Pneumatic membrane cut-off valve development since the beginning of twentieth Century has been eighty years of history, has produced ten major categories of valve products, self operated valve and positioner, following development process valve and control valve: This valve shall generally be installed horizontally in the pipeline.
Valve body, sealing sleeve：HT200、ZG230-450 ZG1Cr18Ni9Ti ZGOCr18Ni12M02Ti
Valve core and valve seat：1Cr18Ni9Ti OCr18Ni12M02Ti 1Cr18Ni9TiOur silk and Chatterley surfacing EBR> Sleeve, valve plug：1Cr18Ni9Ti OCr18Ni12M02Ti 1Cr18Ni9TiWelding division is too vegetable and silk EBR>Ernst E materials: PTFE, flexible graphite
Corrugated diaphragm：Ding Chou rubber polyester fabric reinforced.EBR> Spring：60Si2Mn
Stem, push rod：2Cr13、1Cr18Ni9Ti
Valve, valve Qu E in gill piece)：Reinforced PTFE
corrugated pipe：1Cr18Ni9Ti
|
Nominal diameter
|
15
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
|
A
|
E196
|
E232
|
E308
|
E394
|
E498
|
|
L
|
PN16 、 40
|
130
|
150
|
160
|
180
|
200
|
230
|
290
|
310
|
350
|
400
|
480
|
600
|
|
|
PN64
|
210
|
230
|
230
|
260
|
260
|
300
|
340
|
380
|
430
|
500
|
550
|
650
|
|
H
|
PN16 、 40
|
305
|
340
|
345
|
370
|
380
|
390
|
475
|
490
|
500
|
765
|
825
|
927
|
|
|
PN64
|
320
|
350
|
354
|
372
|
382
|
397
|
473
|
475
|
517
|
805
|
882
|
815
|
|
|
Bellows seal type
|
375
|
409
|
414
|
431
|
441
|
468
|
555
|
570
|
613
|
855
|
915
|
1017
|
|
H 1
|
PN16 、 40
|
50
|
53
|
58
|
70
|
75
|
83
|
93
|
100
|
110
|
125
|
143
|
170
|
|
|
PN64
|
60
|
65
|
70
|
77.5
|
85
|
90
|
100
|
85
|
125
|
148
|
170
|
208
|
|
H 2
|
PN16
|
115
|
115
|
121
|
130
|
140
|
153
|
178
|
190
|
200
|
260
|
320
|
360
|
|
|
PN40
|
125
|
125
|
130
|
140
|
150
|
160
|
185
|
200
|
220
|
280
|
320
|
380
|
|
|
PN64
|
150
|
150
|
160
|
170
|
180
|
200
|
230
|
250
|
282
|
310
|
430
|
480
|
|
H 3
|
PN16 、 40
|
404
|
415
|
428
|
448
|
468
|
561
|
578
|
590
|
886
|
1008
|
1120
|
|
|
|
PN64
|
365
|
430
|
498
|
528
|
528
|
530
|
535
|
540
|
600
|
890
|
1208
|
1305
|
|
|
Bellows seal type
|
395
|
465
|
478
|
509
|
509
|
548
|
641
|
658
|
670
|
976
|
1098
|
1210
|
|
weight
(kg)
|
TD>
|
10
|
10
|
12
|
15
|
18
|
23
|
35
|
45
|
60
|
75
|
90
|
120
|
|
|
Bellows seal type
|
12
|
12
|
14
|
17
|
20
|
26
|
38
|
48
|
64
|
79
|
95
|
125
|
|
Nominal diameter DN(mm)
|
15
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
|
I scoop flow
coefficient KV
|
Single seat, double LiE/TD>
|
5
|
7
|
11
|
20
|
30
|
48
|
75
|
120
|
190
|
300
|
480
|
760
|
|
|
Sleeve
|
|
11
|
20
|
30
|
48
|
75
|
120
|
190
|
300
|
480
|
760
|
|
Nominal pressure PN(MPa)
|
1.0 1.6 4.0 6.4
|
|
Seoul scoop trip (mm)
|
8
|
12
|
20
|
25
|
40
|
50
|
|
|
|
effective area
(c m 2 )
|
ZMQ type
|
100
|
200
|
400
|
600
|
1000
|
|
|
|
|
|
|
ZSQ type
|
100
|
125
|
160
|
250
|
|
|
|
|
Yun Zhan Xuan
Leakage
|
Cheng hard.E1/h
|
-A: 10 -4 X valve scoop capacity; tight type: single seat: 1.2X10 -7, 5X10 -6 X sleeve valve scoop capacity
|
|
|
Gill's ChengE/TD>
|
VIlevel
|
|
Yun Hua years of age and noiseE
(MPa)
|
ZMQ P N Positive effect
|
6.4
|
5.09
|
2.91
|
1.85
|
2.18
|
1.33
|
1.52
|
0.99
|
0.62
|
0.60
|
0.69
|
0.39
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ZMQ P N Counter action
|
6.4
|
6.4
|
3.88
|
2.47
|
2.91
|
1.77
|
2.03
|
1.32
|
0.83
|
0.80
|
0.92
|
0.52
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ZSQ P N
|
6.4
|
6.1
|
3.5
|
2.3
|
3.0
|
1.9
|
1.9
|
1.5
|
0.93
|
0.84
|
0.65
|
0.47
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Z M S QM
|
Nominal pressure
|
|
Signal pressure
(kPa)
|
ZMQ
|
0 Inferior riceE250
|
|
|
ZSQ
|
0 Inferior riceE400 ～ 600
|
Regulating valve is usually composed of electric actuator or pneumatic actuator and valve body two parts. Straight travel mainly through single seat type and through engine type two, which have large flow capacity, unbalanced and stable operating characteristics, so it is usually suitable for high flow, low pressure drop and leakage occasions. Angular travel: V type electric control valve, pneumatic diaphragm valve, eccentric butterfly valve, etc..
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