Honeywell 311750 Neoprene Diaphargm

When you're dealing with a failing Honeywell MP953 pneumatic valve actuator, the 311750 is the exact replacement neoprene diaphragm required to restore proper stroke and sealing integrity. This 8-inch, new-style component is engineered specifically for the MP953A, MP953C, and MP953E series, ensuring the rolling action remains fluid across the full pneumatic actuator range. As a veteran-grade HVAC replacement part, it is built to withstand standard temperature operating environments without the hysteresis often found in generic alternatives. Proper installation within the Honeywell 311750 housing ensures the actuator maintains its 25 psi maximum safe operating pressure, providing the precise force needed to modulate V5011 and V5013 service valves. Replacing a worn or leaking 8-inch neoprene diaphragm is standard preventive maintenance to prevent HVAC pneumatic system failure and ensure that your direct or reverse-acting controls respond accurately to branch pressure changes.

• OEM Compatibility: Precision-fit for Honeywell MP953 series pneumatic actuators (A, C, and E models).
• Optimal Performance: The 8-inch diameter rolling design ensures low hysteresis and high repeatability in commercial HVAC systems.
• Durable Material: High-grade neoprene construction provides reliable seating and a maximum temperature rating of 160?F.
• Direct Replacement: Replaces the "new style" diaphragms to prevent air leaks and restore full actuator travel.

• How do I know if my MP953 diaphragm is failing? If the actuator won't reach full stroke or you hear audible air bypass at the vent, the 311750 neoprene diaphragm likely has a tear or has become brittle.
• Is this part compatible with older 1970s style Honeywell actuators? Yes, this 8-inch diaphragm is the standard replacement for most older MP953 8-inch units, including those stamped with 311747.
• Can this be used for EPDM applications? No, this is neoprene for regular temperature service; for high-temp EPDM requirements, refer to the specific 200?F rated components.

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.