On the Classification of Valves

This classification method is divided by principle, function and structure. It is the most commonly used classification method both at home and abroad. General gate valves, globe valves, throttle valves, instrument valves, plunger valves, diaphragm valves, cock valves, ball valves, butterfly valves, check valves, relief valves, safety valves, traps, control valves, bottom valves, filters, sewage valves, etc. Classification by use and function

Regulating Valves - Mainly used to regulate the flow and pressure of medium. Including control valves, throttle valves, pressure relief valves, etc.

Check Valves - Used to prevent medium backflow. Check valves with various structures are included.

Shunt Valve Class - Used for separating, distributing or mixing media. Including distribution valves and traps of various structures.

Safety Valves - Safety protection for medium overpressure. Includes various types of safety valves.

Interception Valves - Mainly used to cut off or connect media flow. Including gate valves, globe valves, diaphragm valves, ball valves, cock valves, disc valves, plunger valves, ball plug valves, needle instrument valves, etc.

Pressure classification

Vacuum Valve - Valve with working pressure below standard atmospheric pressure.

Low Pressure Valve - Valve with nominal pressure PN less than 1.6 MPa.

Medium Pressure Valve - Valve with nominal pressure PN 2.5-6.4 MPa.

High Pressure Valve - Valve with nominal pressure PN10.0-80.0 MPa.

Ultra High Pressure Valve - Valve with nominal pressure PN greater than 100 MPa.

Classification by medium temperature

High Temperature Valve - Valve with t greater than 450 C.

Medium Temperature Valve - Valve with temperature less than 120 t less than 450 C.

Normal Temperature Valve --- Valve whose temperature is less than 40 T and less than 120 C.

Low Temperature Valve - Valve with temperature less than 100 and t less than - 40.

Ultra-Low Temperature Valve - Valve with t less than - 100 C.

按阀体材料分类

Metal body lined valves: lead lined valves, plastic lined valves, enamel lined valves.

Non-metallic Valves - such as Ceramic Valves, FRP Valves, Plastic Valves

Metal material valves such as copper alloy valves, aluminium alloy valves, lead alloy valves, titanium alloy valves, Monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low alloy steel valves, high alloy steel valves.