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March  28 , 2024  Thursday
Home> pneumatic valve >> ZHAN-40KGpneumatic diaphragm through double-seat control valve
  • Product number:MC-000000004344
  • Product name:pneumatic diaphragm through double-seat control valve
  • Product Type:ZHAN-40KG
  • Product nameplate:SAIC
  • Project Category:pneumatic valve >>
  • Manufacturer:Shanghai Automation Instrumentation Co., Ltd.
  • Sales unit: Shanghai Automation Instrumentation Marketing Center
  • Information download:Click to enter the download page  
  • Introduction
  • Specifications
Pneumatic diaphragm through double -seat adjusting valve, is the general actuator of automatic control system. Simple structure, reliable action, convenient maintenance, widely used in chemical, petroleum, power, metallurgy for automatic adjustment and  remote control
Structure principle
Pneumatic diaphragm through double -seat adjusting valve, made up of ZHA pneumatic diaphragm multi-spring actuator and VN through double-seat valve
Small flow valve is single-seat structure, impact structure, small size, light weight, convenient maintenance
Conical valve spool, small control flow, good sealing, precise regulation
Principle: input signal pressure that action on air room of diaphragm, drive valve spool, travel of valve spool changes, change the flow area, then regulate the processing parameters of pressure, temperature, flow and liquid level
Nominal diameter DN(mm)
25
32
40
50
65
80
100
125
150
200
Rated flow coefficient  KV
10
16
25
40
63
100
160
250
400
630
Inherent flow characteristic
Straight line;equal percentage
Nominal pressure DN(MPa)
1.6、4.0、6.4
Working temperature ℃
-20~+200;-40~+250;-40~+450;-60~+450;
Environment temperature ℃
-40~+85;
Model of actuator
ZHA-22
ZHA-23
ZHA-34
ZHA-45
Rated travel (mm)
16
25
40
60
Active area of diaphragm(㎝2)
350
560
900
Pressure of air supply (MPa)
0.14;0.25;0.4
Spring pressure (KPa)
20~100;40~200;20~60;60~100
Connection thread
M16×1.5
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