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340

Automatic Reseating Temperature and Pressure Relief Valves

Series 340, 340X Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters. They feature a bronze body with NPT male inlet and NPT female outlet connections, stainless steel spring and thermostat tube, tamper-resistant bonnet screws, automatic reseating feature, and test lever. Model 340 has a 3 in. (80mm) thermostat. Model 340X has an 8 in. (200mm) thermostat. Series 340, 340X are ASME rated and CSA listed. Temperature Relief: 210 degreeF (99 degreeC). Pressure Relief Range: 75 to 150psi (5.2 to 10.3 bar). Standard Pressure Settings: 75, 100, 125, or 150psi (5.27, 7.03, 8.79, or 10.55 bar).

Features

  • Valve provides automatic temperature and pressure protection to hot water storage tanks and water heaters
  • Bonnet screws are tamper-resistant
  • Stainless steel thermostat tube
  • Automatic reseating feature

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 340

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