1) General purpose valve (general purpose valve): a general term for a wide range of valves, also known as ordinary valves. It is not a valve for a specific condition and a specific purpose.
Although there is no clear definition of general valves, it mainly refers to the pressure below 2MPa, manually operated globe valves, gate valves, check valves, butterfly valves and ball valves, and the valve housing materials mainly include gray cast iron, ductile iron, malleable cast iron, carbon steel, stainless steel and bronze.
2) Stainless steel valve: The valve body and bonnet material of the pressure housing are made of stainless steel.
3) Bronze valve: The valve body and bonnet material of the pressure housing are made of bronze. And most of the bronze valves are flange connection and threaded connection valves with nominal pressure below 20K and nominal diameter below 100.
4) Cast Iron Valve: A valve made of cast iron for the body and bonnet material of the pressure housing.
5) Cast Steel Valve: The valve body and bonnet material of the pressure housing are made of carbon steel and low-alloy steel castings.
6) Plastic valve: also known as plastic valve. It is a valve made of rigid polyethylene, chlorinated polyvinyl chloride and other materials. Although these valves have excellent corrosion resistance, they are limited to use at ambient and low pressures.
7) Ceramic valve: The main parts are valves made of ceramic. It has good corrosion resistance and wear resistance, but the influence of mechanical shock and thermal shock on this valve needs to be considered when using.
8) Brass Valve: The body and bonnet material of the pressure housing are made of brass. Brass valves are relatively small caliber valves that are stocked, cast, and forged.
9) Forged valve: The forming method of the valve body and valve cover is a valve manufactured by open forging or die forging process. Forged valves are generally made of brass, carbon steel, alloy steel, stainless steel and other materials, and most of them are valves with relatively small diameters.
10) Snap tap, ferule: The faucet used when branching out in the water supply pipe.
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