Feature:
 Wafer or lug body style fit between FF or RF flanges. 
 PTFE bushing ensure the maximum shaft support and certralized alignment. 
 90 degree polished disc assures positive on-off 
 Edge-Boot Seat, it is new type in market .can reduce the torque also fit  various flanges, easy to replaceable. 
 Bubbles-tight sealing with no leakage under the pressure test.
 Universal ISO5211 mounting pad, which can be suitable for all kinds of actuators such as handles, gear box, electric 

actuator and pneumatic actuators 
 Round with key, square and double "D" of  Stem configuration are  for you selection. http://www.dongjin-valve.com