Forged steel bellows seal gate valve is generally of small diameter, from DN15 to DN50.
It can be used in some high-pressure steam pipelines.
Advantage
Why forged steel bellow seal gate valve much better in high pressure steam pipelines?
1, Forged steel bellow seal gate valve use the forging process.
The process of forging is better than that of casting, but the cost will be higher.
2, The Forging progress has no sand holes, so it is more resistant to high pressure and high temperature.
3, , which is more corrosion resistant and have a longer service life.
4, bellow seal gate valves are lighter than normal gate valve in open and off.
Technical specification
Face to face : DIN3202,ANSI,GB
Flange ends: DIN2543-2546, ANSI,GB
Design standard: DIN, GB, ANSI
Test& inspection: DIN3230,GB,ANSI
| Nominal Pressure | PN | ||
| Pressure test | Strength test | 2PN | MPa |
| Sealing test | 1.5PN | ||
| Gas seal test | 0.8 | ||
| — | — | ||
| Temputer | -20℃~425℃ | ||
Main Material(mostly) it can OEM
| NO. | Part name | Material |
| 1 | Body | A105,F304,F316 |
| 2 | Seat | F304 |
| 3 | Disc | 2Cr13、Stl、507L |
| 4 | Pin | 2Cr13 |
| 5 | Bellows | SS321、SS316 ETC |
| 6 | Stem | 1.4401、2Cr13 |
| 7 | Gasket | Flexible graphite + stainless steel |
| 8 | Cover | GS-C25、、1.4401、SS321,SS304 |
| 9 | Nut | ASTM 194-2H、A194-8 |
| 10 | Double-headed bolt | ASTM 194-B7、A193-B8 |
| 11 | Packing | BY Ply-wooden case |
| 12 | Gland | GS-C25、1.4301、1.4401 |
| 13 | Locator | 1C25 |
| 14 | Stem nut | Copper alloy、D2、BL2 |
| 15 | Hand wheel | KTH330-08 |
| 16 | Cap | 1C45 |
Connection Size (DN15-DN350)
