ZDLM Electric Actuated Cage Type Pressure Balanced flow Control Valve
 
Brief Introduction
1. ZDLM Electric Actuated Cage Type Pressure Balanced Flow Control Valve adopt Cage-guided and pressure balanced Double Sealing and Single Sealing structure, which is Pressure Balanced Flow Control Valve.

2.It has following advantages: Precise valve body , SPattern Flow Port, Small Pressure Drop, Big Adjusting Range and High Precision of Flow Cv Value. The Dis-guiding area is big. It also has strong aseismic performance. The sealing performance is conformed to Standard GB/T4213-92. 
 
3.Such control valve uses small, strong and high precision electric actuator with On-Off Function or with 4-20mA DC or 1-5V direct current signal to realize valve's proportional action, which is more suitable for the working condition required reliable and high sealing performance, High Temperature or Low temperature or High Pressure.

4.Such cage type Flow control valve has good stability, not easy to produce vibration, low noise, sensitivity to temperature, single seal type is suitable for the condition under which is with relatively low leakage, low pressure differential and clean medium occasion. Double seal type is suitable for the condition under which leakage is relatively allowable, the pressure differential is  bigger  and clean medium occasion. Small hole throttle type features which ensure the valve can be used for low noise valve.  Such valve is widely used in electric power, metallurgy, chemical industry, petroleum, environmental protection, light industry, equipment, etc. 

5.. ZDLM electric actuated Cage Type Control valve controls the flow rate of the piping system with AC220V power supply voltage and with 4-20mA Input Current signal or voltage signal from DCS/PLC or Positioner.  The valve can also adopt a mechanical and electrical integration structure and has a built-in servo operation and opening position feedback signal, position indicator, manual operation, and other functions, which ensure the strong functional, reliable performance, simple connection, high controlling accuracy. The itinerary thrust from the straight  stroke can change valve opening displacement so as to regulate fluid process parameters precisely. 

6. ZDLM electric actuated Cage Type Control valve adopts cage type balanced valve disc, with which unbalanced pressure is low and the performance is stable, which is applicable for the working condition with high pressure differential and a larger leakage circumstances. 

Standard technical specification
Valve Body
Type:  Straight Through Single Seat Cast Steel Globe Valve
Size: DN20-300
Pressure: PN16~PN100, Class 150LB ~ Class 600LB
Connection: RF(Standard), Threaded, Welded
Flange Facing:  Raised Face
Face to Face dimension: GB12221-89
Material: WCB, 304,316
Bonnet Type: Gland
Packing:  V tupe PTFE,  Flexible Graphite
Gasket: Plain Type, PTFE, SS+Graphite
 
Valve Trim
Disc: Cage Type
Sleeve: Metal Sealing(Equal Percentage, Linear)
       RPTFE (Equal Percentage, Linear)
 
Actuator
Type: Electric Actuator
Model: 381LSA/XA-08,  381LSA/XA-20,  381LSB/XB-30,  381LSB/XB-50, 381LSC-65, 381LSC-99
381LSC-160, 381LSC-260
Valve Action: Direct Action, Reaction (Force)
Controlling Action: Proportional Linear Controlling or ON-OFF Controlling.
Input Signal: 4~20mA DC or 1~5V DC
Power: AC220V, 50HZ
Output Signal: 4~20mA DC
Power Consumption: A Type-50VA, B Type--150VA, C Type-220VA
Protection Level: IP55
Wire Connection: Normal S Type--G1/2", Explosion-Proof X Type---G3/4"
Ambient Temperature: Normal---10 Deg C~ 60 Deg C, With Space Heater---35 Deg C~ 60Deg C, Explosion-Proof X Type--- -10Deg C ~40 Deg C
Ambient Humidity: Normal S Type--Below 95%, Explosion-Proof X type--45%-85%
Explosion-Proof: ExdIIBT4
 
Performance
Raded KV Value: Refer to Table 1
Flowing Features: Linear, Equal Percentage
Adjusting Range: 50:1
Leakage Rate: Metal Sealing should be below 0.01% ANSI B16.104-1976 Class IV
            Soft Sealing should be below 0.00001% ANSIB16.104-1976  Class VI
Allowable Deviation: 1%

Table 1: Kv Value & Action Time: