First, 200X-type pressure reducing valve (adjustable pressure reducing valve) Structural features and uses:
200X pressure reducing valve (adjustable pressure reducing valve) from
the main valve, pilot valve, needle valve, ball valve, miniature filter
and pressure gauge Composition of hydraulic control system. When used,
when adjusted after the outlet pressure, can automatically maintain a
stable outlet pressure.
200X pressure reducing valve utilizes pilot valve self-control, does
not require other devices and energy, easy maintenance, high pressure
control accuracy, pressure and flow by the import of small, reliable
decompression and voltage regulator.
200X valve products are widely used in high-rise buildings, living
areas and other water supply pipe network systems and urban water supply
projects.
Second, 200X-type pressure reducing valve (adjustable pressure reducing valve) Working principle:
When the valve from the inlet side of the water, the water flow
through the needle valve into the main valve control room, the outlet
pressure through the conduit to the pilot valve. When the outlet
pressure is higher than the set value of the pilot valve, the pilot
valve is closed. Control room to stop drainage, then the main valve
control room pressure and shut off the main valve, the outlet pressure
is no longer increased.
When the valve outlet pressure drops to set the pilot valve spring
pressure, pilot valve open, the control room to the downstream
drainage. As the pilot valve system displacement is greater than the
needle valve inlet, the main valve control room pressure drop. Import
pressure to open the main valve. In a steady state, the control room
water, the same drainage, the main valve opening unchanged, the outlet
pressure is stable. Adjust pilot valve spring to set outlet pressure.
Third, 200X-type valve main technical parameters:
|
Nominal pressure (Mpa) |
Shell test pressure (MPa) |
Seal test pressure (MPa) |
The maximum inlet pressure (MPa) |
Export adjustable pressure (MPa) |
Suitable media |
Medium temperature (℃) |
|
1.0 |
1.5 |
1.1 |
1.0 |
0.09-0.8 |
water |
0-80 |
|
1.6 |
2.4 |
1.76 |
1.6 |
0.10-1.2 |
||
|
2.5 |
3.75 |
2.75 |
2.5 |
0.15-1.6 |
Fourth, 200X-type valve main parts material:
|
Part Name |
Parts and materials |
|
Body valve cover |
WCB |
|
Valve seat disc |
Copper alloy |
|
O-ring seals |
Nitrile rubber |
|
Valve stem |
2Cr13 |
|
spring |
50CrVA |
|
Needle valve |
Copper alloy |
|
Ball valve |
Copper alloy |
|
Pilot valve |
Copper alloy |
|
Micro filter |
stainless steel |
Fifth, 200X pressure reducing valve connection size (PN 1.0-2.5MPa):
|
Nominal diameter DN |
L |
H |
H1 |
A |
B |
|
50 |
250 |
335 |
90 |
170 |
170 |
|
65 |
280 |
345 |
98 |
180 |
180 |
|
80 |
310 |
355 |
110 |
190 |
190 |
|
100 |
350 |
365 |
120 |
200 |
200 |
|
125 |
400 |
445 |
145 |
215 |
215 |
|
150 |
450 |
460 |
155 |
230 |
230 |
|
200 |
550 |
505 |
190 |
255 |
255 |
|
250 |
650 |
550 |
250 |
295 |
295 |
|
300 |
800 |
710 |
290 |
325 |
325 |
|
350 |
900 |
725 |
330 |
380 |
380 |
|
400 |
1000 |
760 |
360 |
415 |
415 |
|
450 |
1000 |
810 |
445 |
435 |
435 |
|
500 |
1100 |
865 |
495 |
460 |
460 |
|
600 |
1100 |
935 |
550 |
520 |
520 |
|
700 |
1450 |
1000 |
605 |
570 |
570 |
|
800 |
1560 |
1100 |
730 |
620 |
620 |
|
900 |
1800 |
1205 |
800 |
670 |
670 |
|
1000 |
2000 |
1330 |
910 |
830 |
830 |
