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Valves & Actuation
Protek 94 battery pack

Plastic Actuated Ball Valves

Options - Series 94 Protek Battery Pack

The Quarter Master Protek Failsafe Electric Actuator features a rechargeable battery pack that is capable of 25 cycles under full load conditions, a built-in trickle charger, a low battery indicator, and an auxiliary limit switch that is calibrated with the fail position. The battery pack is installed inside of the actuator housing, so a separate enclosure to house the battery is not required.

When power is received from the primary power source, it is directed to the actuator motor and switches for normal cycling of the actuator. When the primary power source is interrupted, the battery pack is then connected to the motor and switches, and powers the actuator to a failsafe position. In this failsafe position, the auxiliary limit switch is tripped, and can be wired to an alarm. Once the primary power source is restored, the battery pack is disconnected and normal operation resumes.

Ideal Applications Include:

Locations requiring both an electric actuator and a power-loss open/close backup.



A94, B94


150 in/lbs - 300 in/lbs


120 VAC, 1-phase, 50/60Hz

Amp Draw:

0.2A – 4.0A, depending on supply voltage

Conduit Entry:

one (1) 1/2" FNPT

Maximum Ambient Temperature:

150 F


Three (3) SPDT, 15 amp rated.
Two (2) for end of travel,
One (1) auxiliary calibrated with fail position.

Cycle Time per 90:

5 seconds.

Maximum Battery Current Charge:

200mA (13 Volts)


  • Compact design: Rechargeable battery pack is installed inside of actuator housing
  • Battery indicator: "Low battery charge" indicator light is installed in one of the conduit entries for visual status of battery charge
  • Trickle charger: Standard unit is equipped with built-in, automatic trickle charger to maintain full charge to battery pack
  • Battery power: Unit is capable of 25 continuous cycles, under full load, using only battery pack
  • Remote-local switch: Located inside of housing facilitates start-up and maintenance
  • Fail position: Calibrated for fail open or fail close
  • Extended duty cycle: 75% duty cycle motor Gear train: Permanently lubricated
  • Enclosure: Type 4X
  • Corrosion resistant enclosure: Zytel FR50 engineered resin with SS trim
  • ISO mounting configuration
  • Conduit: 1/2" FNPT conduit entry
  • Position indication: Highly visible position indicator for positive position of valve, even at a distance
  • Declutchable manual override: Push down on handle and rotate in appropriate direction
  • Limit switches: Unit is standard with two end of travel limit switches, and one auxiliary limit switch that is calibrated with the fail position
  • Corrosion resistant mounting: Mounting is with PPG bracket, stainless steel coupling, and stainless steel fasteners
  • Output torque: Series 94 actuators have an output torque range from 150 in/lbs to 300 in/lbs
  • Manual override


  • Voltages
  • Heater and Thermostat
  • Feedback Potentiometer