GB flange globe 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
National standard flange stop valve is suitable for nominal pressure PN1.6 ~ 16.0MPa, working temperature -46~550 ℃ of petroleum, chemical, pharmaceutical, fertilizer, power industry and other working conditions of the pipeline, cut off or connected to the pipeline medium.
◆Product features
1, the product structure is reasonable, reliable sealing, excellent performance, beautiful appearance;
2, the sealing surface surfacing Co-based hard alloy, wear resistance, corrosion resistance, anti-scratch performance, long service life;
3. The valve stem has good corrosion resistance and abrasion resistance after tempering and surface nitriding treatment;
4. The valve is equipped with an inverted sealing structure, which is reliable in sealing;
5. Parts material and flange size can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.
◆ Executive standards
| Product Specification | Design Specification | Structure length | Connecting flange | TEST AND INSPECTION | Pressure-Temperature |
| GB/T 12235 | GB/T 12221 | JB/T 79.1、GB/T9113HG/T20592 | GB/T 26480GB/T13927 | GB/T12224 |
◆ Main performance specifications
1. Test pressure
| Nominal pressure PN(MPa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| Shell strength test | 2.4 | 3.8 | 6.0 | 9.6 | 15 | 24 |
| Upper seal test | 1.8 | 2.8 | 4.4 | 7.0 | 11 | 18 |
| Sealing test | 1.8 | 2.8 | 4.4 | 7.0 | 11 | 18 |
2. Applicable medium and applicable temperature
| Product Type | Applicable media | Applicable temperature ℃ |
| J41HY-Type C J941HY-Type C |
Water, oil, steam | ≤ 425 |
| J41HY-Type P J941HY-Type P |
Nitric acid | ≤200 |
| J41HY-Type R | Acetic acid | ≤200 |
| J41HY-Type I J941HY-Type I |
Water, oil, steam | ≤ 550 |
◆ Main parts materials
| Product Type | Part Name | |||||||
| Body/Bonnet | Stem | Disc | Sealing surface | Stem Nut | Packing | Fasteners | Handwheel | |
| J41HY-Type C J941HY-Type C |
25/WCB | Chrome stainless steel | 2Cr1325 | H: Stainless steel Y: Cobalt base hard Quality alloy steel |
Copper alloy | flexible graphite | high quality carbon steel | malleable cast iron |
| J41HY-Type P J941HY-Type P |
chromium-nickel steel | chromium-nickel steel | chromium-nickel steel | chromium-nickel steel | Copper alloy | flexible graphite | Stainless Steel | malleable cast iron |
| J41HY-Type R | chromium nickel molybdenum steel | chromium nickel molybdenum steel | chromium nickel molybdenum steel | chromium nickel molybdenum steel | Copper alloy | flexible graphite | Stainless Steel | malleable cast iron |
| J41HY-Type I J941HY-Type I |
chromium molybdenum steel | chromium molybdenum steel | Alloy Steel | cobalt base hard alloy steel | Copper alloy | flexible graphite | Alloy Steel | malleable cast iron |
◆ Main outline connection dimension
| Nominal pressure PN | DN(mm) | L | D | D1 | D2 | b | f | Z-Fd | H | D0 |
| PN1.6MPa | 50 | 230 | 165 | 125 | 102 | 18 | 3 | 4-F18 | 350 | 240 |
| 65 | 290 | 185 | 145 | 122 | 18 | 3 | 8-F18 | 355 | 280 | |
| 80 | 310 | 200 | 160 | 138 | 20 | 3 | 8-F18 | 400 | 280 | |
| 100 | 350 | 220 | 180 | 158 | 20 | 3 | 8-F18 | 415 | 320 | |
| 125 | 400 | 250 | 210 | 188 | 22 | 3 | 8-F18 | 460 | 360 | |
| 150 | 480 | 285 | 240 | 212 | 22 | 3 | 8-F22 | 510 | 400 | |
| 200 | 600 | 340 | 295 | 268 | 24 | 3 | 12-F22 | 710 | 400 | |
| 250 | 730 | 405 | 355 | 320 | 26 | 3 | 12-F26 | 789 | 450 | |
| 300 | 850 | 460 | 410 | 378 | 28 | 4 | 12-F26 | 925 | 500 | |
| PN2.5MPa | 50 | 230 | 165 | 125 | 102 | 20 | 3 | 4-F18 | 350 | 240 |
| 65 | 290 | 185 | 145 | 122 | 22 | 3 | 8-F18 | 400 | 280 | |
| 80 | 310 | 200 | 160 | 138 | 24 | 3 | 8-F18 | 355 | 280 | |
| 100 | 350 | 235 | 190 | 162 | 24 | 3 | 8-F22 | 415 | 320 | |
| 125 | 400 | 270 | 220 | 188 | 26 | 3 | 8-F26 | 460 | 360 | |
| 150 | 480 | 300 | 250 | 218 | 28 | 3 | 8-F26 | 510 | 400 | |
| 200 | 600 | 360 | 310 | 278 | 30 | 3 | 12-F26 | 710 | 400 | |
| 250 | 730 | 425 | 370 | 335 | 32 | 3 | 12-F30 | 789 | 450 | |
| 300 | 850 | 485 | 430 | 395 | 34 | 4 | 16-F30 | 925 | 500 |
Note: The flange size in this table is in accordance with GB/T9113-2010, and the structure length is in accordance with GB/T 12221-2005.
Product inquiry