What nonmetallic materials are commonly used in valves? Shared by JIS Marine valve Supplier.
The rated temperature range of nitrile butadiene rubber seat is -18 ℃~100℃. Also known as NBR, NITRILE, or HYCAR. It is an excellent general-purpose rubber material suitable for water, gas, oil and grease, gasoline (except gasoline with additives), alcohol and ethylene glycol, liquefied petroleum gas, propane and butane, fuel oil and many other media. It also has good abrasion resistance and deformation resistance.
The rated temperature range of food grade (FG) nitrile butadiene rubber seat is -18 ℃~82℃. Its composition conforms to CFR standard, part 21, section 177.2600. It is used in the same way as conventional nitrile butadiene rubber but requires FDA approval.
Ethylene propylene rubber EPDM
The rated temperature range of epdm valve seat is -28 ℃~120℃. EPDM is an abbreviation for its constituent, a terpolymer of ethylene, propylene, and diene, often called EPT, Nordell, EPR. Excellent ozone resistance and weather resistance, good electrical insulation, good polarity tolerance and inorganic media. Therefore, it can be widely used in HVAC industry, water, phosphate ester, alcohol, glycol and so on. Ethylene propylene rubber seat is not recommended for use in hydrocarbon organic solvents and oils, chlorinated hydrocarbons, turpentine, or other petroleum fats.
The rated temperature range of food grade epdm valve seat is -28 ℃~120℃. Its composition conforms to CFR standard, part 21, section 177.2600. It is used in the same way as conventional nitrile butadiene rubber but requires FDA approval.
The rated temperature range of ptfe seat is -32℃~200℃. Excellent resistance to high temperature and chemical corrosion. Ptfe has high compactness, good permeability resistance, and can prevent the corrosion of most chemical media.
Conductive teflon is an improved teflon product that allows an electric current to pass through the lining, thereby eliminating the insulation properties of teflon. Because of its conductivity, conductive ptfe cannot be tested by electric spark.
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