1) Standards: API 609, MSS-SP-68 ,ANSI B16.34
a) Basic design: API 609
b) Test: API 598, BS 6755 MSS-SP-25
2) Size: 2" - 36"
3) Rating: 150LB-1500LB
4) Body materials: cast iron, ductile iron, cast steel, stainless steel
5) Operation: hand wheel, gear, motor, pneumatic operator
6) End connection: wafer, lug, double flange
7) Design features:
a) Concentric design
b) 2pc shaft low torque design
c) Bi-directional service
d) Self cleaning
e) Blow-out proof shaft
f) ISO5211 top flange