This product is a new type top entry combination ball valve,the seat can be installed and move around the body.Through the thread,the outer margin of the seat connected to the retainer ring.There is spring on the support cover which installed on the valve body,and the retainer ring can compress spring.The fabrication holes are on the outer margin of the seat and the retainer ring.This new type product adopts total body design.The compensation can be automatically,the possibility of leakage is small,safety in use,vibrate resistance,and double seal.The ball is installed from the top part,so can finish the maintenance without removing the pipe.It is very convenient.
