Honeywell 312817T Actuator Assembly

The Honeywell 312817T Actuator Assembly is a critical pneumatic component designed for precise control within commercial HVAC systems. This assembly features a broad 3-10# spring range (21 to 69 kPa), making it ideal for low-pressure sequence control and modulation. Built for direct compatibility, it is the standard replacement for VP513A, VP513B, and VP517 series valves. With a standard 1/2 inch stroke, it ensures reliable positioning and mechanical force for valve stem travel. Technicians should note that the 312817T is identical to 312817T/U, with the "U" suffix simply indicating a universally packaged version of the same industrial-grade hardware. This heavy-duty assembly is engineered to withstand the rigors of continuous pneumatic operation, providing the necessary torque and resilience for steam or water flow regulation. Whether you are performing a scheduled retrofit or an emergency field repair, the Honeywell 312817T valve actuator provides the exact OEM specifications required to maintain system pressure balance and operational efficiency.

• Broad Compatibility: Seamlessly integrates with VP513A,B and VP517 Series valves without the need for additional adapters.
• Optimized Control: The 3-10 psi spring range allows for accurate calibration in pneumatic control loops.
• Direct OEM Replacement: Replaces the 312817T/U model, ensuring your pneumatic actuator maintains original factory performance markers.
• Robust Stroke Capacity: A standard 0.5-inch stroke provides sufficient travel for effective valve modulation.

Is the 312817T compatible with various Honeywell valve bodies?
Yes, this actuator assembly is specifically designed for use with the VP513A, VP513B, and VP517 series. Always verify the valve body series before installation to ensure proper stem engagement.

What is the difference between the 312817T and the 312817T/U?
There is no functional or technical difference between these two model numbers. The "U" designates a universal part number used for wholesale distribution, but the hardware, spring range, and stroke length are identical.

Can this actuator be used in high-pressure pneumatic systems?
This unit is calibrated for a 3-10# spring range. For systems exceeding these pressure requirements, ensure your controller is properly regulated to avoid damaging the internal diaphragm or spring assembly.

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.