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Structural characteristics and working principle of 200X pressure reducing and stabilizing valve

200X pressure reducing valve

Structural features and uses

The 200X pressure reducing pressure regulator is composed of a main valve, a pilot valve, a needle valve, a ball valve, a micro filter and a pressure gauge. In use, when the outlet pressure is adjusted, it can automatically maintain a stable outlet pressure.
This product uses pilot valve self-control, no other devices and energy are needed, easy maintenance, high accuracy of pressure control, little effect of inlet pressure and flow, reliable pressure reduction and voltage stabilization.
This series of valve products are widely used in high-rise buildings, living areas and other water supply pipe network systems and urban water supply projects.

working principle

When the valve feeds water from the inlet, water flows through the needle valve into the main valve control room, and the outlet pressure acts on the pilot valve through the conduit. When the outlet pressure is higher than the pilot valve spring setting, the pilot valve is closed. The control room stops draining. At this time, the main valve controls the pressure in the room to rise and closes the main valve. The outlet pressure no longer rises.
When the valve outlet pressure drops to the pressure set by the pilot valve spring, the pilot valve opens and the control room drains downstream. As the displacement of the pilot valve system is greater than the amount of water entering the needle valve, the pressure in the control room of the main valve drops. The inlet pressure opens the main valve. In a stable state, the inlet and outlet of the control room are the same, the opening degree of the main valve is unchanged, and the outlet pressure is stable.
Adjust the pilot valve spring to set the outlet pressure.


The main technical parameters
Nominal pressure (Mpa)
Shell test pressure (MPa)
Sealing test pressure (MPa)
Maximum inlet pressure (MPa)
Adjustable outlet pressure (MPa)
Applicable medium
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

Material of main parts
Part Name
Parts material
Body valve cover
WCB
Valve seat
Copper alloy
O-ring seal
Nitrile rubber
Valve stem
2Cr13
spring
50CrVA
Needle valve
Copper alloy
Ball valve
Copper alloy
Float valve
Copper alloy
Micro filter
stainless steel
Parts list:
1, pilot valve 2, main valve 3, ball valve 4, pressure gauge 5, needle gauge

Connection size
DN
L
A
A1
H
H1
F
D
mm
D1
mm
D2
mm
n-Φd
mm
mm
mm
mm
mm
mm
PN1.0

PN1.6

PN2.5
PN1.0

PN1.6

PN2.5
PN1.0

PN1.6

PN2.5
PN1.0

PN1.6

PN2.5
20
180
292
136
342
247
116
105
105
105
75
75
75
58
58
56
4-13.5
4-13.5
4-14
25
180
292
136
342
247
116
115
115
115
85
85
85
68
68
65
4-13.5
4-13.5
4-14
32
180
292
136
342
247
116
140
140
140
100
100
100
78
78
76
4-17.5
4-17.5
4-18
40
240
330
155
395
278
170
150
150
150
110
110
110
88
88
84
4-17.5
4-17.5
4-18
50
240
330
155
395
278
170
165
165
165
125
125
125
102
102
99
4-17.5
4-17.5
4-18
65
250
350
165
405
298
180
185
185
185
145
145
145
122
122
118
4-17.5
4-17.5
8-18
80
285
365
175
430
313
210
200
200
200
160
160
160
133
133
132
8-17.5
8-17.5
8-18
100
360
410
195
510
350
275
220
220
235
180
180
190
158
158
156
8-17.5
8-17.5
8-22
125
400
455
220
560
365
310
250
250
270
210
210
220
184
184
184
8-17.5
8-17.5
8-26
150
455
475
230
585
420
355
285
285
300
240
240
250
212
212
211
8-22
8-22
8-26
200
585
530
255
675
450
460
340
340
360
295
295
310
268
268
274
8-22
12-22
12-26
250
650
623
300
730
470
500
395
405
425
350
355
370
320
320
330
12-22
12-26
12-30
300
800
700
340
760
490
580
445
460
485
400
410
430
370
370
389
12-22
12-26
16-30
350
860
840
415
840
526
640
505
520
555
460
470
490
430
430
448
16-22
16-26
16-33
400
960
880
430
910
570
715
565
580
620
515
525
550
482
482
503
16-26
16-30
16-36
450
1075
930
460
1030
610
780
615
640
670
565
585
600
532
550
548
20-26
20-30
20-36
500
1075
980
490
1135
665
830
670
715
760
620
650
660
585
585
609
20-26
20-33
20-36
600
1230
1060
530
1270
725
920
780
840
845
725
770
770
685
685
720
20-30
20-36
20-39
700
1650
1130
560
1460
865
980
895
910
960
840
840
875
800
800
820
24-30
24-36
24-42
800
1750
1230
610
1640
975
1050
1015
1025
1085
950
950
990
905
905
928
24-33
24-39
24-48

Installation diagram

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Recording license: Shanghai ICP No. 12004584