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Valves & Actuation

Actuated Plastic Butterfly Valves

Series 10 Electric Actuator on Type-57P Butterfly Valve

The Series 10 electric actuator is used to actuate Asahi's larger valves, including butterfly valves up to 24".

No air supply – In many remote locations, it may be impractical to run an air supply line and maintain it.

Colder climate – Compressed air systems are vulnerable to freezing and clogging of the air lines, or potentially damaging the equipment if located in a climate that frequently sees temperatures below freezing.

PLC/DCS Controlled Process – In the past, standard engineering practice called for pneumatically actuated valves even when the rest of the system was electronically controlled. This required a conversion from electric to pneumatic (I/P) that made systems more complicated to startup and maintain. With the increasing popularity of PLC/DCS systems, many processes and instrumentation engineers are now specifying fully electronic actuation packages.

Installation savings – The cost to prepare a plant for pneumatically actuating a few valves (compressor, regulators, air lines, etc) far exceeds the cost of using electrically actuated valves *even though pneumatic actuators are used, electricity is still required to energize the solenoid valve coils that cycle the pneumatic actuators


Data Sheet

Ideal Applications Include:

Locations with no air supply or colder temperatures, larger valves.



120 VAC 1Ph 50/60 Hz

Conduit Entry:

Two (2) 3/4" FNPT

Limit Switches:

Four single pole, double throw (4-SPDT), 10 Amp rated

Torque Switches:

Two single pole, double throw (4-SPDT), 10 Amp rated


1320 - 10,440 in-lbs

Amp Draw:

1.65 – 4.10

Max Ambient Temperature:

150° F

Cycle Time per 90 degrees:

21– 31 seconds


  • Motor: Reversing, squirrel cage induction motor, 120 VAC 50/60 Hz, single phase
  • Overload protection: Integral thermal overload protection for motor windings with automatic reset
  • Gear train: Permanently lubricated
  • Conduit: Two 3/4" FNPT conduit entries to eliminate cross feed between control and power signals
  • Declutchable manual override: Lockable declutching lever with handwheel
  • Limit switches: Standard end of travel limit switches can be used for light indication (not to be use with PLC for position confirmation)
  • Auxiliary (Additional) limit switches: Each electric actuator is provided as a standard with 2-SPDT auxiliary limit switches
  • Torque Switches: 2-SPDT Torque switches
  • Mechanical Stops: Two +/- 10% mechanical travel stops
  • Enclosure: Type 4X & 6
  • AWWA C542: Conforms to AWWA C542
  • Self-Locking: Self-locking worm gear design eliminates the need for a mechanical brake
  • Space Heater: A space heater is provided as standard equipment
  • Output torque: Series 10 electric actuators have an output torque range from 1320 in/lbs to 10,440 in/lbs
  • Corrosion resistant mounting: Mounting is with stainless steel bracket, stainless steel coupling, and stainless steel hardware


  • Positioner
  • Transmitter
  • Two-wire control
  • Voltages: 230/1, 380/3, 460/3, 24VDC
  • NEMA 7 Enclosure
  • ATEX Enclosure
  • Local Remote Station