The detailed information of stainless steel check valves

Nominal pressure or pressure level: PN1.0-16.0 MPa, ANSI CLASS 150-900, JIS10-20 k or nominal diameter diameter: DN15 ~ 900, NPS 1/4 ~ 36 connection mode: flange, butt welding, thread, socket welding, etc. Applicable temperature: 196 ℃ ~ 540 ℃ the valve body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304 l), CF8M (316), CF3M, Ti (316 l). Choose different material, can be respectively suitable for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. This valve shall generally be installed in the pipeline.

The stainless steel check valves is belong to this type of valve, which includes swing check valve and lift check valve. Swing check valve with the humble hinge institutions, there is also a like the door of the disc is free to depend on the inclined surface of the seat. In order to ensure that each disc to seat the appropriate location, in valve design hinge agencies, in order to have enough plug valve kai xuan space, and the valve genuine and comprehensive engagement with the seat. All disc can be made from metal, can be embedded in the metal on leather, rubber, or synthetic coverage, depending on the use of performance requirements.

Swing check valve in the fully open conditions, almost unimpeded fluid pressure, so the pressure drop across the valve is relatively small. Lift check valve is located in the body of the valve seat valve seal surface. In addition to this check valve can be freely valve movements, like the rest of the cut-off valve, fluid pressure from the valve seat valve seal surface lift, medium return led to the disc back to seat, and cut off the flow. 

According to the conditions of use, valve can be all-metal structure, can be embedded in the disc on the shelf rubber mat or rubber ring form. As cut-off valve, fluid lifting of check valve through the channel is narrow, so that the lift check valve through the pressure drop than the swing check valve is big, and swing check valves are very few restrictions.