Pilot piston gas pressure reducing valve is an automatic regulating valve used in gas pipelines (such as air, nitrogen, hydrogen, etc.). It drives the main valve piston to move by sensing the change in outlet pressure through the pilot valve, adjusts the opening of the main valve, achieves pressure reduction of high-pressure inlet gas, and maintains stable outlet pressure.
Part Name | Material | Part Name | Material |
Valve body, valve cover, bottom cover | WCB | Guide valve seat and guide valve stem | 2Cr13 |
Valve seat disc | 2Cr13 | diaphragm | 1Cr18Ni9Ti |
cylinder liner | 2Cr13/25 (hard chrome plating) | Main valve spring | 50CrVA |
piston | 2Cr13/copper alloy | Main spring of pilot valve | 50CrVA |
piston ring | alloy cast iron | adjusting spring | 60Si2Mn |
Nominal Diameter DN(mm) | Overall dimensions | |||
L | H | H1 | ||
1.6 | 4.0MPa | |||
15 | 160 | 180 | 295 | 90 |
20 | 160 | 180 | 330 | 98 |
25 | 180 | 200 | 330 | 110 |
32 | 200 | 220 | 330 | 110 |
40 | 220 | 240 | 345 | 125 |
50 | 250 | 270 | 345 | 125 |
65 | 280 | 300 | 350 | 130 |
80 | 310 | 330 | 385 | 160 |
100 | 350 | 380 | 385 | 170 |
125 | 400 | 450 | 400 | 200 |
150 | 450 | 500 | 415 | 210 |
200 | 500 | 550 | 475 | 240 |
250 | 650 | 650 | 525 | 290 |
300 | 800 | 800 | 580 | 335 |
350 | 850 | 850 | 620 | 375 |
400 | 900 | 900 | 660 | 405 |
450 | 900 | 900 | 730 | 455 |
500 | 950 | 950 | 750 | 465 |
Nominal Diameter DN(mm) | Overall dimensions | |||
L | H | H1 | ||
6.4MPa | 10.0/ | |||
15 | 180 | 180 | 305 | 100 |
20 | 180 | 200 | 340 | 105 |
25 | 200 | 220 | 340 | 120 |
32 | 220 | 230 | 340 | 120 |
40 | 240 | 240 | 355 | 135 |
50 | 270 | 300 | 355 | 135 |
65 | 300 | 340 | 360 | 140 |
80 | 330 | 360 | 395 | 170 |
100 | 380 | 380 | 400 | 185 |
125 | 450 | 450 | 415 | 215 |
150 | 500 | 500 | 430 | 225 |
200 | 550 | 550 | 495 | 260 |
250 | 650 | 650 | 545 | 310 |
300 | 800 | 800 | 600 | 355 |
350 | 850 | 850 | 640 | 395 |
400 | 900 | 900 | 690 | 435 |
500 | 950 | 780 | 495 | |
Nominal Diameter DN(mm) | Cv |
15 | 1 |
20 | 2.5 |
25 | 4 |
32 | 6.5 |
40 | 9 |
50 | 16 |
65 | 25 |
80 | 36 |
100 | 64 |
125 | 100 |
150 | 140 |
200 | 250 |
250 | 400 |
300 | 570 |
350 | 780 |
400 | 1020 |
500 | 1500 |
Note: The above data is for reference only. For details, please consult the company's sales department.
Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.
The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.
High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.
Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.
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