The Isolator® with Round Flange features a round shape and bolt patterns specifically designed to accommodate the industry’s most popular high efficiency variable speed pumps. Choice of three flange designs with FIP, SWT, or PRESS connections in sizes 1 ½” and 2”. All valves feature Webstone’s unique uni-body design, avoiding a leak path at the flange and are GUARANTEED FOR LIFE. Learn more at WebstoneValves.com/IsolatorRound. Founded in 1954, Webstone is recognized as an industry leader for innovative design of residential and commercial valves used in plumbing, hydronic, radiant, solar and geothermal applications. These designs focus on time and space saving concepts that simplify future maintenance and upkeep of all piping systems. Some of Webstone’s trademarked and patented items include; Hydro-Core™, The Isolator®, Isolator EXP™, Pro-Connect™, and Pro-Pal® step saving valves.