Top entry ball valve has a top entry structure, is mainly used in pipeline and industry system and it has a top entry and on line maintenance function. Its maintenance can be made on pipe line and without dismounting from the pipe line. The back space seat structure is adopted for the seat and the rear portion of seat retainer is oblique angle to prevent accumulation of impurity from affecting back space of seat.It has a lot of advantages, such as small fluid resistance, simple structure, small volume, light weight, reliable sealing, convenience for operation and maintenance, open and close quickly, as well as start and close flexibly.
Body Material:ASTM A216 WCB,WCC, A351 CF8,A351 CF8M,A217 WC6,WC9
Ball Material:ASTM A105ENP,A182 F304(L),A351 CF8(3),A182 F316,A351 CF8M,A351 CF3M
Driving: Manual/Electric/Worm Wheel/Pneumatic,etc
Design Std:API6D,ISO14313,ASME B16.34
Fire resistance design conforms with:API607,ISO10497
Inspection&Test conforms with:API6D,ISO5208,API598