Watts Series 3L Pressure Relief Valves

Series 3L and 53L are used for protection against excessive pressure on domestic storage tanks or tankless water heaters. Similar in construction to Watts Model 10L, the Model 3L has no temperature relieving element. Model 53L has the basic design as Model 3L except it is furnished in 1⁄2" (15mm) size and does not comply with A.S.M.E. requirements. Pressure range is 75-150psi (5.2-10.3 bar). Series 3L and 53L come in standard settings of 75, 100, 125 and 150psi (5.2, 6.9, 8.6 and 10.3 bar). These Pressure Relief Valves are popularly used in conjunction with the Model 210 gas shutoff valve on gas water heaters to shut off gas to heater if water heater temperature exceeds 210°F (99°C).

Features:
 

• Furnished with test levers
• Relieves excessive pressure on storage tanks
• Relieves excessive pressure on tankless water heaters
• Compatible with Model 210 gas shutoff valves