Forged Steel Check Valves - SIO
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Forged Steel Check Valves


  • Swing Type or Lift (Piston) Type
  • SW, NPT, or BW ,Flange connections
  • Bolted cover, Welded Cover or Pressure seal cover


NPS 1/4 to NPS 3


150 to 2500

Design & manufacture:

API 602

ASME B16.34

End Connection:

ASME B16.11 (SW)

ASME B1.20.1 (NPT)

ASME B16.5 (RF, RTJ)

Test & inspection:

API 598


MR-0175, MR-0103

ISO 15848, API 624

Available in:

Forged (A105, LF2, F5, F11, F22, A182 F304 (L), F316 (L),

F347, F321, F51), Alloy 20, Monel, Inconel, Hastelloy

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