First, gas ** electric sealing type ventilation butterfly valve description
\nThe sealed electric ventilated butterfly valve uses a three-eccentric hard sealed butterfly valve for ventilation duct air volume control valve. Under normal conditions, the pressure is low and the sealing requirements are high. It is usually more used for gas pipelines or instead of ventilation butterfly valves, and the sealing performance is much higher than that of conventional ventilation butterfly valves. Can be processed by stainless steel or alloy steel material, small caliber butterfly valve can be cast process, sealed electric ventilated butterfly valve is used for medium temperature. 425\u2103 gold, electric power, petrochemical, water supply and drainage and municipal construction and other industrial pipelines, for regulating flow and load cut-off body use.
\nSecond, electric sealed ventilation product features:
\n1, * gas electric sealing type ventilation butterfly valve with three eccentric sealing structure, thin plate and butterfly plate almost no wear, as long as you see can have a solid sealing function. 2, the seal is made of stainless steel, with the double advantages of metal hard seal and elastic seal, at low and high temperatures have good sealing performance, corrosion resistance and long life characteristics. 3, the surface of cobalt-based cemented carbide, plate sealing surface wear long life. 4, the specification of large butterfly quilted frame structure, high strength, large flow area, small flow resistance. 5, the driver can be passed by multiple stations (90 or 180° Rotate) to install for user use.
\n3. Implement standards
\nDesign specification: GB\/T 12238
\nStructure length: GB\/T 12221
\nFlange connection: GB\/T 9113
\nTest and inspection: GB\/T 13927
\nProduct ID: GB\/T 12220
\nFour, gas ** butterfly valve performance parameters
\nWorking pressure (MPa) 0.25~4.0
\nApplicable temperature (\u2103) < 425 < 200
\nApplicable medium water, oil or non-corrosive medium Nitric acid medium acetic acid medium
\nMaterial Valve body, plate WCB CF8\/304 CF3M\/316L
\nValve stem 2Cr13 304 316L
\nValve body sealing surface surfacing 507 —
\nButterfly sealing surface 304+ flexible graphite 304+PTFE 304+PTFE
\nPacking flexible graphite PTFE PTFE
\nFive, gas butterfly valve size diagram<\/p>\n","protected":false},"excerpt":{"rendered":"

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