Zone Valves

A hydronic radiant zone valve is a critical component in a hydronic (water-based) radiant heating system. It is an electrically or thermostatically controlled valve that regulates the flow of heated water to different zones in a radiant heating system.

Key Features & Functionality:

1. Zone Control: It allows different areas (zones) of a building to receive heated water independently, improving comfort and energy efficiency.
2. Electric or Thermostatic Operation: Typically controlled by a thermostat, the valve opens or closes to regulate water flow to the designated zone.
3. Types: Common types include motorized zone valves, thermostatic actuators, and solenoid valves.
4. Materials: Made of brass, stainless steel, or composite materials to withstand constant water exposure and varying temperatures.
5. Integration with Pumps & Boilers: When the valve opens, it often triggers the boiler or circulation pump to deliver hot water to the zone.

How It Works:

• When heat is needed, the thermostat signals the zone valve to open.
• This allows hot water from the boiler to flow into the zone’s radiant tubing.
• Once the desired temperature is reached, the thermostat signals the valve to close, stopping water flow.