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
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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