Check Valves Video

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

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

Pressure: 150LB
Size: 1-1/2”
Material: 904L
Standard connection: Flange RF
Applications: smelting

Pressure: 150LB
Size: 4”
Material: titanium Gr.2
Standard connection: Wafer
Applications: terephthalic acid PTA

Pressure: 150LB
Size: 4”
Material: CW6M
Standard connection: Flange RF
Applications: acetic acid transportation, alkylate

Pressure: 600LB
Size: 1/2”
Material: Zirconium 705
Standard connection: Flange RF
Applications: acetic acid transportation

Pressure: 900LB
Size: 4”
Material: CW12MW
Standard connection: Flange RTJ
Applications: cyclohexanone and caprolactam transportation

Pressure: 150LB
Size: 12”
Material: duplex stainless steel 4A
Standard connection: Wafer
Applications: seawater desalination