The temperature of the valve is determined by the material used to make the valve. Valve materials commonly used temperature is as follows:
valve
Operating temperature
Gray cast iron valve
-15 ~ 250 ℃
Malleable cast iron valve
-15 ~ 250 ℃
Ductile iron valve
-30 ~ 350 ℃
High nickel cast iron valve
The maximum temperature is 400 ℃
Carbon steel valve
-29 ~ 450 ℃, recommended in the JB / T3595-93 standard temperature t
1Cr5Mo, alloy steel valve
The maximum temperature is 550 ℃
12Cr1MoVA, alloy steel valve
The maximum temperature is 570 ℃
1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti stainless steel valve
-196 ~ 600 ℃
Copper alloy valve
-273 ~ 250 ℃
Plastic valve (nylon)
The maximum temperature of 100 ℃
Plastic valve (chlorinated polyether)
The maximum temperature of 100 ℃
Plastic valve (PVC)
The maximum temperature of 60 ℃
Plastic valve (poly chlorotrifluoroethylene)
-60 ~ 120 ℃
Plastic valve (Teflon)
-180 ~ 150 ℃
Plastic valve (natural rubber diaphragm valve)
The maximum temperature of 60 ℃
Plastic valve (nitrile rubber, neoprene diaphragm valve)
The maximum temperature of 80 ℃
Plastic valve (Viton diaphragm valve)
The maximum temperature of 200 ℃
Valve lining with rubber, plastic, to rubber, plastic temperature resistance shall prevail.
Ceramic valve, because of its acute temperature degeneration is poor, generally used for working conditions below 150 ℃. Recently there is a super-performance ceramic valve, capable of high temperatures below 1000 ℃.
Glass valve. Temperature rapid degeneration, generally used below 90 ℃ working conditions.
Enamel valves, temperature resistance by the seal material restrictions, the maximum temperature does not exceed 150 ℃.
Valve body materials are: C carbon steel, I 1Cr5Mo chromium molybdenum steel, H Cr13 stainless steel, K malleable iron, L aluminum alloy, P 0Cr18Ni9 stainless steel, PL 00Cr19Ni10 stainless steel, Q ductile iron, R 0Cr12Ni12Mo2 stainless steel, RL 00Cr17Ni14Mo2 Stainless steel, S plastic, T copper and copper alloy, Ti titanium and titanium alloy, V chromium molybdenum vanadium steel, Z gray iron.
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