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Manual wafer type center line 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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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.

◆ Main outline connection dimension

Nominal diameter DN
(Mm)
L H D71X D371X 0.6MPa 1.0MPa 1.6MPa
H0 A B HO A B D1 4-Фd D1 4-Фd D1 4-Фd
50 43 63 235 270 65 306 180 200 110 4-14 125 4-19 125 4-19
65 46 70 250 270 65 321 180 200 130 4-14 145 4-19 145 4-19
80 46 83 275 270 65 346 180 200 150 4-19 160 4-19 160 4-19
100 52 105 316 270 65 387 180 200 170 4-19 180 4-19 180 4-19
125 56 115 340 310 65 411 180 200 200 4-19 210 4-19 210 4-19
150 56 137 376 310 65 447 270 280 225 4-19 240 4-23 240 4-23
200 60 164 - - - 572 270 280 280 4-19 295 4-23 295 4-23
250 68 206 - - - 646 270 280 335 4-19 350 4-23 355 4-28
300 78 230 - - - 738 380 420 395 4-23 400 4-23 410 4-28
350 78 248 - - - 761 380 420 445 4-23 460 4-23 470 4-28
400 102 289 - - - 877 450 470 495 4-23 515 4-28 525 4-31
450 114 320 - - - 938 480 490 550 4-23 565 4-28 585 4-31
500 127 343 - - - 993 480 490 600 4-23 620 4-28 650 4-34
600 154 413 - - - 1131 480 490 705 4-26 725 4-31 770 4-37
700 165 478 - - - 1476 640 660 810 4-26 840 4-31 840 4-37
800 190 525 - - - 1533 640 660 920 4-31 950 4-34 950 4-40
900 203 585 - - - 1655 750 860 1020 4-31 1050 4-34 1050 4-40
1000 216 640 - - - 1765 850 900 1120 4-31 1160 4-37 1170 4-43
1200 254 755 - - - 1995 850 900 1340 4-34 1380 4-40 1390 4-49
1400 279 910 - - - 2310 1000 925 1560 4-37 1590 4-43 1590 4-49
1600 318 1030 - - - 2595 1000 925 1760 4-37 1820 4-49 1820 4-56
1800 356 1140 - - - 2810 1100 980 1970 4-40 2020 4-49 2020 4-56
2000 406 1250 - - - 3100 1100 980 2180 4-43 2230 4-49 2230 4-62

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. The products can be produced according to ISO5211 international standards.

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