Main advantages: 1. German standard lifting check valve is an automatic sealing valve. The valve automatically opens and closes the disc depending on the flow of the medium itself, effectively preventing the backflow of the medium; 2. Disc with stainless steel spring device, the valve can be installed horizontally or vertically; 3. Surfacing welding CO hard alloy on the sealing surface, featuring wear resistance, corrosion resistance, friction resistance and long service life; 4. Reasonable product structure, reliable sealing, excellent performance, beautiful appearance; Application: hot oil system, steam system, cold and hot water system. Applicable temperature: -20鈩儈350鈩?Applicable nominal pressure: PN1.6~ 4.0mpa Swing checks are a simple design using a disc attached to an arm that is hinged at the top of the valve (at the 12 o'clock position). Reverse flow and gravity assist the valve in closing. Swing checks can be used for most media and generally provide good flow capacity. They range in size from 1/2 inch and smaller to 50 inches and larger, and are available with threaded, socket weld, flanged, or butt weld end connections. Swing checks are typically easy to inspect and maintain. In most cases, repairs can be performed with the valve in the line. Because of their design, swing checks are not fast-closing valves due to the travel distance from full open to close.Customized Check Valve website:http://www.jl-valves.com/check-valve/