LD

Material

Electric Actuator
LD-838-EA Butterfly Valve - Electric Actuator
LD-838-EA Butterfly Valve - Electric Actuator LD-838-EA Butterfly Valve - Electric Actuator
LD-838-EA Butterfly Valve - Electric Actuator
LD-838-EA Butterfly Valve - Electric Actuator

LD-838-EA

Butterfly Valve - Electric Actuator

  • 90-Degree Rotary Action:
    Designed for quarter-turn valve applications, providing reliable 90-degree rotational control.
  • Wide Torque Range:
    Delivers high power with a robust torque capacity ranging up to 35,000 kgf·cm.
  • Manual Override Safety:
    Equipped with a built-in Manual Override Mechanism, guaranteeing operational continuity and safety in the event of a power supply interruption.
  • Precision Position Feedback:
    Features an integrated Mechanical Position Indicator that can be connected to a control box to display the valve's exact opening position via signal feedback.
  • IP67 Waterproof Construction:
    All housing joints are fitted with sealing gaskets and certified to IP67 for reliable outdoor environmental protection.
  • Stable, Low-Noise Operation:
    Stable operation that avoids water hammer and noise.
  • Reinforced Disc Rib Design:
    Added structural ribs enhance disc strength and durability under demanding conditions.
  • Designed for Longevity & Efficiency:
    Valve body mounted with the seat seal to ensure low-torque and long life.
  • Meet ISO 5211 standard:
    F05, F07, F10 easy to replace and installation of Pneumatic and Electric actuator.

    • Please contact us for Flow Rate, CV Value, Working Pressure/Temperature, Pressure Loss, and other technical information.

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Specification

Material

Body: PVC, CPVC
Seat: EPDM, FKM (FPM)

Standard

Flange: ANSI, BS, JIS, TABLE D&E
Working Pressure:
2" - 6": 150 PSI @ 73°F
8" - 12": 100 PSI @ 73°F

Electrical Ratings (AC 110–220V, 60 Hz)

Valve Size 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12"
Power 10W 10W 10W 15W 18W 25W 25W 25W 40W
Open/Close Time (60Hz) 10s 10s 10s 11s 11s 8s 8s 30s 30s
No-load Current AC110V 0.6A 0.6A 0.6A 1.2A 1.1A 0.6A 0.6A 0.6A 0.9A
AC220V 0.3A 0.3A 0.3A 0.4A 0.6A 0.6A 0.6A 0.6A 0.6A
Torque(5%)
AC110V		 N·m 34 N·m 34 N·m 34 N·m 49 N·m 69 N·m 146 N·m 146 N·m 306 N·m 418 N·m
kgf·cm 350 350 350 500 700 1486 1486 3118 4266
Torque(5%)
AC220V		 N·m 36 N·m 36 N·m 36 N·m 49 N·m 69 N·m 153 N·m 153 N·m 325 N·m 478 N·m
kgf·cm 362 362 362 500 700 1562 1562 3320 4873

Reference values are based on 60 Hz (minor differences may vary at other frequencies).
※ If the working pressure is more than 10kgf-cm² , you should replace it with a bigger actuator.
※ For DC specifications, please contact us.



Standard

Flange: DIN, ISO
Working Pressure:
DN50 - DN150: PN10 BAR @ 22°C
DN200 - DN300: PN6 BAR @ 22°C

Electrical Ratings (AC 110–220V, 60 Hz)

Valve Size DN DN50 DN65 DN80 DN100 DN125 DN150 DN200 DN250 DN300
d (mm) 63 75 90 110 140 160 225 280 315
Power 10W 10W 10W 15W 18W 25W 25W 25W 40W
Open/Close Time (60Hz) 10s 10s 10s 11s 11s 8s 8s 30s 30s
No-load Current AC110V 0.6A 0.6A 0.6A 1.2A 1.1A 0.6A 0.6A 0.6A 0.9A
AC220V 0.3A 0.3A 0.3A 0.4A 0.6A 0.6A 0.6A 0.6A 0.6A
Torque(5%)
AC110V		 N·m 34 N·m 34 N·m 34 N·m 49 N·m 69 N·m 146 N·m 146 N·m 306 N·m 418 N·m
kgf·cm 350 350 350 500 700 1486 1486 3118 4266
Torque(5%)
AC220V		 N·m 36 N·m 36 N·m 36 N·m 49 N·m 69 N·m 153 N·m 153 N·m 325 N·m 478 N·m
kgf·cm 362 362 362 500 700 1562 1562 3320 4873

Reference values are based on 60 Hz (minor differences may occur at other frequencies).
※ If the working pressure is more than 10kgf-cm² , you should replace it with a bigger actuator.
※ For DC specifications, please contact us.



Pressure(PSI) vs. Temperature(°C)

Body PVC
Valve Size (Inches) 0–49°C 50–60°C 61–80°C
2" 150 70 30
2-1/2" 150 70 30
3" 150 70 30
4" 150 45 30
5" 150 45 30
6" 150 45 30
8" 100 30 15
10" 100 30 15
12" 100 25 10
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