Vacuum partition manual gate valve is an isolation valve specifically designed for vacuum or negative pressure systems, which achieves complete sealing or opening by manually driving the gate to move vertically. Its core design is a metal hard seal or fluororubber soft seal structure, which can withstand high vacuum (≤ 10 ^ -6 Pa level) environments, with no leakage risk when cutting off medium flow. It is suitable for laboratory, semiconductor manufacturing, vacuum equipment and other scenarios, and has the characteristics of corrosion resistance, long life, and low opening and closing torque.






Part Name | Valve body and valve cover | valve stem | ram | sealing surface | stem nut | filler | fastener | |
NKZ44 | 1H-C type | WCB | 2Cr12 | 25 | H: Alloy steel | aluminum bronze | expansion | high-quality carbon steel |
NKZ44 | Y-I type | chromium-molybdenum steel | 20Cr1Mo1VA | chromium-molybdenum steel | Y: Hard alloy | chromium-molybdenum steel | ||

Nominal Diameter DN(mm) | PN1.0MPa | Weight | ||||||||
L | H | D | D1 | D2 | b | f | z-Φd | W | ||
50 | 250 | 345 | 160 | 125 | 100 | 16 | 3 | 4-18 | 250 | 28 |
65 | 270 | 395 | 180 | 145 | 120 | 18 | 3 | 4-18 | 250 | 40 |
80 | 280 | 425 | 195 | 160 | 135 | 20 | 3 | 4-18 | 300 | 55 |
100 | 300 | 510 | 215 | 180 | 155 | 20 | 3 | 8-18 | 300 | 72 |
125 | 325 | 570 | 245 | 210 | 185 | 22 | 3 | 8-18 | 350 | 106 |
150 | 350 | 725 | 280 | 240 | 210 | 24 | 3 | 8-18 | 350 | 146 |
200 | 400 | 820 | 335 | 295 | 265 | 26 | 3 | 8-18 | 400 | 220 |
250 | 450 | 890 | 390 | 350 | 320 | 28 | 3 | 12-23 | 400 | 315 |
300 | 500 | 1070 | 440 | 400 | 368 | 28 | 3 | 12-23 | 450 | 398 |
350 | 550 | 1320 | 500 | 460 | 428 | 30 | 4 | 16-23 | 550 | 530 |
400 | 600 | 1450 | 565 | 515 | 482 | 32 | 4 | 16-25 | 550 | 690 |
450 | 650 | 1560 | 615 | 565 | 532 | 32 | 4 | 20-25 | 600 | 870 |
500 | 700 | 1720 | 670 | 620 | 585 | 34 | 4 | 20-25 | 650 | 1080 |
600 | 800 | 1880 | 780 | 725 | 685 | 36 | 5 | 20-30 | 700 | 1350 |
700 | 900 | 2085 | 895 | 840 | 800 | 40 | 5 | 24-30 | 750 | 1950 |
800 | 1000 | 2590 | 1010 | 950 | 905 | 44 | 5 | 24-34 | 800 | 2500 |
Note: The pressure range is 1. OMPa~16.0MPa. The above data is for reference only. Please consult the company's sales department for details.
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