Basic knowledge of marine valves

Marine valves are equipment used to control the pressure, flow and flow direction of fluids in marine pipelines in order to meet the environmental conditions of ships. A valve is a control device for a fluid pipeline. Its basic function is to connect or cut off the flow of the pipeline medium, change the flow of the medium, change the flow direction of the medium, adjust the pressure and flow of the medium, and protect the normal operation of the pipeline equipment.

Since the 1970s, ball valves and butterfly valves, which have the advantages of light weight, small size, good sealing performance, and rapid and convenient opening and closing, have gradually been used on ships and will increasingly replace stop valves and gate valves. Improve the performance of the ship. Electric gate valves, electric shut-off valves, electric sea valves, electro-hydraulic ball valves, electro-hydraulic butterfly valves, pneumatic butterfly valves and other remote control valves have also been gradually adopted by some ship systems, and hydraulic valve remote control systems have begun to be applied, which has improved the modernization level of ships . The performance required by the ship’s systems requires special special valves, such as high-pressure butterfly valves, pilot-type full-open safety valves, seawater solenoid valves, high-pressure electro-hydraulic ball valves, rotary hydraulic gate valves, special pressure reducing valves, and temperature regulating valves , High-pressure air solenoid valves, large-displacement traps, Tongfeng butterfly valves, etc., can also be developed by themselves for use on ships.