A marine valve is a kind of equipment used to control the pressure, flow rate and flow direction of the fluid in the pipeline to meet environmental conditions of vessels. The valve is the control device of fluid pipeline. Its basic function is to connect or cut off the flow of the medium, change the flow direction of the medium, adjust the pressure and flow rate of the medium to ensure the normal operation of pipes.

Principle: 
Depending on the pressure of the valve stem, the sealing surface of the disc and the sealing surface of the seat closely fit together to prevent the flow of the medium.

Advantages: 
1. Uncomplicated design, easy manufacture and maintenance.
2. The working stroke is small and the opening and closing time is short.
3. Good sealing performance, small friction between sealing surfaces and long service life.