- Product Details
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Quick Details
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Model Number:
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ZJHM Pneumatic Control Valve
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Brand Name:
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COVNA
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Type:
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Pneumatic Control Valve, Globe Valves, Air Modulating Valve
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Body material:
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SS304, WCB
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Air Supply Pressure:
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0.14, 0.16, 0.28, 0.4MPa
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Working Pressure:
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1.6, 4.0, 6.4MPa
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Size:
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DN20~DN300
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Temperature:
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-30℃~+70℃
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Actuator Type:
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Multi-Spring diaphragm type
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Medium:
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Air, Oil, Gas, Steam, etc
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Connection:
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Flanged
Quick Details
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Port Size:
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3/4"~12"
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Warranty:
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1 year, 12 Months
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Place of Origin:
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Guangdong, China
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Model Number:
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ZJHM Pneumatic Control Valve
-
Brand Name:
-
COVNA
-
Type:
-
Pneumatic Control Valve, Globe Valves, Air Modulating Valve
-
Body material:
-
SS304, WCB
-
Air Supply Pressure:
-
0.14, 0.16, 0.28, 0.4MPa
-
Working Pressure:
-
1.6, 4.0, 6.4MPa
-
Size:
-
DN20~DN300
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Temperature:
-
-30℃~+70℃
-
Actuator Type:
-
Multi-Spring diaphragm type
-
Medium:
-
Air, Oil, Gas, Steam, etc
-
Connection:
-
Flanged
Product Description
Advantage of COVNA Pneumatic Control Valve:
●
It is cost-effective and safe to be used,which can help you save cost of the whole system COVNA Single Seat Pneumatic Globe Control Valve maintenance.
● It has a simple structure and a big torque, explosion-proof with short actuating times,optimized actuating forces and reliable tight sealing.
● It can perfectly avoid problems of friction, corrosion, and emissions.
● It is of low center of gravity, high vibration resistance and easy to install.
● Simple to control, rapid response, and intrinsic safety, no need to take additional explosion-proof measures.
● Fluid channels in a s- shaped streamline, small pressure drop loss large flow, wide adjustment range, high precision flow
● It has a simple structure and a big torque, explosion-proof with short actuating times,optimized actuating forces and reliable tight sealing.
● It can perfectly avoid problems of friction, corrosion, and emissions.
● It is of low center of gravity, high vibration resistance and easy to install.
● Simple to control, rapid response, and intrinsic safety, no need to take additional explosion-proof measures.
● Fluid channels in a s- shaped streamline, small pressure drop loss large flow, wide adjustment range, high precision flow
●
COVNA pneumatic control valve has good adjustment stability. For the working conditions with large pressure difference, the cavity of the valve body is enlarged, which improves the buffer capacity of the valve body
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Item
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Modulating 4-20mA Control Valve Cast Steel ANSI Flange 150LB Spring Returned Pneumatic Control Valve with Positioner
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Acting Mode
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Multi-Spring diaphragm type
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Working Pressure
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1.6, 4.0, 6.4MPa
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Air Supply Pressure
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0.14, 0.16, 0.28, 0.4MPa
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Lifespan
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1,000,000 (1 Million) Times
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Temperature
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-30°C~70°C
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Body Material
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SS304, SS316, SS316L, WCB
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End Connection
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Flanged
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Applicable Media
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Control of Water, Air, Gas, Oil, Liquid, Steam, etc
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Optional Accessories
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Namur Solenoid Valve, Limit Switch, F.R.L, Position Indicator, Manual Device
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Application
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Food & Beverage, Water & Wastewater, Ultra Pure Water, Desalination, Chemical, Textile, Pharmaceutical, Pulp & Paper, Mining,
Boiler and Power Industries |
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Dimension:
Type of Pneu
matic Contr
ol Valve:
Weight table of Pneumatic diaphragm regulating valve:
Electric Actuator
Multi-spring diaphragm actuator in direct action & reverse action. NBR rubber reinforcing polyester fabric diaphragm material. Spring range 20~100KPa, 40~200KPa, 80~240KPa. Supply pressure from 0.4MPa to 0.5MPa.
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Control Valve Type\ Method
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Pneumatic diaphragm actuator
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ZJHP～ZJHM
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Multi-spring type
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Usage
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Regulating type, ON-OFF type
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Air supply pressure or Power supply voltage
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Air supply pressure (Spring range)
140（20～100）Kpa G 240 (40～200) Kpa G 280 (80～240) Kpa G |
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Connector
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Air pipe connector: RC1/4
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Direct action
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Pressure increase, stem descend, valve close.
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Reaction
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Pressure increase, stem ascend, valve open.
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Input signal
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40～20mA.DC（with positioner）
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Lag
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≤1%FS（with positioner）
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Linear type
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2%FS（with positioner）
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Environmental temperature
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-10℃～+70℃
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Pneumatic control valve
Accessories |
E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch
Non-standard accessories, need special customized notes. |
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Technical Parameter of Valve Body
1. Major performance indexes shall be as shown in below table
2. Testing shall be conducted according to the specification of GB/T4213-92
2. Testing shall be conducted according to the specification of GB/T4213-92
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Serial No.
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Technical Performance
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Without Positioner
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With Positioner
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1
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Basic Error
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≤±5%
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≤±1%
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2
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Return Difference
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≤3%
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≤1%
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3
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Dead Zone
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≤3%
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≤0.4%
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4
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Leakage
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ZJHP Type:≤1X10-4Rated FlowZJHM Type:≤1X10-3 Rated Flow
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5
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Rated Flow Coefficient
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≤±10%
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6
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Inherent Flow Characteristic
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Slope±30%
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Available in Stainless Steel 304, Stainless Steel 316, Carbon Steel, Cr-Mo Steel
Also available in Cast Iron for your choice
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