100XL

Temperature and Pressure Relief Valves

  • Bronze body construction for superior strength and corrosion resistance
  • Stainless steel spring
  • Valve provides automatic temperature and pressure protection to hot water storage tanks and water heaters
  • Accurate thermostat with special thermo-bonded coating

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA