Edrv dynamic balance electric control valve

Short Description:

The dynamic balance electric control valve is a new generation product which is different from the traditional electric control valve. It is an integrated product of dynamic balance and electric control.

In the variable flow system with large fluctuation of system load, when the system pressure changes, the pressure difference (P1-P3) at the second end of the dynamic balance electric control valve also changes

(1) When the inlet pressure P1 increases, (P1-P2) increases, the spool of the electric valve moves upward, reducing the opening between P1 and P2 and reducing the spool pressure P2; when the inlet pressure P1 decreases, (P1-P2) decreases, the spool of the electric valve moves downward, increasing the opening between P1 and P2 and increasing the spool pressure P2. Therefore, no matter how the pressure of the system changes, the pressure difference between P2 and P3 remains unchanged through the regulation of the electric valve spool. Therefore, the dynamic valve has strong anti-interference ability and dynamic balance function;

(2) When the straight stroke electric actuator receives the control signal to make the valve shaft move up and down along AB (or the angular stroke electric actuator receives the control signal to make the valve shaft rotate along R), the opening between P2 and P3 also changes. No matter how the system pressure difference (P1-P3) changes, the pressure difference (P2 — P3) between P2 and P3 remains unchanged, so corresponding to any opening position, the delivered water flow is constant, and the actual flow characteristic curve of the electric control valve is consistent with its ideal flow characteristic curve without deviation. Therefore, this kind of electric control valve has better regulation characteristics than the traditional electric control valve.


Product Detail

Product Tags

EDRV Flow characteristic curve of dynamic balance electric control valve

EDRV 动态平衡电动调节阀流量特性曲线

Material of main parts

Part name texture of material
valve body Ductile iron
Valve sleeve stainless steel
spool brass
Electric actuator housing aluminium alloy

Main technical parameters

model Valve type Specifications Differential pressure range(KPa) Flow range(m³/h) working pressure Flow error Fluid temperature
A/D-EDRV1 Two links DN25 30-300 0.2-2.9 PN16 5% 0-100℃
A/D-EDRV2 DN32 30-300 0.5-4.7
A/D-EDRV3 DN40 30-300 1-7.7
A/D-EDRV4 DN50 30-300 2-12.1
A/D-EDRV8 DN65 30-300 3-20.4
A/D-EDRV9 DN80 30-300 5-30.8
A/D-EDRV10 DN100 30-300 10-45.3
A/D-EDRV11 DN125 30-300 15-70.7
A/D-EDRV12 DN150 30-300 20-101.8
A/D-EDRV13 DN200 33-300 5.0-360
A/D-EDRV14 DN250 22-210 4.0-460

EDRV Drawing of dynamic balance electric control valve

 

EDRV 动态平衡电动调节阀图纸

Main connection dimensions

model Valve type Specifications Outline and installation dimensions
L H1 H2 D(Φ) flange G thread
A/D-EDRV1 Two way wire mouth DN25 160 265 70 / G1
A/D-EDRV2 DN32 180 275 70 / G1-1/4
A/D-EDRV3 DN40 300 290 90 / G1-1/2
A/D-EDRV4 DN50 300 290 90 / G2
A/D-EDRV5 Two way flange DN32 160 220 70 100 /
A/D-EDRV6 DN40 200 235 110 110 /
A/D-EDRV7 DN50 215 230 15 125 /
A/D-EDRV8 DN65 230 238 120 145 /
A/D-EDRV9 DN80 275 275 146 160 /
A/D-EDRV10 DN100 290 295 165 180 /
A/D-EDRV11 DN125 315 307 208 210 /
A/D-EDRV12 DN150 350 326 205 240 /
A/D-EDRV13 DN200 430 715 295 295 /
A/D-EDRV14 DN250 520 740 345 355 /

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