DIN double disc check valve

 Type of connection:
a) RF and RTJ flange ends to ANSI B16.5 standard
b) BW flange ends to ANSI B16.25 standard

3) Type of operation:
a) Lever
b) Connection dimension of worm gear actuator, electric actuator, pneumatic actuator to ISO 5211 standard
c) Anti-static construction "AS" and fire-resistant construction "FD"