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Vertical Flange 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.

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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.

◆Main technical parameters

Design Criteria GB/T12224
Pressure-Temperature Rating GB/T12224
Structure length Factory logo or according to customer requirements
Flange connection size JB/T 79、GB/T9113、HG/T20592
Welding end connection GB/T12224
Inspection and test JB/T9092、GB/T13927、GB/T26480
Nominal pressure (MPa) PN1.0 PN1.6 PN2.5
Test pressure
(MPa)
Shell test 1.5 2.4 3.75
High pressure seal test 1.1 1.76 2.75
Applicable temperature -29 ℃ ~ 550 ℃ (different materials for different working conditions)
Applicable media Water, oil, steam and various corrosive media
(different media use different materials)

 

◆ Main parts materials

Part Name Material
Valve body CF8/CF8M
Disc 304/316
Stem 304/316
Positioning frame CF8/CF8M
Set screw 304/316

 

◆ Main outline connection dimension

Nominal diameter DN PN 1.6MPa PN 2.5MPa
L D D1 D2 b-f Z-Fd L D D1 D2 b-f Z-Fd
32 152 135 100 78 16-2 4-18 152 135 100 78 18-2 4-18
40 160 145 110 85 16-3 4-18 160 145 110 85 18-3 4-18
50 170 160 125 100 16-3 4-18 170 160 125 100 20-3 4-18
65 180 180 145 120 18-3 4-18 180 180 145 120 22-3 8-18
80 200 195 160 135 20-3 8-18 200 195 160 135 22-3 8-18
100 210 215 180 155 20-3 8-18 210 230 190 160 24-3 8-23
125 280 245 210 185 22-3 8-18 280 270 220 188 28-3 8-26
150 300 280 240 210 24-3 8-23 300 300 250 218 30-3 8-26
200 380 335 295 265 26-3 12-23 380 360 310 278 34-3 12-26
250 450 405 355 320 30-3 12-26 450 425 370 332 36-3 12-30
300 450 460 410 375 30-4 12-26 450 485 430 390 40-4 16-30
350 500 520 470 435 34-4 16-26 500 550 490 448 44-4 16-34
400 550 580 525 485 36-4 16-30 550 610 550 505 48-4 16-36
450 600 640 585 545 40-4 20-30 600 660 600 555 50-4 20-36
500 650 705 650 608 44-4 20-34 650 730 660 610 52-4 20-41

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