Overview of Below Seal Globe Valve
The below seal globe valve is designed specifically for efficient control in steam and hot oil pipelines. Its innovative design ensures minimal leakage, making it ideal for high-stakes environments such as the pharmaceutical and new energy sectors.
Advantage
Why bellow seal globe valves are more tightly sealed than normal globe valve,
1, bellow seal globe valves have double seals (bellows +padding), normal globe valve only have padding seal.
2, Disc with scraping effect, so it has a longer service life.
3, The inside seals bellows are all made by stainless steel 321, which is more corrosion resistant and have a longer service life.
4, bellow seal globe valves are lighter than normal globe valve in open and off.
Specification
Technical specification
Face to face :DIN3202
Flange ends: DIN2543-2546
Design standard: DIN
Test& inspection: DIN3230
| Nominal Pressure | PN | ||
| Pressure test | Strength test | 1.4PN | MPa |
| Sealing test | 1.0PN | ||
| Gas seal test | 0.5 | ||
| — | — | ||
| Temperature | -20℃~425℃ | ||
Main Material(mostly) it can OEM
| NO. | Part name | Material |
| 1 | Body | 1.4401、SS321,SS304 |
| 2 | Seat | 1.4301、Stl |
| 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)
| PN 16 | ||||||||
| DN | Main connection size | |||||||
| L | D | D1 | D2 | b | f | H | n-Φd | |
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 197 | 4-Φ14 |
| 20 | 150 | 105 | 75 | 58 | 18 | 2 | 197 | 4-Φ14 |
| 25 | 160 | 115 | 85 | 68 | 18 | 2 | 205 | 4-Φ14 |
| 32 | 180 | 140 | 100 | 78 | 18 | 2 | 208 | 4-Φ18 |
| 40 | 200 | 150 | 110 | 88 | 18 | 3 | 230 | 4-Φ18 |
| 50 | 230 | 165 | 125 | 102 | 20 | 3 | 233 | 4-Φ18 |
| 65 | 290 | 185 | 145 | 122 | 22 | 3 | 254 | 4-Φ18 |
| 80 | 310 | 200 | 160 | 138 | 24 | 3 | 277 | 8-Φ18 |
| 100 | 350 | 235 | 180 | 158 | 24 | 3 | 365 | 8-Φ18 |
| 125 | 400 | 250 | 210 | 188 | 26 | 3 | 392 | 8-Φ18 |
| 150 | 480 | 285 | 240 | 212 | 28 | 3 | 420 | 8-Φ22 |
| 200 | 600 | 340 | 295 | 268 | 34 | 3 | 580 | 12-Φ22 |
| 250 | 650 | 405 | 355 | 320 | 33 | 3 | 750 | 12-Φ25 |
| 300 | 750 | 460 | 410 | 375 | 33 | 4 | 925 | 12-Φ25 |
| 350 | 850 | 520 | 470 | 435 | 34 | 4 | 1030 | 16-Φ25 |
| PN 25 | ||||||||
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 197 | 4-Φ14 |
| 20 | 150 | 105 | 75 | 58 | 18 | 2 | 197 | 4-Φ14 |
| 25 | 160 | 115 | 85 | 68 | 18 | 2 | 205 | 4-Φ14 |
| 32 | 180 | 140 | 100 | 78 | 18 | 2 | 208 | 4-Φ18 |
| 40 | 200 | 150 | 110 | 88 | 18 | 3 | 230 | 4-Φ18 |
| 50 | 230 | 165 | 125 | 102 | 20 | 3 | 233 | 4-Φ18 |
| 65 | 290 | 185 | 145 | 122 | 22 | 3 | 254 | 8-Φ18 |
| 80 | 310 | 200 | 160 | 138 | 24 | 3 | 277 | 8-Φ18 |
| 100 | 350 | 235 | 190 | 162 | 24 | 3 | 355 | 8-Φ22 |
| 125 | 400 | 270 | 220 | 188 | 26 | 3 | 410 | 8-Φ26 |
| 150 | 480 | 285 | 240 | 212 | 28 | 3 | 420 | 8-Φ26 |
| 200 | 600 | 340 | 310 | 278 | 30 | 3 | 540 | 12-Φ26 |
| 250 | 650 | 405 | 355 | 335 | 32 | 3 | 750 | 12-Φ30 |
| 300 | 750 | 460 | 410 | 375 | 34 | 4 | 925 | 16-Φ30 |
| 350 | 850 | 520 | 470 | 435 | 34 | 4 | 1030 | 16-Φ33 |
| PN 40 | ||||||||
| 15 | 130 | 95 | 65 | 45 | 16 | 2 | 195 | 4-Φ14 |
| 20 | 150 | 105 | 75 | 58 | 18 | 2 | 195 | 4-Φ14 |
| 25 | 160 | 115 | 85 | 68 | 18 | 2 | 207 | 4-Φ14 |
| 32 | 160 | 140 | 100 | 68 | 18 | 2 | 218 | 4-Φ18 |
| 40 | 180 | 150 | 110 | 78 | 18 | 3 | 225 | 4-Φ18 |
| 50 | 230 | 165 | 125 | 102 | 20 | 3 | 230 | 4-Φ18 |
| 65 | 290 | 185 | 145 | 122 | 22 | 3 | 272 | 8-Φ18 |
| 80 | 310 | 200 | 160 | 138 | 24 | 3 | 290 | 8-Φ18 |
| 100 | 350 | 235 | 190 | 162 | 24 | 3 | 355 | 8-Φ22 |
| 125 | 400 | 270 | 220 | 188 | 26 | 3 | 410 | 8-Φ26 |
| 150 | 480 | 300 | 250 | 218 | 28 | 3 | 425 | 8-Φ26 |
| 200 | 600 | 340 | 310 | 278 | 34 | 3 | 540 | 12-Φ30 |
