve CL300 8’’x6’’ A105 Body metal to metal seat 

Data Sheet

Three piece construction;

Side entry;

Thick forged body and bonnet.

We used A193 B7/A194 2H to connect the body and bonnet. Our bolts are all whole thread, which is with firm tensile strength. not like some defective bolts with non-thread in the middle as used by some small factories.

When the valve is closed and the middle cavity is emptied through the discharge valve, the upstream and downstream seats will independently block the fluid at the inlet and outlet to realize double block function.Another function of the discharge device is that the valve seat can be checked if there is any leakage during the test. ln addition, the dirties inside the body can be washed and discharged through the drain device to reduce damage to the seat by impurities in the medium.

This ball valves is designed with sealant injection device on stem and seat. When the seat ring or stem O ring is damaged due to accident, the corresponding sealant can be injected by the sealant injection device to avoid medium leakage on seat ring and stem. If necessary, the auxiliary sealing system can be used for washing and lubricating the seat to maintain its cleanliness.

This ball valve is metal to metal designed. Both seat and ball is metal surfaced with Nickel specially for wearing. That is seat material is SS304+Ni55， and ball material is SS304+Ni60. Its design is for high temperature and naturally fire-proof， not like plastic seat that may be metal or damaged easily while fire happens.  More，we also often use other types of metal powder like stellite（STL） and Tungsten Carbide（TCC）as better choice for customers.

This ball valve is provided with the anti-static structure and adopts the static electricity discharge device to directly form a static channel between the ball and body or form a static channel between the ball and body through the stem, so as to discharge the static electricity produced due to friction during the opening and closing of ball and seat through the pipeline，avoiding fire or explosion that may be caused by static spark and ensuring system safety.

This trunnion pipeline ball valve adopts the trunnion ball structure, so as to achieve lower torque under operating pressure.

Trunnion mounted ball valve is a new generation of high performance ball valve. It is labor-saving operation：ball is supported by upper and lower stems to reduce friction and eliminate the formation of the ball and the sealing seat driven by the inlet pressure to prevent excessive torque due to huge sealing load.

Our stem adopts the blow-out proof structure.The stem is designed with the footstep at its bottom so that with the positioning of upper end cover and screw, the stem will not be blown out by the medium even in case of abnormal pressure rise in the valve cavity.