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Brief Introduction
The D941H electric hard seal flange butterfly valve adopts a three eccentric hard seal structure design. After strict calculation, the "" - shaped sealing ring has al no friction with the butterfly plate, solving the problem of traditional eccentric butterfly valves still having sliding contact friction on the sealing surface at the moment of opening and closing from 0 to 10 degrees. It achieves the effect of separation of the sealing surface of the butterfly plate at the moment of opening and sealing at the moment of closing, and extends the service life and achieves the good sealing performance.
The sealing surface of the disc plate is made of hard gold bearing cobalt based welding, which is wear-resistant. The large-sized disc plate adopts a frame structure with high strength, large overcurrent area, and low flow resistance. Its unique structure allows the "switch" to be completed by simply rotating the valve stem 90 °. Therefore, electric hard sealed butterfly valves are widely used in pipelines for corrosive media such as metallurgy, electricity, petroleum, chemical, air, gas, combustible gases, and water supply and drainage with medium temperatures ≤ 425 ℃, as the good device for regulating flow and cutting off fluids. The product complies with the national GB/T13927-92 valve pressure test standard.
Technical Parameter
Electric actuator optional features | Switching, integral, adjusting, intelligent |
Electric actuators are available in a variety of models | Q, DQ, QM, QC, AKQ series, large diameter optional Z series, AK series |
voltage | AC220V,AC110V,AC380,DC12V,DC24V,DC110V |
Nominal diameter | DN50mm~DN1200mm |
Nominal pressure | PN1.0MPa-PN2.5MPa |
Applicable temperature | -30~+425℃ |
Connection | Flanged type |
Body material | Carbon steel, stainless steel |
Disc material | Carbon steel, stainless steel, alloy steel, etc |
Seat lining | Tungsten carbide, tungsten carbide, nickel alloy, graphite composite, PTFE |
Applicable media | Water, steam, oil, weakly corrosive media, etc |
Main Dimension Table
DN (mm) |
L | H | 1.0MPa | 1.6MPa | ||||||
D | D1 | D2 | n-φd | D | D1 | D2 | n-φd | |||
50 | 108 | 320 | 160 | 125 | 100 | 4-φ18 | 160 | 125 | 99 | 4-Φ18 |
65 | 112 | 370 | 195 | 145 | 120 | 4-φ18 | 180 | 145 | 118 | 4-Φ18 |
80 | 114 | 370 | 215 | 160 | 135 | 8-Φ18 | 195 | 160 | 132 | 8-Φ18 |
100 | 127 | 370 | 245 | 180 | 155 | 8-Φ18 | 215 | 180 | 156 | 8-Φ18 |
125 | 140 | 420 | 280 | 210 | 185 | 8-Φ18 | 245 | 210 | 184 | 8-φ23 |
150 | 140 | 505 | 335 | 240 | 210 | 8-φ23 | 280 | 240 | 211 | 12-Φ23 |
200 | 152 | 610 | 390 | 295 | 265 | 8-φ23 | 335 | 295 | 266 | 12-φ26 |
250 | 165 | 665 | 440 | 350 | 320 | 12-φ23 | 390 | 355 | 319 | 12-φ26 |
300 | 178 | 755 | 460 | 400 | 368 | 12-φ23 | 460 | 410 | 370 | 16-Φ26 |
350 | 190 | 860 | 500 | 460 | 428 | 16-φ23 | 520 | 470 | 429 | 16-φ26 |
400 | 216 | 890 | 565 | 515 | 482 | 16-φ25 | 580 | 525 | 480 | 16-φ30 |
450 | 222 | 966 | 615 | 565 | 532 | 20-φ25 | 640 | 585 | 530 | 20-φ30 |