The temperature of the valve is determined by the material used to make the valve. Valve temperature commonly used materials are as follows: Valve temperature gray iron valve -15 ~ 250 ℃ malleable iron valve -15 ~ 250 ℃ ductile iron valve -30 ~ 350 ℃ high nickel cast iron valve maximum temperature of 400 ℃ carbon steel valve -29 ~ 450 ℃, recommended temperature in JB / T3595-93 standard t 1Cr5Mo, alloy steel valve maximum temperature is 550 ℃ 12Cr1MoVA, alloy steel valve maximum temperature is 570 ℃ 1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti stainless steel valve -196 ~ 600 ℃ copper alloy valve -273 ~ 250 ℃ Plastic valve (nylon) Maximum temperature 100 ℃ Plastic valve (chlorinated polyether) Maximum temperature 100 ℃ Plastic valve (PVC) Maximum temperature 60 ℃ Plastic valve (polychlorotrifluoroethylene) 60 ~ 120 ℃ Plastic Valve (Teflon) -180 ~ 150 ℃ Plastic Valve (Natural Rubber Diaphragm Valve) Maximum Operating Temperature 60 ℃ Plastic Valve (NBR, Neoprene Diaphragm Valve) Maximum Operating Temperature 80 ℃ Plastic Valve (Viton diaphragm valve) The maximum temperature of 200 ℃ Valve lining with rubber, plastic, with rubber, plastic temperature resistance . 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 valves, temperature acute degeneration is poor, generally used for working conditions below 90 ℃. 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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