Safety valve painting requirements
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What color paint should be applied to the exterior of the safety valves we repair?
Most of them are painted silver.
Depending on the medium, it is best to refer to the relevant standards for valve coloring
This post was last edited by flute6 on 2009-10-12 at 13:32. GB12220 – General symbols for valves and marking on valves: The outer surface of valves should be painted before leaving the factory; the paint layer must be durable and of high quality, ensuring that the symbols are clearly visible. 1. Valve products are identified and painted according to the material of their valve bodies, with colors as follows: Valve body material: Gray cast iron, malleable cast iron, ductile iron, carbon steel, acid-resistant steel, stainless steel, alloy steel; Identification paint color: Black, silver, medium gray, sky blue, medium blue. Note: Acid-resistant steel and stainless steel may not require painting, and copper alloys also do not require painting.
4# flute6: Is the safety valve also painted in this way?
Our safety valves seem to differ greatly from those specified for the 4th floor. I don’t have any knowledge in this area, nor do I know what kind of paint is used in our factory; generally, the color of the safety valves is maintained as it was when they arrived. For example, the safety valves on the coking unit’s oil and gas lines, as well as the oil drainage safety valves, are blue (they are bright blue right from the moment they are purchased), while the rest are usually silver-white. There’s a small stainless-steel safety valve on the hydrogen and liquid ammonia storage tanks, and it’s in its natural color – without any paint applied to it at all.