Description
The Honeywell MP958A1009 is a low-force, direct-acting valve actuator designed for precision control in pneumatic systems. Operating with a 2–5 PSI spring range, it offers reliable spring return functionality for safe and consistent damper positioning.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Honeywell |
| Category |
HVAC Controls |
| Part Number |
MP958A1009 |
| Subcategory |
Pneumatic Actuators |
| Actuator Type |
Valve |
| Actuator Force |
Low |
| Action |
Direct Acting |
| Spring Range |
2–5 PSI |
| Fail Safe Mode |
Spring Return |
| Maximum Safe Operating Pressure |
30 PSI |
| Air Connections |
Barbed fitting for 1/4 in. O.D. plastic tubing |
| Diameter |
2-1/4 in. |
| Height |
3-3/16 in. maximum |
| Construction |
Durable Honeywell design |
| Weight |
3 lbs |
Information About MP958A1009
The MP958A1009 is part of Honeywell’s pneumatic actuator series, specifically engineered for valve and damper control in HVAC applications. It features a compact body measuring 2-1/4 inches in diameter and 3-3/16 inches in height, allowing installation in space-restricted areas. With a direct-acting mechanism, it responds proportionally to increasing air pressure, and its 2–5 PSI spring range ensures precise modulation in low-pressure control loops. The actuator includes a spring return fail-safe mode for automatic repositioning in the event of air supply loss, and it connects via a barbed fitting for 1/4-inch O.D. plastic tubing to simplify pneumatic integration. Designed for durability, it supports up to 30 PSI maximum safe operating pressure without compromising performance.
Key Features:
-
Low-force pneumatic control: Specifically engineered for applications where minimal actuator force is required, ensuring smooth operation in sensitive valve or damper mechanisms without overloading the system.
-
Direct-acting operation: Responds proportionally to increases in control air pressure, moving the actuator stem in a consistent and predictable manner to deliver precise valve positioning.
-
2–5 PSI calibrated spring range: Provides accurate modulation in low-pressure pneumatic systems, allowing fine adjustments for optimal air balancing and HVAC performance.
-
Spring return fail-safe mode: Uses a built-in spring mechanism to automatically return the actuator to a predetermined safe position when the air supply is lost, protecting the system during power or control failures.
-
Compact form factor for tight spaces: With a diameter of just 2-1/4 inches and height of 3-3/16 inches, it can be installed in confined mechanical spaces without the need for extensive mounting modifications.
-
High-pressure durability: Built to safely withstand up to 30 PSI without damage, offering a substantial safety margin for demanding pneumatic environments.
The MP958A1009 delivers the reliability and precision required for accurate pneumatic valve and damper control in HVAC systems.
