Features of dw41jh bellows stop valve
1. The product has reasonable structure, reliable sealing, excellent performance and beautiful appearance;
2. The sealing surface overlaid with Co based cemented carbide has good wear resistance, corrosion resistance, friction resistance and long service life;
3. The valve stem has good anti-corrosion and anti friction properties by quenching and tempering and surface nitriding treatment;
4. Double seal, more reliable performance;
5. Valve stem lifting position indication, more intuitive;
6. Parts material and flange, butt welding end size can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.
Main performance specifications
| Nominal pressure£¨MPa£© | Shell test pressure£¨MPa£© | Sealing test pressure£¨MPa£© | Applicable temperature£¨¡æ£© | Media used |
| 1.6 | 2.4 | 1.76 | ¡Ü350¡æ | Water, steam, oil, etc |
| 2.5 | 3.75 | 2.75 | ||
| 4.0 | 6.0 | 4.4 | ||
| 6.4 | 9.6 | 7.04 |
Materials of main parts of dwj41h German standard BELLOWS GLOBE VALVE
| Serial number | name | texture of material |
| 1 | valve body | GS-C25 1.73631.4308¡¢1.4408¡¢1.4306¡¢1.4301 |
| 2 | Valve disc | ASTM A182-Gr.F6a ASTM A-182-F22ASTM A182-F304¡¢F316¡¢F321¡¢F304L¡¢F316L |
| 3 | Pivot pin | ASTM A182-Gr.F6a ASTM A-182-F22ASTM A182-F304¡¢F316¡¢F321¡¢F304L¡¢F316L |
| 4 | Bellows assembly | 1Cr18Ni9Ti¡¢304¡¢316 |
| 5 | Stem | ASTM A182-Gr.F6a ASTM A-182-F22ASTM A182-F304¡¢F316¡¢F321¡¢F304L¡¢F316L |
| 6 | Valve cover | GS-C25 1.73631.4308¡¢1.4408¡¢1.4306¡¢1.4301 |
| 7 | filler | Flexible graphite¡¢PTFE |
| 8 | Packing gland | GS-C25 1.73631.4308¡¢1.4408¡¢1.4306¡¢1.4301 |
| 9 | Positioning film | 25¡¢45¡¢304¡¢316 |
| 10 | Stem nut | copper alloy ZQA19-4 |
| 11 | handwheel | WCB¡¢QT400-18 |
| 12 | Stud bolt | ASTM A193-B7¡¢A193-B8¡¢A193-B8M |
| 13 | Hexagon nut | ASTM A194-2H¡¢A194-8¡¢A194-8M |
| 14 | shim | Flexible graphite + stainless steel¡¢PTFE |
Main connection dimensions
| model | model | ||||||||||||||
| Pressure rating | PN16 | ||||||||||||||
| caliber | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 |
| H | 195 | 200 | 220 | 225 | 235 | 250 | 260 | 265 | 370 | 400 | 515 | 550 | 600 | 630 | 680 |
| W | 120 | 140 | 140 | 160 | 160 | 180 | 200 | 220 | 250 | 300 | 350 | 400 | 450 | 500 | 500 |
| weight£¨kg£© | 4 | 4.5 | 5 | 7 | 9 | 12.5 | 18 | 23 | 41 | 54 | 90 | 160 | 260 | 410 | 610 |
| model | DWJ41-25 | ||||||||||||||
| Pressure rating | PN25 | ||||||||||||||
| caliber | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 |
| H | 195 | 200 | 220 | 225 | 235 | 250 | 260 | 265 | 370 | 400 | 515 | 550 | 600 | 630 | 680 |
| W | 120 | 120 | 140 | 160 | 160 | 180 | 200 | 220 | 250 | 300 | 350 | 400 | 450 | 500 | 500 |
| weight£¨kg£© | 4 | 4.5 | 5 | 7.5 | 9.5 | 13 | 19 | 24 | 43 | 57 | 95 | 168 | 300 | 510 | 680 |
| model | DWJ41-40 | ||||||||||||||
| Pressure rating | PN40 | ||||||||||||||
| caliber | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 |
| H | 195 | 200 | 220 | 225 | 235 | 250 | 260 | 265 | 370 | 400 | 515 | 550 | 600 | 630 | 680 |
| W | 120 | 120 | 140 | 160 | 160 | 180 | 200 | 220 | 250 | 300 | 350 | 400 | 450 | 500 | 500 |
| weight£¨kg£© | 4 | 4.5 | 5 | 8 | 10 | 13.5 | 20 | 25 | 45 | 60 | 98 | 171 | 340 | 580 | 780 |
