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Butterfly check 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.

Key words:

Classification:

Stainless 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.

◆ Product use

Product model: H76W
Product specifications: DN 40~600
Nominal pressure: PN 1.6MPa
Applicable medium: water, air, oil, acid
Applicable temperature:-29~550 ℃
Thread standard: BSPT/BSP/NPT/DIN/JIS/RC/G
Design and manufacture: GB/T 12237/ANSI B16.34
Connection size: GB/T9113.1/ASME B16.5
Inspection and test: GB/T 13927/API 598







◆ Main component materials

Component Name Material
Valve body CF8/CF8M
Bonnet CF8/CF8M
Stem CF8/CF8M
Spring Stainless steel, SS316, 304

 

◆ Main outline connection dimension

Nominal pressure PN Nominal diameter DN(mm) Dimensions (mm) Weight
(Kg)
Piping flange (for reference)
L D D3 D2 D1 n Number of bolts d Bolt length D
PN1.6MPa 40 43 92 55 41 1.8 110 4 M16 105
50 43 107 65.5 51 2 125 4 M16 150
65 46 127 81 65 3 145 4 M16 155
80 64 142 95 80 4 160 8 M16 160
100 64 162 117.5 102 6 180 8 M16 165
125 70 192 145.5 127 8 210 8 M16 180
150 76 218 170.5 152 13 240 8 M20 205
200 89 273 227.5 203 24 295 12 M20 235
250 114 330 266 254 37 355 12 M24 265
300 114 385 312 305 50 410 12 M24 305
350 127 445 361 350 80 470 16 M24 310
400 140 495 406 400 110 525 16 M27 330
450 152 555 450 450 145 585 20 M27 345
600 152 615 505 500 180 650 20 M30 370
600 178 730 624 600 280 770 20 M33 380

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