Electric Vacuum Butterfly Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Manual metal hard-sealed wafer butterfly valves
The introduction of product
DK941X electric vacuum butterfly valve works as a closed-circuit equipment, are used in the low vacuum pipelines of non-corrosive saturated steam. DK941X electric vacuum butterfly valve is sealed butterfly valve, the both ends shaft sealing is sealed by 0.25MPa pressure water sealing, to ensure the shaft seal not leak. The structure of DK941X electric vacuum valve is double seats forms, between the two seats and shaft are both sealed by the combination of rubber seal and pressure water (pressure value is 0.25MPa). And If customers require, we can install heating device in the body wall.
Dimensions & constructral diagram
Manual metal hard-sealed wafer butterfly valve constructral diagram(pic1)
Manual metal hard-sealed wafer butterfly valve constructral diagram(pic2)
Main technical parameter
| model | Ds9D41X-2.5C | Ds9D41XF-2.5C | ||
| nominal pressure（MPa） | 0.25 | 0.25 | ||
| test pressure（MPa） | intensity test | 0.4 | 0.4 | |
| sealing test | 0.275 | 0.275 | ||
| working pressure（MPa） | 0.25 | 0.25 | ||
| applicable medium | non-corrosive saturated steam | |||
| suitable temperature℃ | ≤120 | ≤200 | ||
| vacuum leakage rate | ≤6.67×10-2PaM3S-1 | |||
| flange connection dimension standard | GB2555～2556-81 | |||
| pressure test standard | GB/T13927-92 | |||
The materials of main parts
| part name | body,disc | shaft,sealing seat | disc sealing ring |
| materials | Q235-A、F steel plate | 2Cr13、1Cr18Ni9Ti | EPDM, fluororubber |
The main external and connection dimensions of DK941X(unit：mm)
| DN | D | D1 | D2 | L | n-d | b | f | A | B | H |
| 1000 | 1170 | 1120 | 1080 | 305 | 28-30 | 42 | 5 | 590 | 980 | 2230 |
| 1200 | 1375 | 1320 | 1280 | 381 | 32-30 | 44 | 5 | 590 | 980 | 2476 |
| 1400 | 1575 | 1520 | 1480 | 381 | 36-30 | 46 | 5 | 630 | 1117 | 2793 |
| 1600 | 1790 | 1730 | 1690 | 457 | 40-30 | 48 | 5 | 630 | 1117 | 2850 |
| 1800 | 1990 | 1930 | 1890 | 457 | 44-30 | 50 | 5 | 850 | 1480 | 3187 |
| 2000 | 2190 | 2130 | 2090 | 540 | 48-30 | 52 | 5 | 850 | 1480 | 3310 |
| 2200 | 2405 | 2340 | 2295 | 590 | 52-33 | 56 | 6 | 850 | 1554 | 3915 |
| 2400 | 2605 | 2540 | 2495 | 650 | 56-33 | 60 | 6 | 850 | 1554 | 4187 |
| 2600 | 2805 | 2740 | 2695 | 700 | 60-33 | 64 | 6 | 1533 | 1435 | 4409 |
| 2800 | 3030 | 2960 | 2910 | 760 | 64-36 | 66 | 6 | 1585 | 1837 | 4760 |
| 3000 | 3230 | 3160 | 3110 | 810 | 68-36 | 70 | 6 | 1585 | 1837 | 5008 |
