Features:
1) check valves conform to ASME B16.34
2) Each tested according to API 589, and marking is per MSS SP-25
3) Three bonnet designs:
a) Bolted
b) Welded
c) Pressure seal
4) Three different design configurations:
a) Piston check
b) Ball check
c) Swing check
5) Working pressure: PN1.0 - 42.0MPa, Class 150 - 2,500lbs
6) Diameter: DN15 - 1,200mm, NPS1/2 - 48
7) Working temperature: 196 - 540°C
8) Medium: water, steam, oil

Inner packing: plastic bag

Outer packing: polywood cases