Check valve also known as the reflux valve, check valve, back pressure valves, one-way valve. This type of valve on the pipeline media itself the flow generated by a force which open and close automatically, belonging to an automatic valve. Check valve for pipeline system, its main function is to prevent the return of the media, to prevent the pump and driving motors reversing, and container medium discharge. Check valve also can be used to give the pressure is higher than main system auxiliary system for supplying pipeline.

Nominal pressure and pressure level: PN1.0-16.0MPa, ANSI CLASS150-900, JIS10-20K

Nominal diameter or diameter: DN15 ～ 900, NPS1/4 36

Connection: flange, welding, threaded, socket welding etc.

Application of temperature: -196 ℃ ~ 540 ℃

Body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8(304), CF3(304L ), CF8M (316), CF3M (316L, Ti ). The choice of different materials, are suitable for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.