Products > Control valve > Pneumatic piston cut-off valve

Pneumatic piston cut-off valve

Model: ZSPC
Nominal diameter: DN20-200mm
Nominal pressure: PN1.6 ~ 6.4MPa
Medium temperature: Soft seal: -40 ~ 150 ℃ (normal temperature type); Hard Seal: -40 ~ 200 ℃ 40 ~ 450 ℃ (medium temperature)
Main material: ZG230-450; ZG1Cr18NI9 Ti; ZG0Gr18N12Mo2Ti
Drive mode: pneumatic
Design criteria: GB / T17213
Flange standard: GB / T9113, JB / T79 , HG20594 and other standard
Inspection standards: GB / T4213
Connection Type: FF RF RTJ, Weld (SW BW), Thread (For 1 "or less)
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ZSPC pneumatic piston cut-off valve Overview:

ZSPC-type pneumatic piston room temperature, temperature cut-off valve, pneumatic piston actuator and cut off the composition of the machinery. According to the valve sealing surface material can be divided into hard seal and soft seal: According to the structure of the spool can be divided into single-oriented flat and single-guided balance. Has the characteristics of simple structure, reliable action, close, close fast. For non-particulate material, no impurities in the gas, liquid medium, requiring close close fast, quick emptying of the automatic control system.


 First, the model, specifications

model
Normal temperature
type hard seal
Normal temperature type of soft seal
Medium temperature type of hard seal
Std hard-tight 
seal with handwheel
Normal temperature type soft seal with hand wheel
Medium temperature type hard seal with hand wheel
model
ZSP NC1- 
( 16/64 ) BK
ZSP NC2- 
( 16/64 ) BK
ZSP NC1- 
(40/64) B KG
ZSPC1- 
( 16/64 ) BK
ZSPC2- 
( 16/64 ) BK
ZSPC1- 
(40/64) BK
specification
DN20-200


 Second, the main technical parameters and performance indicators 

  1, cut off the main technical parameters

Nominal pressure mm
20
25
40
50
65
80
100
150
200
Seat diameter mm
20
25
32
40
50
65
80
100
125
150
200
Rated flow coefficient Kv
6.5
10
15
25
40
65
100
125
260
350
540
Nominal pressure MPa
1.6; 4.0; 6.4
Travel mm
10
16
25
30
40
60
Flow characteristics
Go ahead
Medium temperature ℃
Soft seal: -40 ~ 150 (normal temperature type); Hard seal: -40 ~ 200 (normal temperature type), - 40 ~ 450 (medium temperature type)
Flange size, type
PN16 by JB78-59 smooth; PN40, 64 by JB / T79.2-94 concave
Body material
ZG230-450; ZG1Cr18NI9 Ti; ZG0Gr18N12Mo2Ti
Seat, spool material
1Cr18NI9; 0Cr18Ni12Mo2Ti
On the bonnet type
Ordinary (room temperature type); heat-chip (temperature type)

Note: Can provide GB, ANSI, JP, JIS, DIN and other flange structure type, flange distance can be determined according to user needs. 
 
 2, the implementation of the main technical parameters and agencies to cut off the relationship between

Nominal diameter mm
Actuator model
Cylinder diameter mm
Travel mm
Air intake thread
Remarks
Normal temperature type
Medium temperature type
Normal temperature type
Medium temperature type
Normal temperature type
Medium temperature type
ZSP: Single acting 
ZSP: Double acting
20
ZSPA B-1
ZSPA B-1 
ZSN-1
150
150
10
M16 × 1.5
M16 × 1.5
25
40
ZSPA B-2 
ZSN-1
200
16
50
65
ZSPA B-2
ZSPA B-3 
ZSN-2
200
300
25
M20 × 1.5
80
100
30
150
ZSPA B-3
ZSPA B-4 
ZSN-3
300
400
40
M20 × 1.5
M24 × 2
200
60


 3, performance indicators

Nominal pressure mm
20
25
40
50
65
80
100
150
200
Seat diameter mm
20
25
32
40
50
65
80
100
125
150
200
Soft seal leakage
Water test 
△ P = △ Pmax mlmin
0
Pneumatic test 
△ P = 0.35MPa bubble number / min
1
1
2
3
4
6
11
18
27
45
Hard seal leakage
Water test MPa
4.0
3.0
ml / min
0.24
0.30
0.38
0.48
0.60
0.78
0.96
1.2
1.125
1.35
1.8
Gas test 
△ P = 0.35MPa ml / min
23.3
29.2
37.3
46.7
58
75.8
93.3
116.7
145.8
175
233.3
Cut off the time S
0.5
1
1.5
2
3
4
Rated travel deviation%
± 6


4, to allow the pressure difference:

Nominal diameter mm
20
25
40
50
65
80
100
150
200
Cylinder diameter mm
150
200
300
400
Air pressure KPa
500
Allow pressure drop
Machine off the air
Flow away
4.0
4.0
2.6
2.2
3.8
2.6
2.0
1.95
1.59
Flow off
4.0
4.0
4.0
3.1
3.1
3.2
1.6
2.0
1.63
The whole machine open
Flow away
4.0
3.0
2.1
1.7
1.7
1.1
0.9
0.52
0.43
Flow off
4.0
4.0
4.0
4.0
4.0
3.6
2.7
3.4
2.2


 Third, dimensions:

Nominal diameter DN
20
25
40
50
65
80
100
150
200
L
PN 
MPa
1.6
194
197
235
267
292
317
368
500
635
4.0
650
6.4
206
210
251
286
311
337
394
520
650
H
65
70
85
90
100
105
125
170
205
Without handwheel
H1
Normal temperature type
445
455
485
485
605
605
620
962
988
Medium temperature type
596
606
636
636
770
770
785
1178
1226
With hand wheel
H1
Normal temperature type
630
640
670
670
790
790
805
1087
1113
Medium temperature type
781
791
821
821
955
955
970
1303
1351
H2
160
160
160
160
160
160
270
270
270
H3
220
220
220
220
220
220
390
390
390