These are used as a backflow prevention of fluid. This type of check valve is suitable for installation between flanges. Closing is performed by the spring and the fluid back pressure.They are used in water treatment plants,chemical and power plants. They are produced in sizes DN10-DN200 and for pressure gardes up to PN 40 bar.
Ends of these check valves can be threaded, welded or hose. The housing is made of PEHD (high consistency polyethene) or PPHD (high consistency polypropylene). They are produced in sizes DN10-DN50 and for pressure grades up to PN16 bar. They are used in HCL plants.
These are used for technical gases, on high pressure pipelines, control panels, laboratories etc. The housling can be made of stainless steel, brass or carbon steel. Installed position of the check valves can be horizontal or vertical. Ends can be threaded or flanged. They are produced in sizes DN10-DN50 and for pressure grades up to PN16-PN300 bar.