The check valve is installed in the piping system, its main function is to prevent the backflow of the media, check valve is an automatic valve which relies on the medium pressure to open and close. The Clamp check valve is suitable for the nominal pressure PN1.0mpa~42.0MPa, class150~25000, nominal path dn15~1200mm, nps1/2~48, operating temperature -196~540℃ tubes, used to prevent backflow of the media. Through the selection of different materials, can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and uric acid and other media.
There are carbon steel, low-temperature steel, dual-phase steel (F51/F55), titanium alloy, aluminum bronze, due to the nickel (INCONEL), SS304, ss304l, SS316, ss316l, CR-Mo Steel, Monel (400/500), $number alloy, ha alloy and other metal materials.Butterfly Valve
Standard and specification for clamp check valves: 1, design and manufacture: API594, jb/t8937, $literal, 2, structure length: API594, DIN3202, jb/t8937, Ansi/asme B16.10, 3, pressure, temperature level: ANSI B16.34, DIN2401, gb/t9124, HG20604, HG20625, SH3406, JB/T74, 4, Test and test: API598, jb/t9092, gb/t13927, 5, piping flange: jb/t74~90, gb/t9112-9124, hg20592~20635, SH3406, ansi/asme B 16.5, din2543-2548, gb/t13402, ASMEB16.47.Butterfly Valve
The function of check valve in water supply system is to prevent the impact of high pressure water backflow on the pump impeller. System in operation for some reason, when the pump suddenly stopped running, the pump pressure disappeared, and the pump outlet connected high-pressure water will reverse flow back to the pump. When the pump outlet is fitted with a check valve, it closes immediately to prevent high pressure water from reverse flow back to the pump.Butterfly Valve