The stop-check valve is a multi-purpose valve with both stop valve and check valve functions. Its structure is similar to that of the stop valve, but the valve rod and the valve disc are not fixed. When the valve rod falls and presses the valve disc tightly on the valve seat, it acts as a stop valve; When the valve stem rises, it acts as a check valve. The use of stop check valve can save the installation cost and space position on the pipeline where the stop valve (or gate valve) and check valve need to be installed at the same time (such as the outlet end of the water pump), or in the place where the installation position is restricted (such as the ship).

Structure:

The inside of the globe valve adopts a bellows structure, and the lower end of the stainless steel bellows is welded on the valve stem to prevent the process fluid from eroding the valve stem. The other end is placed between the valve body and the valve cover to form a static seal. Double seal design, if the bellows fails, the stem packing will also avoid leakage. The bellows is welded to the valve stem to maintain stable running performance and avoid the valve stem vibration caused by the vibration of the valve plug. Applicable to pipelines of steam, flammable, explosive, heat transfer oil, high purity, toxic and other media.

Specifications: