Body material gray cast iron, ductile iron cast iron carbon steel acid-resistant steel, stainless steel alloy steel
Identification Paint Color Black Silver Medium Gray Blue Medium Blue
Note: (1) acid-resistant steel, stainless steel is not painted
(2) copper alloy is not painted
2, in order to represent the valve sealing surface material, should be in the transmission hand wheel, handle, wrench identification paint, the color according to the provisions of the table.
Sealing surface material Copper alloy Babbitt acid Steel Stainless steel Nitride steel Boron carbide Carbide Monel alloy Plastic rubber Cast iron
Identify paint colors red light yellow sky blue sky blue sky blue dark yellow magenta middle green black
Note: (1) seat and the opening and closing pieces of sealing surface material is not the same, according to the low hardness material coloring.
(2) check valve, coated on the top of the bonnet: safety valve, pressure reducing valve, trap coated on the valve cover or bonnet.
3, the transmission paint color, according to the following provisions:
(1) electric device: common type coated in gray, triple ( outdoor , explosion-proof, anti-corrosion ) painted blue.
(2) Pneumatic, hydraulic, gear drive and other transmission mechanism, with the product coloring.