Dwyer Instruments' Series ZV2 and 3ZV2 zone valves help control temperatures in HVAC systems

Dwyer Instruments' Series ZV2 and 3ZV2 zone valves are designed for use with temperature controllers and thermostats to control temperature in HVAC systems. The valves control the flow of hot and cold water in the HVAC system, thereby controlling temperature. Units come in two- and three-way construction, and incorporate a bidirectional motor. They feature a turnkey removable actuator design for ease of installation and are available in 1/2-, 3/4-, 1- and 1-1/4-inch sizes.

Zone valves incorporate manual overrides, and are for use with supply voltages of 120 VAC, 24 VAC, or 220 VAC. Inputs available are floating or modulating with 4 to 20 mA or 0 to 10 VDC. Modulating valves feature a motor timer that automatically turns off the motor after the full stroke to extend motor life.

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