1″ 2-Way Zone Sentry Press-Zone Valve, Normally Closed

Taco Z100P2-1 Zone Sentry® Valve – 1″ Press, 2-Way NC, 24V Zone Valve for Hydronic Heating

The Taco Z100P2-1 is a 1″ press-connect, two-way normally closed zone valve designed for use in closed-loop hydronic systems. Engineered for precision control and reduced power consumption, it integrates a microcircuit-controlled, gear-driven actuator to provide reliable, low-energy on/off flow control in a wide range of heating system applications.

This model supports 24V control signals and is compatible with standard 24V thermostats and relay panels. The Z100P2-1 is suitable for baseboard, radiant, fan coil, air handler, and panel radiator systems. It is designed for vertical or horizontal orientation and allows up to 12 valves to be powered by a 40VA transformer (subject to total VA load).

Key Features

• Microcircuit Logic: Electronic control for low power draw and accurate valve positioning
• Gear-Driven Actuator: Quiet, high-torque motor delivers reliable on/off control
• Manual Override: Integrated lever for manual operation during commissioning or servicing
• Press-Fit Connection: 1″ press ends for copper tubing installations using standard press tools
• Visual Position Indicator: Allows confirmation of valve status at a glance
• Diagnostic LED: Multi-function indicator provides feedback on operation and fault status
• Low VA Draw: Up to 12 Zone Sentry valves can operate on a single 40VA transformer

Technical Specifications

• Model: Z100P2-1
• Connection Type: 1″ press
• Valve Type: 2-way, normally closed
• Control Voltage: 24V AC
• Application: Closed-loop hydronic systems only (not for potable water)
• Pressure Rating: Suitable for standard hydronic pressures (up to 300 psi static)
• Max Ambient Temperature: 120°F

Installation Guidelines

Installation of the Z100P2-1 requires standard press tools and a compatible 24V control system. The actuator is replaceable without draining the system. For optimal results, installation should be performed by a licensed HVAC or hydronic professional. Wiring must comply with local electrical codes and system VA limitations should be observed when connecting multiple valves to a transformer.

Contractor Notes

The Taco Z100P2-1 is designed with the installer in mind. The actuator mounts to the valve body without the need for linkages or gear calibration. It ships in the closed position and includes a manual open lever for purging. The valve body and actuator assembly are rated for long service life under typical hydronic load cycling.