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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(℃) | Media used |
1.6 | 2.4 | 1.76 | ≤350℃ | 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 |