Webstone 1 in. x 1 in. Primary/Secondary Loop Purge TeeDesigned for residential, industrial or commercial use with water, oil or gas. This ball valve is actuated by a blowout stem and features an adjustable packing nut. The purge tee allows for placement of a ball valve between closely spaced tees. Allows for placement of a ball valve between closely spaced tees Full port solid flow channel ensures highest flow rate possible Permits power purging of individual loops in hydronic systems Precision crafting