Founded in 1994, China JingPin machine Co., Ltd. is vacuum valve manufacturer and supplier. Our custom vacuum valves meet ANSI, API, DIN, BS, JIS and GB Standard. Our products are mainly made by these materials such as WCB, WC1, WC6, WC9, ZGCr5Mo, ZG15Cr1Mo1V, CF8, CF8M, CF3, CF3M, 12CrMoV, ZG1Cr18Ni9Ti, and ZG1Cr18Ni12Mo2Ti, etc. and passed the AZ certification of State Technology Supervision Bureau, and CE certification of EEC, Pressure Equipment PED, and API certification of the USA.

Vacuum/Pressure Relief Valve, MNPT Inlet 3/8 In, Flow Capacity 0-15 CFM, Pressure Range 0 to 20 PSI, Vacuum Range 0 to 30 Inches Hg, Max Temp 250 F, Brass Body Material, Nylon Poppet, Nitrile Seal Material, Stainless Steel Spring Material, Hex 11/16 In, Length 2 In, Easily Convert from Vacuum to Pressure Relief by Reversing Poppet and Spring. The bypass valve creates a small opening for the initial pump down, slowing system evacuation. This reduces contamination induced by particle turbulence and damage due to sudden pressure changes. The angle or inline valves are available in port sizes from NW 25- NW 100 (1" -4"), in Standard or Low Profile styles.

The vacuum valve is a patented safety valve that protects a vacuum system in the event of a power failure by isolating the vacuum system and venting the pump. This avoids oil or particle backup and allows the pump to restart easily. This reduces contamination induced by particle turbulence and damage due to sudden pressure changes. The angle or inline valves are available in port sizes from NW 25- NW 100 (1" -4"), in Standard or Low Profile styles. The single stage, bellows-sealed poppet vacuum valves range in port size from NW16 to NW 160 (3/4" to 6"). The line includes standard, low profile or metal-sealed styles in angle or inline configuration. Manual, pneumatic or electropneumatic actuation and a wide variety of flanging is also available.