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Check Valves

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Gate Valves - Bolted Bonnet

Size 2" to 48" (50 mm to 1200 mm)
ASME Class Class 150 to 2500
Design Standard BS 1868, API 594, ASME B 16.34

Beyond Standards:

  • Check Valve design complies to BS 1868 and API 594
  • Offered with API monogram
  • Fugitive Emissions - Complies with ISO 15848-1 (<50 ppm)
  • Compliance to Annex III Module H of Pressure Equipment Directive 2014/68/EU
  • Check valves successfully tested to Shell 77/300 and witnessed by Shell Inspectors

Features that Add Value:

  • Internal hinge design, no hole in the body, eliminates leakage path
  • Inconel overlay/ cladded option available

Versatile Solutions:

  • Swing check valves offered with damper arrangement for non-slam applications
  • Options: Tilting Disc Check Valve, Axial Flow Check Valve, Stop Check Valve, Lift Check Valve, Steam Jacketed and FBE/Fusion-bonded Epoxy Lined Valves
  • ValvTrac™ RFID tags for reliable digital traceability

Stainless Steel Corrosion-Resistant Check Valves

Special Features:

  • Integral body seat. In-situ hardfacing provided for Trim 12 and 16 valves
  • Internal hinge design eliminates additional leakage path
  • Body-bonnet Joint - Class 150 Check Valves offered with square-shaped body-bonnet
    joints in size 2” and with ovalshaped joints in 3” size. Valves in all other sizes and pressure classes offered with circular body-bonnet joints.

Tilting Disc Check Valves

  • The disc has a pivot axis closer to the flow-bore centre-line compared with Swing
    Check Valves.
  • Disc seats against a conical surface on the seat ring
  • Suitable for pulsating flow and fluid with particulates
  • Low susceptibility to water hammer

Axial Flow Check Valves

Flow forces the disc open against spring force; when the flow is reversed, the spring quickly close the valve by forcing the disc against a seat

Axial Flow Check Valve offers lower pressure drop, lower reverse flows and low slamming

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