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  • 电动楔式闸阀1.jpg
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Electric wedge gate 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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Cast steel 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 pressure PN DN(mm) L D D1 D₂ b  f   Z-Fd H Electric device WT
(Kg)
PN1.6MPa 50 250 160 125 100 16 3 4-18 653 DZW20 59
65 265 180 145 120 18 3 4-18 665 DZW20 62
80 280 195 160 135 18 3 8-18 725 DZW20 74
100 300 215 180 155 20 3 8-18 787 DZW20 92
150 350 280 240 210 24 3 8-23 955 DZW30 161
200 400 335 295 265 26 3 12-23 1105 DZW30 219
250 450 405 355 320 30 3 12-25 1343 DZW45 376
300 500 460 410 375 30 3 12-25 1516 DZW60 484
350 550 520 470 435 34 4 16-25 1678 DZW60 695
400 600 580 525 485 36 4 16-30 1849 DZW90 977
450 650 640 585 545 40 4 20-30 1937 DZW90 1033
500 700 705 650 608 44 4 20-34 2234 DZW120 1087
600 800 840 770 718 48 5 20-41 2432 DZW180 1357
PN2.5MPa 50 250 160 125 100 20 3 4-18 653 DZW20 64
65 265 180 145 120 22 3 4-18 665 DZW20 65
80 280 195 160 135 22 3 8-18 725 DZW20 79
100 300 230 190 160 24 3 8-23 787 DZW20 98
125 325 270 220 188 28 3 8-25 902 DZW30 154
150 350 300 250 218 30 3 8-25 955 DZW30 168
200 400 360 310 278 34 3 12-25 1105 DZW45 219
250 450 425 370 332 36 3 12-30 1343 DZW45 390
300 500 485 430 390 40 4 16-30 1516 DZW60 505
350 550 550 490 448 44 4 16-34 1678 DZW60 736
400 600 610 550 505 48 4 16-34 1849 DZW90 1027
450 650 660 600 555 50 4 16-34 1937 DZW90 1139
500 700 730 660 610 52 4 20-34 2234 DZW120 1228

Note: The flange size in this table is in accordance with GB/T9113-2010, and the structure length is in accordance with GB/T 12221-2005.

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