53L

Pressure Relief Valves with Test Lever

  • Valve protects domestic storage tanks and tankless water heaters from excessive pressure
  • Furnished with test lever
  • ½ in NPTF
  • Model available for outdoor solar applications

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 53L

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet (see literature section above) 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