Check Valves
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Check 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-bonnetjoints 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 SwingCheck 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
