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National standard cast steel fixed ball 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:

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(PN1.6 MPa, unit: mm)

DN(mm) 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500
d₁ 25 32 40 50 65 80 100 125 150 200 250 300 337 387 438 489
L 127 140 165 178 190 203 229 356 394 457 533 610 686 762 864 914
H 50 55 80 102 114 127 152 184 219 273 360 395 430 470 550 580
Manual    H1   75 85 95 107 125 152 178 300 330 398 495 580 625 670 698 840
E - - - - - - - - - 116 116 171 171 257 257 257
F - - - - - 1. - - - 350 350 400 420 400 420 400
W 160 160 230 230 400 400 650 1050 1050 600 600 800 800 800 800 800
Electric H2 - - - - - - - - 554 600 652 760 770 830 - 940
L1 - - - - - - - - 235 235 235 259 400 400 - 410
Pneumatic H3 215 240 264 274 379 389 479 552 666 736 926 1059 1127 1393 1468 1538
L2 200 270 270 270 405 405 576 576 776 776 776 1060 1060 1360 1360 1360

 

◆ Main outline connection dimension(PN2.5MPa, unit: mm)

DN(mm) 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500
d1 25 32 40 50 65 80 100 125 150 200 250 300 337 387 438 489
L 165 180 190 216 241 283 305 381 403 502 568 648 762 838 914 991
H 50 55 80 102 114 127 152 184 219 273 360 395 430 470 550 580
Manual    H1   75 85 95 107 125 152 178 300 330 398 495 580 625 670 698 840
E - - - - - - - - - 116 116 171 171 257 257 257
F - - - - - - - - - 350 350 420 420 400 400 400
W 160 160 230 230 400 400 650 1050 1050 600 600 800 800 800 800 800
Electric H2 - - - - - - - - 235 235 400 400 410 410 - 420
L1 - - - - - - - - 74 350 350 420 420 400 - 400
Pneumatic H3 215 240 264 340 379 452 479 646 666 814 1002 1059 1150 1205 1250 1295
L2 200 270 270 405 405 574 574 756 756 1060 1060 1060 1360 1360 2840 2840

Note: The structure length in this table is in accordance with GB/T 12221.

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