Manual gas valve by the valve body, disc and blind composition. Butterfly worm gear drive, blind manual device. Butterfly vice seal for the three eccentric hard seal structure, blind seal system using a pair of rubber seal ring seal. Gas combination valve has three eccentric eccentric sealing butterfly valve and blind glasses valve dual function, is the ideal gas pipeline cutting device. Nominal diameter (DN) 100 - 1000 Nominal pressure (MPa) 0.05 0.1 0.25 0.6 Test pressure (MPa) Strength 0.075 0.15 0.38 0.90 Seal 0.06 0.11 0.28 0.7 Applicable temperature -20 ℃ - 350 ℃ Applicable medium Industrial gas, hot air, Valve body Carbon steel Seat sealing surface Material Stainless steel Disc seal material Stainless steel Blind seal surface Manganese steel (hard chrome plated) Filler Expanded graphite, Teflon blind Open angle ≈ 80 ° Blind seal Fluoroelastomer , Silicone rubber, nitrile rubber, polytetrafluoroethylene Model DMZ 341X - ①C Note: ①- nominal pressure
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