Watts - 0371271 - 530C 1/2" Poppet Style Adjustable Relief Valve 92980020 The patented new flue cap

The patented new flue cap is designed to improve air flow and eliminate excessive moisture and debris that can rust or damage high efficiency gas furnaces

or architectural feature being illuminated

IP65 rating and 25

Flo-Watch™: This functionality in the ESP-ME3 Controller uses information from the FG100 to learn the flow

Watts - 0371271 - 530C 1/2" Poppet Style Adjustable Relief Valve 92980020 The patented new flue capChoose Watts 530C "Calibrated Pressure Relief Valve when your project calls for bypass thermal expansion relief. Spring operated; resets after quietly releasing pressure. Maximum working temperature is 180 degrees F. From the manufacturer: MFR Part # 530C 1 2 Item Model # 530 C 1 2". Calculations show pressure reducing valves can save as much as 30% on domestic water heating costs, prevent water waste and perhaps even lower municipal sewer usage fees.