How to discern the valve material from the color of paint

Valve identification Painting the valve surface should be painted factory, the paint layer should be durable, the United States and ensure that the mark was clearly clear. 1, the valve products according to the body material to identify the paint, the color is as follows Body material Gray iron Malleable iron Ductile iron Carbon steel Acid-resistant steel Stainless steel Alloy steel Identification Paint color Black Silver Gray Sky Blue Blue Note: Acid-resistant steel, Stainless steel is not painted, 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 pasteurized steel acid-resistant steel stainless steel nitrided steel boron steel hardened alloy Monel plastic rubber cast iron identification paint color red light yellow sky blue sky blue sky blue dark yellow fuchsia green black Note: (1) Seat and 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, 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. (Note: Please refer to GB12220 common valve logo and valve identification paint)

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