详细说明
1) Standard compliance:
a) Design and manufacture: API 6D, API 608, ANSI B16, or BS 5351
b) Face to face dimensions: ANSI B16
c) End flange dimensions: ANSI B16
d) Test: API 6D or API 598
2) Type of connection:
a) RF and RTJ flange ends to ANSI B16 standard
b) BW flange ends to ANSI B16 standard
3) Type of operation:
a) Connection dimension of worm gear actuator, electric actuator, pneumatic actuator to ISO 5211 standard
b) Anti-static construction "AS" and fire-resistant construction "FD"
