Electric single seat (sleeve) control valve 

 ZDLP / M-type electronic precision small electric single seat (sleeve) control valve, the low flow resistance through single seat, or low flow resistance, sleeve valve is equipped with 3810 series actuators and other components. Actuators within the servo amplifier, servo amplifier without reprovision, an input control signal (4-20mADC or 1-5VDC) and single-phase power to control the operation, to achieve the pressure, flow, temperature, level and other parameters of the adjustment . The valve has a small size, light weight, simple connection, flow, and high regulation accuracy, widely used in electric power, petroleum, chemical industry, metallurgy, environmental protection, light industry, teaching and research equipment and other industries in the industrial process automatic control system . 
 Body 
 Forms: direct inverted S casting valve 
 Nominal diameter: DN20-200mm 
 Nominal pressure: PN1.6 4.0 6.4MPa 
 Connection form: JB78-59 JB/T79.2-94 recessed 
 Material: HT200 ZG230-450 ZG1Gr18Ni9Ti 
 ZG0Cr18Ni12M02Ti 
 Bonnet 
 Normal temperature type: -20 ℃ - +200 ℃ 
 Cooling type: -40 ℃ - +450 ℃ 
 Gland in the form: Bolt Clamp 
 Packing: V-type PTFE, flexible graphite, stainless steel bellows 

 Valve components 
 Spool forms: guidance on single-seat piston valve, or on guiding single-seat piston valve sleeve 
 Flow characteristics: equal percentage, 
 A straight line features and quick opening characteristics 
 Material: 1Cr18Ni9Ti OCr18Ni12Mo2Ti 
 Executive body 
 Type: Optional QS, 3810, ZAZ (DN100 or less) 
 Or DKZ (DN100 and above) electronic travel straight 
 Implementing agencies, selection of 3810-type explosion-proof, technical 
 Technical parameters and performance: please refer to the corresponding execution 
 Bodies and valve positioner instruction manual. 
 Dimensions 




 Nominal 

 Diameter DN (mm) 
 L (mm) 
 H (mm) 
 H1 (mm) 
 D 

 (Mm) 

 0.6,1.6 

 (MPa) 
 4.0 

 (MPa) 
 6.4 

 (MPa) 
 Room temperature 

 Type 
 Cooling 

 Type 
 PN0.6 

 (MPa) 
 PN1.6 

 (MPa) 
 PN4.0 

 (MPa) 
 PN6.4 

 (MPa) 

 20 
 181 
 194 
 206 
 699 
 849 
 45 
 52.5 
 52.5 
 65 
 225 

 25 
 184 
 197 
 210 
 711 
 861 
 50 
 57.5 
 57.5 
 70 
 225 

 40 
 222 
 235 
 251 
 728 
 893 
 65 
 75 
 75 
 85 
 225 

 50 
 254 
 267 
 286 
 731 
 901 
 70 
 82.5 
 82.5 
 90 
 255 

 65 
 276 
 292 
 311 
 827 
 100.7 
 80 
 92.5 
 92.5 
 102.5 
 255 

 80 
 298 
 317 
 337 
 839 
 1024 
 95 
 100 
 100 
 107.5 
 255 

 100 
 352 
 368 
 394 
 857 
 1067 
 105 
 110 
 117.5 
 125 
 310 

 150 
 451 
 473 
 508 
 1140 
 1400 
 132.5 
 142.5 
 150 
 172.5 
 310 

 200 
 600 
 610 
 650 
 1160 
 1420 
 160 
 170 
 187.5 
 207.5 
 310 


 ZDLP / M Specification 



 Nominal diameter DN 
 20 
 25 
 32 
 40 
 50 
 65 
 80 
 100 
 125 
 150 
 200 

 Seat diameter (mm) 
 10 
 12 
 15 
 20 
 25 
 32 
 40 
 50 
 65 
 80 
 100 
 125 
 150 
 200 

 Rated flow coefficient Kv 
 Straight line 
 1.8 
 2.8 
 4.4 
 6.9 
 11 
 17.6 
 27.5 
 44 
 69 
 110 
 176 
 275 
 440 
 690 

 Equal percentage 
 1.6 
 2.5 
 4 
 6.3 
 10 
 16 
 25 
 40 
 63 
 100 
 160 
 250 
 400 
 630 

 Stroke mm 
 10 
 16 
 25 
 40 
 60 

 △ MPa pressure difference allowed 
 Single-block 
 6.4 
 4.5 
 3.2 
 2.5 
 3.2 
 2.15 
 1.4 
 1.37 
 0.94 
 0.6 
 0.52 
 0.35 
 0.2 

 Sleeve type 

 6.4 
 3.7 
 3.7 
 2.4 
 2.9 
 1.5 
 0.8 
 3.1 
 3.1 
 3.1 

 Allowable leakage Q 
 Single-block 
 Kv value is 0.01%, according to GB4213-84 standard 

 Sleeve type 
 Kv value is 0.05%, according to GB4213-84 standard 

 Models with electric actuator 
 QSL 
 201 
 202 
 204 
 208 
 312 

 3810L 
 381LSA-08 
 LSA-20 
 381LSB-30 
 381LSB-50 
 381LSC-65 

 Basic error% 
 ± 2.5 

 Differential% 
 2.0 

 Dead% 
 1.0 

 Always point deviation% 
 ± 2.5 






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