Watts 0364195 Valve Els PW 17895 What is the difference between

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Watts 0364195 Valve Els PW 17895 What is the difference betweenThe Watts 0364195, also identified by model 415 1 1 4 15, is a high capacity steam pressure relief valve engineered specifically for low pressure steam heating boilers. This ASME Section IV rated valve features a 1 1 4 inch NPT threaded inlet and a 1 1 2 inch NPT outlet, providing a substantial discharge path for overpressure protection. Set at a precise 15 PSI pressure relief, this unit is rated for a steam capacity of 1,265 lbs hr, ensuring it can