DIN Check Valve

DIN Check Valve

Din check valve is a mechnical device, it normally allows fluid(liquid or gas) to flow through it in only one direction. They are used in a wide vatiety of applications,such as petroleum, gas, water, vacuum system, flue gas puerification plant, heating equipment, steam industry, power station etc under nominal pressure of PN1.6~PN4.0Mpa and working temperature of -20~425 degrees. Their function is to prevent reverse flow on a wide variety of fluids for applications in process lines, hot water systems, steam and condensate systems.

Check valves are two-port valves, it means that they have two openings in the body, one for fluid to enter and the other for fluid to leave. An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.

Generally speaking, din check valve consists of composite washer, body, disc, cover, nut and double-headed bolt. Different components have different types of materials. Main materials include wcb, low temperature steel, aluminum bronze, dual phase steel(F51F5), titanium alloy, inconel, hayne’s alloy, SS304, 304L, 316, 316L, chrome-molybdenum steel etc.