Description
Watts F556018 Lead Free Automatic Reseating Temperature & Pressure Relief Valve
The Watts F556018 is a 1″ lead free automatic reseating temperature and pressure relief valve engineered to provide dependable overpressure and overtemperature protection for water heaters and hot water storage systems. Designed to meet the demands of residential and light commercial applications, this valve combines proven Watts reliability with a comprehensive feature set — including a stainless steel thermostat element and a discharge line flood sensor — for a complete, code-ready installation.
Key Features
- 1″ inlet connection for compatibility with standard water heater installations
- Lead free construction meets NSF/ANSI and Safe Drinking Water Act requirements
- Automatic reseating design returns valve to closed position after a relief event, minimizing water damage and service calls
- 125 PSI maximum pressure rating provides robust overpressure protection
- 210°F maximum temperature rating guards against dangerous overtemperature conditions
- 6″ stainless steel thermostat probe for accurate, corrosion-resistant temperature sensing
- Discharge line flood sensor included for early leak detection at the relief valve outlet
Specifications
- SKU: F556018
- Brand: Watts
- Connection Size: 1″
- Maximum Pressure: 125 PSI
- Maximum Temperature: 210°F
- Thermostat Length: 6″
- Thermostat Material: Stainless Steel (SS)
- Construction: Lead Free
- Includes: Discharge Line Flood Sensor
Applications
- Residential and light commercial water heaters
- Hot water storage tanks
- Hydronic heating systems requiring T&P protection
- Installations requiring lead free compliance
Why Choose the Watts F556018?
Watts is a globally recognized leader in flow control and water quality products. The F556018 reflects that heritage with its automatic reseating functionality — a critical advantage over standard pop-off valves that require manual replacement after actuation. The included discharge line flood sensor adds an extra layer of protection by alerting building owners or technicians to any discharge events, helping prevent property damage and enabling proactive maintenance. The 6″ stainless steel thermostat ensures long-term accuracy and resistance to corrosion in demanding hot water environments.
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