Electric Top-Guided Control Valve
Electric Top-Guided Control Valve
Electric Top-Guided Control Valve
Electric Top-Guided Control Valve

Electric Top-Guided Control Valve

  • Improved control accuracy over DKZ actuators; single-seat design for strict leakage, low differential pressure and viscous media
  • PSL or 361L electric actuators; ±1.0 % accuracy with positioner; 50:1 rangeability; Class IV leakage per JB/T7387-94
  • DN20-300, PN1.6-6.4 MPa; top-guided single-seat plug; widely used in power, metallurgy, chemical, petroleum, environmental protection and light industries

Category

Overview

ZSAP intelligent electric top-guided control valve delivers significantly improved control accuracy and performance compared with the DKZ type. The single-seat valve is suitable for applications with strict leakage requirements, low differential pressure across the valve and moderately viscous media.

It is widely used in power generation, metallurgy, chemical, petroleum, environmental protection, light industry and equipment manufacturing industries.

Performance Specifications

Item Detail Value
Basic Error (%)   ±2.5 with 361L actuator; ±1.0 with positioner
Hysteresis (%)   2.0 with 361L actuator; 1.0 with PSL actuator
Dead Band (%)   1.0
Start/End Point Deviation (%) Direct-acting Start point: ±2.5; end point: ±2.5
Reverse-acting Start point: ±2.5; end point: ±2.5
Rangeability   50:1
Rated Stroke Deviation (%)   2.5
Leakage (L/h)   Class IV per JB/T7387-94; less than 10-4 × rated valve capacity

Allowable Differential Pressure

Nominal Diameter DN (mm) 20 25 40 50 65 80 100 150 200 250 300
(10) (12) (15) (20) (32) (40) (125) (150)
With PSL PSL202 6.4 6.4 6.4 4.90 3.14 1.92 1.23 0.78              
PSL204           4.31 2.76 1.76 1.04 0.69 0.44        
With 361L 361LSA-20 6.4 6.4 6.4 4.90 3.14 1.92 1.23 0.78              
361LSB-50           4.79 3.06 1.96 1.16 0.76 0.49        
With 361L 361LSC-65               1.51 0.99 0.64 0.41 0.28      
361LSC-99                   0.63 0.44 0.25 0.16 0.11  

Overall Dimensions (Unit: mm)

Parameter Sub-item Type 20 25 40 50 65 80 100 150 200 250 300
L PN1.6 MPa 181 184 222 254 276 298 352 451 600 720 820
PN4.0 MPa 194 197 235 267 292 317 368 473 600 760 850
PN6.4 MPa 206 210 251 286 311 337 394 508 650 800 870
H1   67 72 87 92 105 110 127 174 209 300 350
With PSL H Standard 738 750 765 767 845 857 875 1025 1045 1252 1545
Cooling-fin 888 900 930 937 1025 1042 1085 1285 1305 1805 1825
D   176 225
Weight (kg)   15 17 24 29 49 61 82 150 211 370 570
With 361L H Standard 501 513 650 652 770 782 800 1080 1125 1345 1365
Cooling-fin 651 663 815 822 950 967 1010 1340 1385 1625 1645
D   225 310
Weight (kg)   23 24 39 44 64 76 97 203 264 418 618

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