API Cast Steel Bellows Gate Valve
Features and benefits
● Long cycle life bellows (2000 cycles) in Gr. 321 (stainless), Inconel for special applications, (may be replaced with Monel trim to resist corrosion or Hastelloy C for chlorine service).
● Improved body-bonnet joint: Graphite reinforced with SS foil gasket for Class 150 valves. Fully-encased, spiral wound graphite-filled Gr. 316 (stainless) gasket for Classes 300-600.
● Bolted body-bonnet for fast serviceability. Hermetically-sealed bonnets available for Classes 300 and 600.
● Two or three section bellows assembly.
● Non-rotating stemprevents torsion of bellows.
● Two secondary stem seals: a) Backseat in open position; b) Graphite packing.
● Welded-in seat hardfaced with CoCr alloy.
● Wedge hardfaced with CoCr alloy for long life.
● Seating faces hardfaced with CoCr alloy, ground and lapped.
| Size: | |
|---|---|
WZ41H
LOMYV
8481804090
| Application | |||
| Hot oil system, steam system, hot and cold water system etc. | |||
| Advantage | |||
| 1.Bellow seal element. The key part of bellow sealed globe valves is metal bellow. It is the connection between cover and stem with automatic roll welding. The metal bellow can keep the stem part no leakage. | |||
| 2.Benefit from the con and streamline shape design, the disc has a reliable seal and longer service life. | |||
| 3.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal. | |||
| 4.Grease nipple. It can direct lubricate the stem, nut and sleeve. | |||
| 5.Ergonomic hand wheel. It provide longer service life and easier operation. | |||
| Technical specification | |||
| Design standard: DIN 3356 API600 ANSI16.34 JIS GOST | |||
| Face to face dimension: ASME B 16.10 | |||
| Flanged ends: ASME B 16.5 | |||
| Test & inspection: API598 |
| Performance Specifications | ||||
| Nominal Pressure | 150LB | 300LB | 600LB | |
| Shell Test | 3.0MPa | 7.5MPa | 15.0MPa | |
| Pressure | Seal Test | 2.2MPa | 5.5MPa | 11.0MPa |
| Test | Back Seal Test | 2.2MPa | 5.5MPa | 11.0MPa |
| AIRROOF | 0.6MPa | 0.6MPa | 0.6MPa | |
| Suitable Temperature | (-)29-425℃ | |||
| Suitable Medium | W.O.G | |||
| Size | 2″ | 2-1/2″ | 3″ | 4″ | 5″ | 6″ | 8″ | |
| 150LB | 178 | 190 | 203 | 229 | 254 | 267 | 292 | |
| L | 300LB | 216 | 241 | 283 | 305 | 381 | 403 | 419 |
| 600LB | 292 | 330 | 356 | 432 | / | 559 | 660 | |
| 150LB | 152 | 178 | 190 | 229 | 254 | 279 | 343 | |
| A | 300LB | 165 | 191 | 210 | 254 | 279 | 318 | 381 |
| 600LB | 165 | 191 | 210 | 273 | 330 | 356 | 419 | |
| 150LB | 120.5 | 139.5 | 152.5 | 190.5 | 215 | 241.5 | 298.5 | |
| B | 300LB | 127 | 149 | 168 | 200 | 235 | 270 | 330 |
| 600LB | 127 | 149 | 168 | 216 | 266.5 | 292 | 349 | |
| 150LB | 92 | 105 | 127 | 157 | 186 | 216 | 270 | |
| C | 300LB | 92 | 105 | 127 | 157 | 186 | 216 | 270 |
| 600LB | 92 | 105 | 127 | 157 | 186 | 216 | 270 | |
| 150LB | 16 | 17.5 | 19 | 24 | 25 | 26 | 29 | |
| b | 300LB | 22 | 25 | 29 | 32 | 35 | 37 | 41 |
| 600LB | 26 | 29 | 32 | 38 | 45 | 48 | 56 | |
| 150LB | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | |
| f | 300LB | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 |
| 600LB | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | |
| 150LB | 4×19 | 4×19 | 4×19 | 8×19 | 8×22 | 8×22 | 8×22 | |
| N-φ | 300LB | 8×19 | 8×22 | 8×22 | 8×22 | 8×22 | 12×22 | 12×25 |
| 600LB | 8×19 | 8×22 | 8×22 | 8×25 | 8×30 | 12×29 | 12×32 | |
| 150LB | 386 | 435 | 483 | 587 | 673 | 767 | 955 | |
| H | 300LB | 417 | 460 | 526 | 650 | 694 | 824 | 987 |
| 600LB | 427 | 473 | 538 | 657 | / | 872 | 1101 | |
| 150LB | 200 | 200 | 250 | 250 | 300 | 300 | 350 | |
| W | 300LB | 200 | 250 | 250 | 250 | 300 | 350 | 450 |
| 600LB | 250 | 250 | 300 | 350 | / | 500 | 650 | |
