Resideo VCZZ1500 2-Way Valve Cartridge 34-203°F

The Resideo VCZZ1500 is a 2-way valve cartridge for VC Series hydronic zone valves, rated for extra-low-flow control across a temperature range of 34°F to 203°F and a pressure rating of 300 PSIG. It is designed for hydronic systems including fan coil units, terminal reheat coils, and zone heating/cooling applications, providing accurate flow regulation and temperature control for water service systems. This cartridge is an OEM replacement for Resideo VC Series valve bodies and cross-references to OEM part numbers VCZAL1500, VCZAM1500, and VCZAR1500. Symptoms indicating replacement is needed include a valve not opening or closing properly, restricted flow, temperature control issues, or a zone not responding. Installation is rated intermediate difficulty and requires basic tools, with a cartridge wrench recommended along with a compatible VC Series valve body.