Specifications:
A) Standard compliance:
1) Flange butterfly valves: MSS SP - 67
2) Wafer butterfly valves: MSS SP - 68 or API 609
3) Face to face dimensions: ANSI B16.10, MSS SP - 67, and MSS SP - 68
Or 609
4) Test: API 598
5) End flange dimensions:
) NPS 1 1 / 2-24: ANSI B16.5
) NPS 30 - 72: MS SP - 44 or API 605
B) Type of construction:
1) Flange butterfly valves (hard and soft )
2) Wafer butterfly valves (hard and soft )
C) Type of connection:
1) RF and RTJ flange ends to ANSI B16.5 or API 605 and MSS SP - 44
Standard
D) Type of operation:
1) Lever
2) Worm gear, electric, or pneumatic actuator