40L

Automatic Reseating Temperature and Pressure Relief Valves and Flood Sensor

  • Packaged with SentryPlus Alert discharge line flood sensor
  • Bronze body
  • NPTF male inlet and female outlet connections
  • Coated thermostat
  • Multiple thermostat lengths available
  • Automatic reseating feature
  • Tamper-resistant bonnet screws
  • Test lever
  • Temperature Relief: 210 degree F (99 degree C)
  • Pressure Relief Range: 75 to 150psi (5.2 to 10.3 bar)
  • Standard Pressure Settings: 75, 100, 125, or 150psi (5.2, 6.9, 8.6, or 10.3 bar)

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 40L

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