Check Valves

Hawa Valves has extensive experience in manufacturing Piston, Swing, Tilting Disc and Non-Slam Check Valves for use in the hydrocarbon, energy and process industries.

Size: ½” up to 56“ (DN 15 up to DN 1400)

Pressure Rating: ASME 150# to 2500#

Materials: Carbon Steels, Low Temperature Carbon Steel, Martensitic Steels, Austenitic Stainless Steel, Duplex Stainless Steels, Super Duplex Stainless Steels, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconnel, Titanium Alloy & Carbon Steel with Internal Corrosion Resistant Alloy (CRA) Overlay

Design Standard: API 602, API 6D, MESC SPE 77 / 132, BS 1868, DIN 3356, ISO15761

Pressure / Temperature Rating: ASME B 16.34

Test (Inspection) Standard: API 598, API 6D, MESC 77/132, ISO 5208, ISO15848-1&2, Bs6364

Construction Details: Bolted Cover / Pressure Seal Bonnet, Lift Check Type, Swing Check, Piston Check, Tilting Disc, Non – Slam Check

End Connection: Screwed, Socket Weld, Flanged, Hub End, Butt-Weld

Operator / Actuator : Lever, Gear, Actuator (Pneumatic, Hydraulic, Electro-Hydraulic and Electric Motorised)

Check Valves are available in six different types:
• Swing Type Bolted Bonnet
• Piston type check valves
• Non-Slam Check Valves
• Tilting Disc type Pressure Seal Bonnet
• Nozzle type

Cryogenic Service
Almost all HAWA Check Valve can be designed in a special version suitable for cryogenic service. In this case, all the materials and technical features are designed to withstand minimum design temperature required by the Customer, down to Cryogenic -196°C. If required by the customer, specific Cryogenic Tests are performed to verify the behaviour of valves sealing capability, emissions vs the ambient.