Honeywell MP904A5047 Pneumatic Actuator MP904A5047

The Honeywell MP904A5047

 is part of the MP904 series of pneumatic damper operators, engineered for robust direct-acting control of dampers and air-handling devices in commercial and industrial HVAC systems. The “A” set (MP904A) denotes a direct-acting variant (actuator drives in one direction under pressure) as per Honeywell’s MP904A/B/C series specification sheet. prod-edam.honeywell.com+2Astra Automatyka+2

Key Features & Highlights:

• Designed to operate on a pneumatic supply pressure of 21-70 kPa (~3-10 psi), allowing use in compressed air or branch-line systems. Topbrands PLC Limited+1

• Provides force output roughly in the ballpark of 550-600 N (for this model version) under the indicated pressure range. DcsSupplier Limited+1

• Operating ambient temperature range: approx -30 °C to +70 °C (some sources may show slightly different limits). Topbrands PLC Limited

• Application: direct-acting actuator for damper sequencing, air-handling units, fan control, mixing boxes, etc. Astra Automatyka+1

• Note: This product line is marked discontinued, with Honeywell providing product support until October 2029. buildings.honeywell.com

Applications & Suitability:

• Ideal for HVAC systems requiring pneumatic control of dampers where electric actuators may not be suitable.

• Suitable for building automation retrofits or new installs in industrial/commercial ventilation systems.

• Appropriate where pneumatic infrastructure (compressed air or instrument air) exists.

Installation & Maintenance Considerations:

• The actuator should be mounted securely to the damper shaft or linkage, following manufacturer’s guidelines for orientation and linkage geometry (check full spec sheet).

• Supply air quality matters: ensure clean, dry, filtered air to prevent diaphragm or sliding element wear.

• If replacing older actuators, verify pressure rating, force output and linkage geometry match or are compatible.

• Since it’s a “discontinued” part, verifying availability of spares or suitable replacement models is prudent.

• Confirm matching variant: the “/3” or “-3” suffix (e.g., MP904A5047-3) may indicate specific stroke, spring return or mounting variant. Topbrands PLC Limited+1

Compatibility & Variation:

• The MP904A series comes in various sizes (A, B, C, D) for different force ranges/strokes; ensure your model matches required damper size and torque. Astra Automatyka

• Ensure “direct-acting” vs “reverse-acting” type matches your system.

• Verify the actuator stroke (how many degrees or mm of damper travel) required for your damper; not all variants have identical stroke.