D673H Diameter: 50 ~ 1200mm Pressure: 1.0MPa ~ 1.6MPa Material: Cast steel, stainless steel D673H Pneumatic clamp-on-seal butterfly valve features 1, the valve with three eccentric seal structure, the valve Seat and disc almost no wear and tear, with more and more tight sealing function. 2, the ring made of stainless steel, with the advantages of both metal seal and flexible seal, both in the case of low temperature and high temperature, have excellent sealing performance, with corrosion resistance, long service life and so on. 3, the sealing surface of the plate is cladded with cobalt-based hard alloy, the sealing surface is resistant to abrasion and long service life. 4, Large-format butterfly plate frame structure, high strength, large flow area, small flow resistance. 5, the valve has a two-way sealing function, the installation is not subject to restrictions on the flow of media, but also the location of space, can be installed in any direction. 6, the drive can be multi-station (rotated 90 ° or 180 °) installation, user-friendly. D673H Pneumatic clamp on the main technical parameters of the butterfly valve seal Nominal through DN (mm) 50 ~ 2000 Nominal pharmacological PN (MPa) 0.6 1.0 1.6 2.5 Sealing test (MPa) 0.66 1.1 1.76 2.75 Strength test (MPa) 0.9 1.5 2.4 3.75 Applicable temperature Carbon steel: -29 ℃ ~ 425 ℃ Stainless steel: -40 ℃ ~ 650 ℃ Applicable medium Water, air, natural gas, oil and weak corrosive fluid Leakage rate Complies with GB / T13927-92 standard Drive Worm gear, electric, Pneumatic, hydraulic D673H Pneumatic clamping on the main parts of the butterfly valve hard material Name Material Valve body WCB, alloy steel, stainless steel, QT450-10 Disc WCB, alloy steel, stainless steel, QT450-10 Shaft 2Cr13 stainless steel, alloy Steel ring Stainless steel ring packing Flexible graphite D673H Pneumatic clamp on the use of hard-sealing butterfly valve Standard manufacturing standards JB / T 8527-97 Flange standard GB9113-2000 Structural length standard GB12221-89 Test standard GB / T 13927-92
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