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  • 柱塞截止阀1.jpg
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Plunger stop 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:

Cast 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.

◆ Product overview

Because the sealing ring of the plunger globe valve is made of new non-metallic materials, it has the performance of withstanding long-term high temperature and high pressure without losing elasticity, and the contact area between the plunger and the sealing ring is large, and the sealing ring is mixed with good material performance. Reliable and durable. Mainly used in metallurgy, electric industry, chemical industry, oil refining, chemical fertilizer, light industry, food and other industries.

◆Product features

1. In the valve, an interference fit is adopted between the plunger and the sealing ring. By adjusting the pre-tightening force of the middle flange bolt, the lateral force generated by the compression of the sealing ring is sealed with the hole surface in the valve body and the outer circle of the plunger. Ensure the sealing of the valve and prevent external leakage;
2, due to the sealing ring with strong resilience, high wear resistance of non-toxic new sealing material, so the seal is reliable, durable, thereby improving the service life of the valve;
3. This valve combines the advantages of no leakage of the plunger valve and the characteristics of fast opening and closing of the stop valve, and becomes a new variety with novel structure and wide range of uses.

◆ Executive standards

Product Specification Design Specification Structure length Connecting flange TEST AND INSPECTION
GB/T12233GB/T12235 GB/T12221 GB/T79、GB/T9113 GB/T4981

 

◆ Performance specification

Nominal pressure PN 1.6     2.5     4.0    6.4     10.0   MPa  

Low pressure gas seal

Test pressure

0.5~0.7
Shell test pressure 2.4 3.75 6.0 9.6 15.0 Applicable media

C: water, oil, steam

P: Nitric acid R: Acetic acid

High pressure seal test pressure 1.76 2.75 4.4 7.04 11.0 Applicable temperature ≤425℃≤200℃

 

◆ Material of main parts

Valve body material Applicable temperature Applicable media Range pressure
cast steel ≤ 425 ℃ Water, steam, oil PN1.6-10
Stainless Steel ≤ 300 ℃ Nitric acid, acetic acid PN1.6-10
Molybdenum-containing stainless steel ≤ 300 ℃ Nitrogen, hydrogen, ammonia, urea PN1.6-10
Monel ≤ 300 ℃ Hydrogen, Fluorine, Acid PN1.6-10
chrome molybdenum alum steel ≤ 600 ℃ Steam, oil PN1.6-10

 

◆ Main outline connection dimension

Nominal pressure PN DN L H D D1 D2 b  f   Z-Fd Weight WT(kg)
PN1.6MPa 15 130 128 95 65 45 14 2 4-14 3
20 150 165 105 75 55 16 2 4-14 5
25 160 190 115 85 65 16 2 4-14 7
32 180 216 135 100 78 18 2 4-18 8
40 200 236 245 110 85 18 3 4-18 12
50 230 250 160 125 100 20 3 4-18 16
65 290 255 180 145 120 20 3 4-18 22
80 310 255 195 160 135 22 3 8-18 27
100 350 259 215 180 155 24 3 8-18 40
125 400 352 245 210 185 26 3 8-18 72
150 480 362 280 240 210 28 3 8-23 97
200 600 385 335 295 265 30 3 12-23 205
PN2.5MPa 15 130 133 95 65 45 16 2 4-14 4
20 150 178 105 75 55 16 2 4-14 6
25 160 180 115 85 65 16 2 4-14 7
32 180 195 135 100 78 18 2 4-18 10
40 200 220 145 110 85 18 3 4-18 13
50 230 250 160 125 100 20 3 4-18 17
65 290 272 180 145 120 22 3 8-18 24
80 310 275 195 160 135 22 3 8-18 33
100 350 312 230 190 160 24 3 8-23 49
125 400 365 270 220 188 28 3 8-25 87
150 480 410 300 250 218 30 3 8-25 115
200 600 450 360 310 278 34 3 12-25 210

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