Definition of valves

Valve is the control part of the fluid conveying system, with cut-off, adjustment, diversion, prevent countercurrent, pressure regulator, shunt or overflow pressure relief and other functions.

Valves for fluid control systems range in variety and size from simple globe valves to those used in extremely complex automatic control systems. Valves can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media and other types of fluids. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chromium-molybdenum steel valves, chromium-molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, non-standard valves, etc.

Definition: a device used to control the direction, pressure and flow of a fluid in a fluid system. The valve is the device that enables the medium (liquid, gas, powder) in the pipe and equipment to flow or stop and control its flow. Valves can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media and other types of fluids.

The valve is the control part of the pipeline fluid conveying system. It is used to change the path section and the direction of medium flow. It has the functions of diversion, cut-off, throttling, check, shunt or overflow pressure relief. Valves for fluid control range from simple globe valves to those used in extremely complex automatic control systems, with a wide variety of types and specifications, ranging in nominal sizes from extremely small instrument valves to industrial pipeline valves of up to 10m.

Valve can be used to control the flow of water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactive fluid and other types of fluid, valve working pressure from 0.0013mpa to 1000MPa high pressure, working temperature from -269℃ ultra-low temperature to 1430℃ high temperature. Valve control can use a variety of transmission mode, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic, electromagnetic hydraulic, electric hydraulic, pneumatic, spur gear, bevel gear drive, etc.; In pressure, temperature or other form under the action of sensor signals, action, according to the requirement of the reservation or not depend on the sensor signals for simple open or shut down, rely on the drive or automatic mechanism makes opening and closing valve for lifting, sliding, place or rotary movement, so as to change the size of the port in order to realize the control function.