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Gengong Valve (Zhejiang) Co., Ltd

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    Dongou Industrial Zone, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province

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Pneumatic piston type cut-off valve 2

NegotiableUpdate on 05/13
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Overview

Product 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 ℃ (normal temperature type), -40~450 ℃ (medium temperature type) Main material: ZG230-450; ZG1Cr18NI9 Ti； ZG0Gr18N12Mo2Ti drive mode: Pneumatic design standard: GB/T17213 Flange standard: GB/T9113, JB/T79, HG20594 and other standards Inspection standard: GB/T4213 Connection form: flange (FF RF RTJ), welding (SW BW), thread (applicable to 1 inch or less)

Product Details

Overview of ZSPC Pneumatic Piston Cut off Valve:

ZSPC type pneumatic piston normal temperature and medium temperature cut-off valve consists of a pneumatic piston actuator and a cut-off mechanism. According to the sealing surface material of the valve core, it can be divided into hard seal and soft seal; according to the structure of the valve core, it can be divided into single guide flat plate type and single guide balanced type. It has the characteristics of simple structure, reliable action, tight cutting, and fast closing and opening. Suitable for gas and liquid media without particles or impurities, requiring fast and tight closure and rapid venting in automatic control systems.


1、 Model and specifications

model
 room temperature type
hard seal
 room temperature type
soft seal
 Medium temperature type
hard seal
 Room temperature type hard seal
Sealing handwheel
 Room temperature soft seal with handwheel
 Medium temperature hard seal with handwheel
model
 ZSP NC1-
（16/64）B K
 ZSP NC2-
（16/64）B K
 ZSP NC1-
（40/64）B KG
 ZSPC1-
（16/64）B K
 ZSPC2-
（16/64）B K
 ZSPC1-
（40/64）B K
specification
 DN20-200


2、 Main technical parameters and performance indicators
1. Main technical parameters of the cutting mechanism

Nominal pressure mm
 20
 25
 40
 50
 65
 80
 100
 150
 200
Valve 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； six point four
Travel distance mm
 10
 16
 25
 30
 40
 60
flow characteristics
 Quick open
Medium temperature ℃
 Soft seal: -40~150 (normal temperature type); Hard seal: -40~200 (normal temperature type), -40~450 (medium temperature type)
Flange size and type
 PN16 according to JB78-59 smooth type; PN40、 64 according to JB/T79.2-94 concave
Valve body material
 ZG230-450； ZG1Cr18NI9 Ti； ZG0Gr18N12Mo2Ti
Valve seat and valve core material
 1 CR 18 by 9 ； 0 CR 18 of 12 mo 2 Ti
Upper valve cover type
 Ordinary type (constant temperature type); Hot plate (medium temperature type)

Note: GB, ANSI, JP, JIS, DIN and other flange structure types can be provided, and the flange distance can be determined according to user needs.

2. Matching relationship between the main technical parameters of the executing mechanism and the cutting mechanism

Nominal diameter mm
 Model of actuator
 Cylinder diameter mm
 Travel distance mm
 inlet hole thread
 remark
room temperature type
 Medium temperature type
 room temperature type
 Medium temperature type
 room 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
Valve seat diameter mm
 20
 25
 32
 40
 50
 65
 80
 100
 125
 150
 200
Leakage rate of soft seal
 Water test
△P=△ Pmax mlmin
 0
Gas test
△ P=0.35MPa Bubble count/min
 1
 1
 2
 3
 4
 6
 11
 18
 27
 45
Leakage rate of hard seal
 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 time S
 0.5
 1
 1.5
 2
 3
 4
Rated travel deviation%
 ±6


4. Allowable pressure difference:

Nominal diameter mm
 20
 25
 40
 50
 65
 80
 100
 150
 200
Cylinder diameter mm
 150
 200
 300
 400
Gas source pressure KPa
 500
 Allow pressure difference
 Whole machine air closed type
 Flow open
 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
Whole machine pneumatic open type
 Flow open
 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


3、 External 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
 room temperature type
 445
 455
 485
 485
 605
 605
 620
 962
 988
Medium temperature type
 596
 606
 636
 636
 770
 770
 785
 1178
 1226
With handwheel
 H1
 room 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
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