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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
Proper installation requires checking the 1" NPT connections and verifying gas pressure using a digital manometer to meet the manufacturer's specified 1
An external upstream regulator is typically only needed if the line pressure exceeds the 5 PSI maximum inlet rating
Most failures result from insulation dry-rot or vibration-induced chaffing
meaning it is engineered to open the electrical circuit at a 170°F temperature rise and automatically reset upon a 40°F drop (closing at 130°F)
Always check the localized parts list for your specific serial number
Watts 0257564 Valve 326058-757 Proper installation requires checking theThe Watts 0257564 Valve (Model 140X 5) is a heavy duty, automatic reseating temperature and pressure relief valve designed for high capacity commercial water heating systems. Engineered with a durable bronze body and 3 4 inch FNPT inlet outlet connections, this valve provides critical protection for domestic hot water supply tanks. It features an ASME rating of 1,438,000 BTU hr and a CSA rating of 205,000 BTU hr, ensuring it handles massive thermal
US$ 29.99
US$ 99.00
US$ 149.00