Usage and Characteristics
- This valve is primarily used in pipeline systems of high-rise buildings, industrial and mining enterprises, as well as pharmaceutical and food industries, to reduce the high upstream pressure to the required downstream operating pressure.
- The fixed outlet pressure of the valve can be controlled, ensuring that the outlet pressure is not affected by changes in inlet pressure or flow rate, thus achieving reliable pressure reduction. Moreover, precise and stable outlet pressure can be obtained simply by adjusting the pilot valve's regulating screw.


Diaphragm type
Product Specifications
① Main material: carbon steel, stainless steel, alloy steel
② Nominal diameter: DN50 to DN1600
③ Pressure range: 1.0MPa~2.5MPa
④ Operating temperature: -29℃~+100℃
⑤ Drive mode: Automatic
⑥ Application scope: It can be applied to tap water, sewage, construction, food, electricity, medicine, metallurgy, light textile, energy, etc.
Installation Schematic



Piston
Note:
The installation diagram may include either an elastic-sealed gate valve or a butterfly valve, with the latter recommended for DN350 and above.
Main size data
| DN | L | D | D1 | N-d | H | ||||||
| 1.0MPa | 1.6MPa | 2.5MPa | 1.0MPa | 1.6MPa | 2.5MPa | 1.0MPa | 1.6MPa | 2.5MPa | |||
| 50 | 205 | 165 | 165 | 165 | 125 | 125 | 125 | 4-18 | 4-18 | 4-18 | 300 |
| 65 | 216 | 185 | 185 | 185 | 145 | 145 | 145 | 4-18 | 4-18 | 8-18 | 337 |
| 80 | 250 | 200 | 200 | 200 | 160 | 160 | 160 | 8-18 | 8-18 | 8-18 | 467 |
| 100 | 320 | 220 | 220 | 235 | 180 | 180 | 190 | 8-18 | 8-18 | 8-22 | 520 |
| 125 | 365 | 250 | 250 | 270 | 210 | 210 | 220 | 8-18 | 8-18 | 8-22 | 580 |
| 150 | 415 | 285 | 285 | 300 | 240 | 240 | 250 | 8-22 | 8-22 | 8-26 | 640 |
| 200 | 500 | 340 | 340 | 360 | 295 | 295 | 310 | 8-22 | 12-22 | 12-26 | 778 |
| 250 | 605 | 395 | 405 | 425 | 350 | 355 | 370 | 12-22 | 12-26 | 12-30 | 889 |
| 300 | 698 | 445 | 460 | 485 | 400 | 410 | 430 | 12-22 | 12-26 | 12-30 | 1010 |
| 350 | 787 | 505 | 520 | 555 | 460 | 470 | 490 | 16-22 | 16-26 | 16-30 | 1037 |
| 400 | 914 | 565 | 580 | 620 | 515 | 525 | 550 | 16-26 | 16-30 | 16-33 | 1264 |
| 450 | 978 | 615 | 640 | 670 | 565 | 585 | 600 | 20-26 | 20-30 | 16-36 | 1294 |
| 500 | 978 | 670 | 715 | 730 | 620 | 650 | 660 | 20-26 | 20-33 | 20-36 | 1324 |
| 600 | 1150 | 780 | 840 | 845 | 725 | 770 | 770 | 20-30 | 20-36 | 20-39 | 1600 |
| 700 | 1300 | 895 | 910 | 960 | 840 | 840 | 875 | 24-30 | 24-36 | 24-42 | 1750 |
| 800 | 1450 | 1015 | 1025 | 1085 | 950 | 950 | 990 | 24-33 | 24-39 | 24-48 | 1900 |
| 900 | 1650 | 1115 | 1125 | 1050 | 1050 | 28-33 | 28-39 | 2100 | |||
| 1000 | 1800 | 1230 | 1485 | 1160 | 1170 | 28-36 | 28-42 | 2400 | |||
| 1200 | 2000 | 1455 | 1380 | 32-39 | 2860 | ||||||
| 1400 | 2350 | 1675 | 1530 | 36-42 | 3200 | ||||||
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