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Flange type double eccentric butterfly valve

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

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Classification:

Ductile iron valve series

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Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆ Product overview

D342X flange type double eccentric butterfly valve is my company's newly developed soft sealing eccentric flange butterfly valve, mainly suitable for water, power plants, steel smelting, papermaking, chemical, water engineering, environmental facilities construction and other systems for water supply and drainage, especially suitable for water pipeline as a regulation and closure equipment.

◆ Main technical specifications

Nominal pressure PN(MPa) 1.0 1.6
Nominal diameter DN(mm) 100~1200 100~1200
Test pressure
(MPa)
Shell
Seal


1.5 2.4
1.1 1.76
Applicable temperature -15 ℃ ~ 110 ℃
Applicable media Fresh water, sewage, sea water, air, etc

 

◆ Main outline connection dimension

DN Manual unit L D D1 d  b     short structure long structure H H1 H2 L1 L2 L3 L4 L5 W
short structure long structure Z-Fd M Z-Fd
100 3D-15 - 190 220 180 156 24 - - 8-19 446 234 122 202 48 121 - 180 180
150 3D-20 - 210 285 240 211 26 - - 8-23 521.5 279 153 222 58 128 - 194 180
200 3D-50 89 230 340 295 266 30 8-23 20 12-23 690 349 216 275 70 163 - 241 250
250 3D-120 114 250 405 355 319 32 8-28 24 12-28 782 398 209 368 95 193 - 291 350
300 3D-30/250 114 270 460 410 370 32 8-28 24 12-28 980 556 277 449 178 254 104 473 300
350 3D-30/250 127 290 520 470 429 36 12-28 24 16-28 1048 586 315 449 178 254 104 473 300
400 3D-30/400 140 310 580 525 480 38 12-31 27 16-31 1138 653 335 486 196 254 130 528 300
450 3D-30/400 152 330 640 585 548 40 16-31 27 20-31 1202 672 380 486 196 254 130 528 300
500 3D-60/800 152 350 715 650 609 42 16-34 30 20-34 1421 793 428 627 244 254 162 596 400
600 3D-60/800 178 390 840 770 720 48 16-37 33 20-37 1488 808 480 627 244 245 162 596 400
700 3D-120/1500 229 430 910 840 794 54 20-37 33 24-37 1889 1058 681 635 370 295 196 711 300
800 3D-120/1500 241 470 1025 950 901 58 20-40 36 24-40 2032 1133 749 635 370 295 196 711 300
900 3D-120/2500 241 510 1125 1050 1001 62 24-40 36 28-40 2258 1266 842 955 455 295 295 807 300

Note: The flange size in this table is in accordance with GB/T17241.6 standard, and the structure length is in accordance with GB/T12221-2005 standard.

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