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  • 氧气专用截止阀1.jpg
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Special stop valve for oxygen

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

Product Consulting:

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 performance specifications

Nominal diameter (DN) 15-400
Nominal pressure (MPa) 1.6 2.5 4.0
Test pressure
(MPa)
Shell test 2.4 3.8 6.0
High pressure seal 1.8 2.8 4.4
Low pressure gas seal 0.6 0.6 0.6
Upper seal 0.6 0.6 0.6
Applicable temperature ≤ 200 ℃
Applicable media

Oxygen

 

◆ Main parts materials

Part Name Materials
Body/Bonnet Stainless Steel
Stem Stainless Steel
Disc Stainless Steel
Stem Nut Bronze
Packing Graphite
Gasket Stainless Steel Graphite
Handwheel ductile iron

 

◆ Main outline connection dimension

DN(mm) L D D1 D2 b Z-Fd D0 H H1 L1
JY41W-16P/PL  JY41W-16T
15 130 95 65 45 16 4-F14 100 190 - -
20 150 105 75 55 16 4-F14 100 213 - -
25 160 115 85 65 16 4-F14 125 236 - -
32 180 135 100 78 18 4-F18 180 312 - -
40 200 145 110 85 18 4-F18 160 328 - -
50 230 160 125 100 20 4-F18 320 450 - -
65 290 180 145 120 22 8-F18 360 530 - -
80 310 195 160 135 22 8-F18 400 560 - -
100 350 230 190 160 24 8-F23 450 618 - -
125 400 270 220 188 28 8-F25 450 675 - -
150 480 300 250 218 30 8-F25 560 743 - -
200 600 360 310 278 34 12-F25 640 850 - -
250 650 425 370 332 36 12-F30 720 975 340 380
300 750 485 430 390 40 16-F30 800 1115 340 415
400 950 610 550 505 48 16-F34 900 1380 340 465

 

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