Watts 0121475 Valve R-410A it provides accurate sensing within

it provides accurate sensing within the airflow stream

While the ZP31K5E is rated at approximately 2

Common indicators include intermittent sticking

" typically used for cooling/refrigeration to open the circuit on temperature drop

and environmental weathering

Watts 0121475 Valve R-410A it provides accurate sensing withinThe Watts 0121475 (Model LF174A 3 4 100) is a high capacity pressure relief valve designed specifically for protection against excessive pressure in large hot water heating boilers and low pressure vessels. Featuring a Lead Free copper silicon alloy body, this 3 4 inch NPT threaded valve is engineered for durability and compliance with modern potable water safety standards. With a factory preset relief pressure of 100 PSI and a high BTU steam