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  • 气动对夹式中线蝶阀1.jpg
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Pneumatic 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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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.

◆ Main outline connection dimension

Nominal diameter DN
(Mm)
L H H0 A B 0.6MPa 1.0MPa 1.6MPa
D1 4-Фd D1 4-Фd D1 4-Фd
50 43 63 315 180 65 110 4-14 125 4-19 125 4-19
65 46 70 330 180 65 130 4-14 145 4-19 145 4-19
80 46 83 390 240 72 150 4-19 160 4-19 160 4-19
100 52 105 431 240 72 170 4-19 180 4-19 180 4-19
125 56 115 455 240 72 200 4-19 210 4-19 210 4-19
150 56 137 626 350 93 225 4-19 240 4-23 240 4-23
200 60 164 720 350 93 280 4-19 295 4-23 295 4-23
250 68 206 800 550 350 335 4-19 350 4-23 355 4-28
300 78 230 860 600 350 395 4-23 400 4-23 410 4-28
350 78 248 883 600 350 445 4-23 460 4-23 470 4-28
400 102 289 972 600 350 495 4-23 515 4-28 525 4-31
450 114 320 1043 750 380 550 4-23 565 4-28 585 4-31
500 127 343 1098 750 380 600 4-23 620 4-28 650 4-34
600 154 413 1236 750 380 705 4-26 725 4-31 770 4-37
700 165 478 1431 750 380 810 4-26 840 4-31 840 4-37
800 190 525 1488 750 380 920 4-31 950 4-34 950 4-40
900 203 620 1615 1250 380 1020 4-31 1050 4-34 1050 4-40
1000 216 725 1765 1500 580 1120 4-31 1160 4-37 1170 4-43
1200 254 780 1976 1500 580 1340 4-34 1380 4-40 1390 4-49

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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