How to identify the valve from the paint

2020-09-16 15:14:16

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For the paint layer, it is durable, beautiful and standardized, and the mark is clearly visible. The following will describe the painting of the various parts of the valve.

1. Identify the sealing surface material of the valve from the painting of the wrench, handwheel and handle.

Sealing surface material	Paint color
cast iron	black
rubber	Medium green
plastic	Fuchsia
Monel alloy	Dark yellow
Cemented carbide	sky blue
Nitrided steel boronized steel	sky blue
Babbitt alloy	Light yellow
Acid-resistant steel stainless steel	sky blue
Copper alloy	Big red

Note: (1) When the sealing material of the valve seat and the opening and closing parts are different, paint according to low hardness material (2) check valve and apply to the top of the valve cover: safety valve, pressure reducing valve, steam trap applied to the valve cover or Bonnet

Second, identify from the paint of the valve body

Body material	Paint color
Gray cast iron, malleable cast iron	black
Ductile iron	Silver
Carbon steel	Medium gray
Acid-resistant steel, stainless steel	sky blue
alloy steel	Medium blue

Note: Acid-resistant steel and stainless steel are allowed to be painted, and copper alloy is not painted.

Third, identify from the painting of the transmission

transmission	Paint color
Electric device	Ordinary type painted in gray, three-in-one (outdoor, explosion-proof, anti-corrosion) type finish blue
Pneumatic device	Consistent with the painted product

HUMIDIFIER

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