Webstone 58644 1" x 1" Sweat (CxC) Pro-Pal Primary/Secondary Purge Tee Pro-Pal valve - coud be installed between closely spaced tees. Webstone 58644 valve ensures highest flow rate becasue of full port solid flow channel construction. Ideal for primary/secondary in mod-con boiler systems. Guaranteed for Life.
Temperature-Pressure Table of 58644 Primary/Secondary Purge Tee Pro-Pal valve: