This series of pressure reducing valve belongs to the pilot piston type pressure reducing valve. By the main valve and pilot valve two parts. Main valve mainly by the valve seat, the main valve plate, piston, spring and other parts of the composition. The pilot valve is mainly composed of valve seat, valve, diaphragm, spring, adjusting spring and so on. This product has made a great improvement on the basis of ordinary pressure reducing valve, the piston area has been increased, and the throttle structure has changed. Change the sealing form, increase the flow area and so on, in order to improve the sensitivity, flow, life and other aspects greatly improved performance. This product is mainly used in steam pipeline, which is suitable for large flow rate change and large inlet pressure change.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.
Part name | 零件材料 |
The valve body valve cover Gaidi | WCB |
Valve seat valve | 2Cr13 |
Cylinder piston | Aluminum iron bronze |
diaphragm | 1Cr18Ni9 |
Piston ring | Alloy cast iron / polystyrene |
Guide valve stem | 2Cr13 |
Main valve spring | 50CrVA |
Pilot valve main spring | 50CrVA |
Regulating spring | 60Si2Mn |
Nominal pressure(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
Shell test pressure(Mpa)* | 2.4 | 3.75 | 6.0 | 9.6 | 15.0 | 24 |
Seal test pressure(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
inlet pressure(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
Outlet pressure range(Mpa) | 0.04-1.0 | 0.05-1.6 | 0.08-2.5 | 0.2-3.5 | 0.5-3.5 | 0.5-4.5 |
Pressure characteristic deviation(Mpa)△P2P | GB12246-1989 |
Flow characteristic deviation(Mpa)P2G | GB12246-1989 |
difference(Mpa) | 0.07 | 0.1 | 0.15 | 0.4 | 0.5 | 0.8 |
Seepage quantity | GB12245-1989 |
Nominal diameter DN | Outline dimension |
L | H | Hl |
1.6/2.5MPa | 4.0MPa |
15 | 160 | 180 | 265 | 85 |
20 | 160 | 180 | 265 | 85 |
25 | 180 | 200 | 280 | 95 |
32 | 200 | 220 | 280 | 95 |
40 | 220 | 240 | 290 | 105 |
50 | 250 | 270 | 300 | 130 |
65 | 280 | 300 | 315 | 145 |
80 | 310 | 330 | 330 | 170 |
100 | 350 | 380 | 405 | 200 |
125 | 400 | 450 | 450 | 225 |
150 | 450 | 500 | 485 | 265 |
200 | 500 | 550 | 570 | 290 |
250 | 650 | 640 | 325 |
300 | 800 | 740 | 360 |
350 | 850 | 810 | 395 |
400 | 900 | 950 | 430 |
500 | 950 | 1080 | 500 |
(PN6.4-16.0) Company:mm:
Nominal diameter DN | Outline dimension |
L | H | Hl |
6.4MPa | 10.0/16.0MPa |
15 | 180 | 180 | 280 | 100 |
20 | 180 | 200 | 280 | 100 |
25 | 200 | 220 | 300 | 115 |
32 | 220 | 230 | 300 | 115 |
40 | 240 | 240 | 315 | 130 |
50 | 270 | 300 | 340 | 135 |
65 | 300 | 340 | 355 | 150 |
80 | 330 | 360 | 370 | 175 |
100 | 380 | 450 | 205 |
125 | 450 | 510 | 235 |
150 | 500 | 555 | 275 |
200 | 550 | 640 | 300 |
250 | 650 | 720 | 335 |
300 | 800 | 830 | 375 |
350 | 850 | 880 | 410 |
400 | 900 | 1020 | 445 |
500 | 950 | - | 1080 | 515 |