Resideo CA100A116 Valve Cartridge

The Resideo CA100A116 Valve Cartridge is a field-serviceable replacement component specifically engineered for legacy Honeywell V100 Series thermostatic radiator valves. For technicians servicing "old style" valve bodies in 1/2-inch and 3/4-inch sizes, this plastic TRV replacement cartridge is the essential part for restoring precise flow control and pressure regulation without requiring a full valve body replacement. It replaces the discontinued CA108A1000 model, ensuring long-term compatibility with existing hydronic infrastructure. Installation is straightforward for contractors; you can swap the unit using a 19 mm socket or the specialized MT100C cartridge changer. Note that if utilizing a standard socket, the system must be fully shut off and drained down. This hydronic heating valve part is manufactured to the high tolerances required for consistent performance in residential and commercial radiator circuits, maintaining the integrity of the Honeywell Home hydronic system and preventing common seat leakage or sticking issues.

Key Benefits

• Specifically designed to fit V100 series 1/2" and 3/4" old-style valve bodies for perfect seat alignment.
• Compatible with the MT100C cartridge changer tool, allowing for efficient field maintenance and reduced labor time.
• Serves as the direct technical successor to the CA108A1000, ensuring zero-modification retrofitting.
• Optimized for thermostatic radiator valve repair, restoring accurate temperature modulation in hydronic loops.
• Robust plastic construction resistant to mineral buildup common in older closed-loop heating systems.

Common Questions

• Which valve models is this cartridge compatible with? It is engineered exclusively for the old-style Honeywell V100 series thermostatic radiator valves in both 1/2-inch and 3/4-inch configurations.
• Do I need to drain the system to install the CA100A116? If you use a standard 19 mm socket, you must shut off and drain the system. Using the MT100C changer tool may allow for different procedures depending on system pressure.
• Will this replace my older CA108A insert? Yes, the CA100A116 is the designated replacement for the CA108A1000 insert.

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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.