China Brass Check Valve BRASS VERTICAL FILTER CHECK VALVE Brass Vertical FILTER Check valve is made by brass material and Stainless steel filter . Filter check valve refers to the check valve with filter function. Different from the general check valve, the front end combines a filter, so that it has the function of filter and check valve when the application, which is a new type of combination valve. The main function of the filter check valve is to prevent the backflow of the medium, to prevent the reversal of the pump and the drive motor, and to prevent the discharge of the vessel medium. Check valves can also be used to supply lines in which pressure may rise to exceed the auxiliary system pressure. Check valve can be mainly divided into rotary start type check valve (rotating according to the center of gravity) and lifting type check valve (moving along the axis). This type of valve functions to allow the medium to flow in only one direction, and to prevent it.