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Check Valves
Check valves are used to prevent medium backflow by automatically opening and closing of the discs. Check valves are mainly used in one-way pipelines, allowing only one direction of media flow to prevent accidents.
Check valves can be divided into four types according to the movement mode of the disc: Swing Check Valve, Lift Check Valve, Nozzle Check Valve, Dual Plate Check Valve
- Swing Check Valve H44
- Pressure Seal Check Valve H44
- Dual Plate check valve H76
- Nozzle Check Valve GLH41
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Design Features
- Lift check, swing check, dual plate
- Full bore or reduced bore
- Bolted bonnet or self-sealing bonnet
- Replaceable seat or integral seat
- Conical disc and flat faced disc
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Specification
Design standard: API, ASME, EN, ISO, JIS, DIN, BS, GB
Pressure rating: CLASS 150LB~2500LB, 1.0MPa~42.0MPa, JIS 10K~40K
Size range: NPS1/2” ~60”, DN15~DN1500
Standard connections: flange, wafer, threaded, butt weld, socket weld
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Pressure: 150LB
Size: 1-1/2”
Material: 904L
Standard connection: Flange RF
Applications: smelting
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Pressure: 150LB
Size: 4”
Material: titanium Gr.2
Standard connection: Wafer
Applications: terephthalic acid PTA
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Pressure: 150LB
Size: 4”
Material: CW6M
Standard connection: Flange RF
Applications: acetic acid transportation, alkylate
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Pressure: 600LB
Size: 1/2”
Material: Zirconium 705
Standard connection: Flange RF
Applications: acetic acid transportation
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Pressure: 900LB
Size: 4”
Material: CW12MW
Standard connection: Flange RTJ
Applications: cyclohexanone and caprolactam transportation
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Pressure: 150LB
Size: 12”
Material: duplex stainless steel 4A
Standard connection: Wafer
Applications: seawater desalination
