Johnson Controls MP845E001 Valve Actuator

The Johnson Controls MP845E001 Valve Actuator is a heavy-duty 50 square inch pneumatic actuator engineered for precise positioning of valves in commercial HVAC and industrial process systems. This spring return stem up model features a 9-13 PSI spring range, providing the linear force necessary for accurate modulation. Designed for pneumatic valve control, it utilizes a 1 1/8" stroke to ensure complete travel for a variety of globe valve bodies. The unit includes a 1/4" OD barbed fitting for secure air line integration and is rated for a 25 PSI max control pressure. This actuator is specifically configured without mounting kit, allowing technicians to utilize existing hardware or select a specific kit for unique field installations. Whether you are replacing an aged unit or retrofitting a system for better efficiency, this Johnson Controls MP800 series actuator offers the build quality required for high-cycle environments.

Key Benefits for Technicians:

• Consistent Modulation: The 9-13 PSI spring range ensures predictive response and stable control loops.
• High Actuation Force: The 50 sq. in. effective diaphragm area provides the torque needed to overcome high fluid differentials.
• Fail-Safe Security: Spring return functionality ensures the valve returns to the stem-up position upon loss of control air.
• Standardized Integration: The 1/4" OD barbed fitting facilitates quick connection to standard pneumatic tubing.
• Installation Flexibility: Supplied as a standalone component to allow for custom mounting configurations on various valve types.

Common Questions:

What is the maximum air pressure this actuator can handle?
The Johnson Controls MP845E001 is rated for a maximum control pressure of 25 PSI. Exceeding this pressure can damage the diaphragm.

Is the mounting hardware included with this model?
No, this specific part number is provided without mounting kit. You must reuse your current linkage or purchase the compatible mounting assembly separately.

What is the default fail position for this actuator?
This is a spring return stem up actuator, meaning that in the event of a pneumatic signal failure, the internal spring will force the stem to the up position.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.