Honeywell 315911-00021 Replacement Cup

As a technician, you know that maintaining precise control in building automation starts with identifying the correct OEM components. The Honeywell 315911-00021 Replacement Cup is a critical hardware component specifically engineered for the Honeywell VP525, VP526, VP527, and VP531 series pneumatic valve actuators. Unlike generic alternatives, this replacement cup with keyhole ensures the structural integrity and alignment required for Honeywell pneumatic valve actuators to deliver accurate proportional control of steam or water.

The 315911-00021 features a specialized keyhole design that facilitates a secure, non-slip attachment to the valve stem assembly, minimizing mechanical hysteresis and ensuring system reliability in high-demand HVAC environments. Whether you are performing routine maintenance on a VP525 valve actuator or repairing a VP531 series unit, this Honeywell pneumatic part is built to original OEM quality standards for seamless field replacement. By using genuine Honeywell actuator accessories, you preserve the precise stroke and calibration of your control valves, preventing the premature wear often associated with off-spec components.

Key Benefits

• Precise Fit: Specifically engineered for VP525, VP526, VP527, and VP531 series actuators to eliminate alignment issues.
• Secure Installation: The keyhole configuration provides a reliable mechanical connection to the valve stem, ensuring consistent actuator response.
• Commercial Grade Durability: This genuine Honeywell replacement part is manufactured to withstand the constant cycling typical of building automation setups.
• Direct OEM Match: Avoid the guesswork of cross-referencing by using the exact 315911-00021 part number for your repair.

Common Questions

Is the 315911-00021 compatible with other Honeywell actuator brands?
This cup is specifically designed for the VP525 through VP531 series. Using it on other series may result in improper stem engagement or restricted stroke movement.

What is the purpose of the keyhole design?
The keyhole design is a mechanical safety and alignment feature that locks the cup into position, preventing rotation or slippage during high-pressure or high-temperature operation.

Can this part be used in steam applications?
Yes, when paired with the appropriate VP series valve and high-temperature yokes if required, this component is suitable for both steam and hydronic control systems.

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.