Bray Series 05 Valve Actuator Manual Override

Manual override for spring-return pneumatic actuators during power loss, compatible with 2"-36" valves

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The Bray Series 05 valve actuator manual override is compatible with spring-return pneumatic actuators and 2"-36" (50mm-900mm) quarter-turn valves, with an output torque of 2000-36000. In the event of a power failure, the valve can be manually opened or closed by engaging the drive mechanism and operating the handwheel. Suitable for isolation and on/off control applications.

Application scenarios

Manual open/close operation of quarter-turn valves during power outages

The Series 05 serves as a manual override for spring-return pneumatic actuators. During power outages, it enables manual opening or closing of associated quarter-turn valves for isolation or on/off control by engaging the drive mechanism and operating the handwheel.

Isolation and on/off configuration for valves equipped with pneumatic actuators

The Series 05 can be installed on quarter-turn valves equipped with Bray pneumatic actuators for isolation or on/off control. During normal pneumatic operation, the worm gear drive remains disengaged.

Selection points

Worm Disengages During Pneumatic Operation

During pneumatic operation, the worm disengages from the gear train, and the manual mechanism does not participate in pneumatic transmission.

Clutch Engages for Handwheel Operation During Power Failure

When valve opening or closing is required during a power failure, manually rotate the clutch lever to engage the worm with the segmented worm gear through cam action, then rotate the valve using the handwheel.

Compatible with Spring-Return Pneumatic Actuators

Series 05 provides manual override for spring-return pneumatic actuators to ensure safe valve control during power failure.

Suitable for Installation with Bray Pneumatic Actuators

Series 05 can be installed on valve assemblies equipped with Bray pneumatic actuators.

Torque and Valve Size Coverage

The product provides an output torque range of 2000-36000 and is suitable for quarter-turn valves from 2 in. to 36 in. (50 mm to 900 mm).

Installation & maintenance notes

Disengage the Worm Before Resuming Pneumatic Operation

After completing manual override, disengage the worm before resuming pneumatic operation to ensure the manual override is in its normal pneumatic operating state.

Engage the Worm via the Clutch Lever Before Manual Override

When manual valve operation is required, rotate the clutch lever to produce cam action and engage the worm with the segmented worm gear before operating the valve with the handwheel.

FAQ

How does the manual override actuator ensure safe valve operation during a power outage?

The Series 05 uses a manual declutch lever to actuate the cam, engaging the worm with the segmented worm gear. The handwheel then rotates the valve, enabling valve opening or closing without power for safe control.

What valve sizes and types is this series suitable for?

Models are available for 2 in. to 36 in. (50mm-900mm) valves. They are compatible with quarter-turn valves and suitable for isolation/on-off applications.

What is the output torque range and what applications is it intended for?

The output torque range is 2000 to 36000. It is intended for isolation and on-off operation, with manual override capability for reliable valve control during power outages.

What should be considered when used with pneumatic actuators?

The Series 05 can be installed in systems equipped with Bray pneumatic actuators to provide manual override capability during pneumatic opening and closing operations in the event of a power outage.

What are the operating principle and key selection considerations for this product?

It operates by providing manual override for the safe operation of spring-return actuators. When selecting a unit, confirm the valve size range, required output torque, quarter-turn valve model, and whether it must operate with an existing pneumatic actuator.