American standard cast steel gate 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
American standard cast steel gate valve is the control component in the fluid conveying system, with the functions of cut-off, regulation, diversion, prevention of reverse flow, pressure stabilization, diversion or overflow pressure relief, etc. Valves for fluid control systems, from the simplest American standard stop valve to various American standard valves used in extremely complex automatic control systems, have many varieties and specifications. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals and radioactive media.
◆Product features
1, product design and manufacturing in line with foreign advanced standards, reliable sealing, excellent performance;
2. The structure design is compact and reasonable, and the appearance is beautiful;
3, the use of wedge type elastic gate structure, medium and large diameter set of rolling bearings, open and close easily;
4, the valve body material varieties, packing, gasket according to the actual conditions or user requirements reasonable selection, can be applied to a variety of pressure, temperature and medium conditions.
◆ Executive standards
| design and manufacture | Structure length | Connecting flange | Butt welding connection size | Pressure-Temperature | TEST AND INSPECTION |
| API 600 → API 6D | ANSI B16.10 | ASME B16.5/B16.47 | ANSI B16.25 | ANSI B16.34 | API 598 → API 6D |
◆ Main performance specifications
| Nominal pressure (Lb) | Strength test | Water seal test | Gas seal test | |||
| MPa | Lbf/in² | MPa | Lbf/in² | MPa | Lbf/in² | |
| 150 | 3.1 | 450 | 2.2 | 315 | 0.5~0.7 | 60~100 |
| 300 | 7.8 | 1125 | 5.6 | 815 | ||
| 600 | 15.3 | 2225 | 11.2 | 1630 | ||
| 900 | 23.1 | 3350 | 16.8 | 2440 | ||
| 1500 | 38.4 | 5575 | 28.1 | 4080 | ||
| 2500 | 64.0 | 9367 | 46.8 | 6873 | ||
◆ Main parts materials
| Body/Bonnet/Disc | Stem | Sealing surface | Gasket (ring) | Packing | Working temperature (℃) | Applicable media |
| WCB | 20Cr13 | 13Cr STL Body Material PTFE Nylon |
reinforced flexible graphite 13Cr flexible graphite SFB-2 08 mild steel F304 F316 F304L F316L |
NBR/FPM Flexible Graphite reinforced flexible graphite SFB/260 SFP/260 PTFE |
≤ 425 | Water, steam, oil |
| WC1 | 38CrMoAl 25Cr2Mov |
≤ 450 | ||||
| WC6 | ≤ 540 | |||||
| WC9 | ≤ 570 | |||||
| C5 C12 | ≤ 540 | |||||
| CF8 | F304 | ≤ 600 | Nitric acid, acetic acid, urea | |||
| CF3 | F316 | |||||
| CF8M | F304L | |||||
| CF3M | F316L |
◆ Main outline connection dimension
| Pound Class | NPS | L | D | D1 | D2 | b-f | Z-Fd | H | D0 |
| Class 150Lb | 2 | 178 | 150 | 120.7 | 92.1 | 14.3-2 | 4-19 | 310 | 200 |
| 2-1/2 | 190 | 180 | 139.7 | 104.8 | 15.9-2 | 4-19 | 380 | 220 | |
| 3 | 203 | 190 | 152.4 | 127 | 17.5-2 | 4-19 | 412 | 240 | |
| 4 | 229 | 230 | 190.5 | 157.2 | 22.3-2 | 8-19 | 471 | 280 | |
| 5 | 254 | 255 | 215.9 | 185.7 | 22.3-2 | 8-22 | 516 | 300 | |
| 6 | 267 | 280 | 241.3 | 215.9 | 23.9-2 | 8-22 | 588 | 300 | |
| 8 | 292 | 345 | 298.5 | 269.9 | 27-2 | 8-22 | 741 | 350 | |
| 10 | 330 | 405 | 362 | 323.8 | 28.6-2 | 12-25 | 903 | 400 | |
| 12 | 356 | 485 | 431.8 | 381 | 30.2-2 | 12-25 | 1054 | 500 | |
| 14 | 381 | 535 | 476.3 | 412.8 | 33.4-2 | 12-29 | 1295 | 600 | |
| 16 | 406 | 595 | 539.8 | 469.9 | 35-2 | 16-29 | 1435 | 600 | |
| 18 | 432 | 635 | 577.9 | 533.4 | 38.1-2 | 16-32 | 1626 | 650 | |
| 20 | 457 | 700 | 635 | 584.2 | 41.3-2 | 20-32 | 1859 | 650 | |
| Class 300Lb | 2 | 216 | 165 | 127 | 92.1 | 20.7-2 | 8-19 | 353 | 250 |
| 2-1/2 | 241 | 190 | 149.2 | 104.8 | 23.9-2 | 8-22.5 | 377 | 250 | |
| 3 | 282 | 210 | 168.3 | 127 | 27-2 | 8-22.5 | 397 | 300 | |
| 4 | 305 | 255 | 200 | 157.2 | 30.2-2 | 8-22.5 | 482 | 300 | |
| 5 | 381 | 280 | 235 | 185.7 | 33.4-2 | 8-22.5 | 568 | 350 | |
| 6 | 403 | 320 | 269.9 | 215.9 | 35-2 | 12-22.5 | 625 | 350 | |
| 8 | 419 | 380 | 330.2 | 269.9 | 39.7-2 | 12-25.5 | 776 | 400 | |
| 10 | 457 | 445 | 387.4 | 323.8 | 46.1-2 | 16-29 | 958 | 500 | |
| 12 | 502 | 520 | 450.8 | 381 | 49.3-2 | 16-32 | 1135 | 600 | |
| 14 | 762 | 585 | 514.4 | 412.8 | 52.4-2 | 20-32 | 1205 | 600 | |
| 16 | 838 | 650 | 571.5 | 469.9 | 55.6-2 | 20-35 | 1367 | 650 |
Note: The flange size in this table is in accordance with ASME B16.5/B16.47 standard, and the structure length is in accordance with ASME B16.10.
Product inquiry