Zhejiang Guoji Fluid Control Co., LTD

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D941W electric sealed ventilated butterfly valve for gas

First, gas ** electric sealing type ventilation butterfly valve description
The 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℃ gold, electric power, petrochemical, water supply and drainage and municipal construction and other industrial pipelines, for regulating flow and load cut-off body use.
Second, electric sealed ventilation product features:
1, * 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.
3. Implement standards
Design specification: GB/T 12238
Structure length: GB/T 12221
Flange connection: GB/T 9113
Test and inspection: GB/T 13927
Product ID: GB/T 12220
Four, gas ** butterfly valve performance parameters
Working pressure (MPa) 0.25~4.0
Applicable temperature (℃) < 425 < 200
Applicable medium water, oil or non-corrosive medium Nitric acid medium acetic acid medium
Material Valve body, plate WCB CF8/304 CF3M/316L
Valve stem 2Cr13 304 316L
Valve body sealing surface surfacing 507 —
Butterfly sealing surface 304+ flexible graphite 304+PTFE 304+PTFE
Packing flexible graphite PTFE PTFE
Five, gas butterfly valve size diagram