Purge & Fill is another step-saving innovation from Webstone. The 7-in-1 valve assembly allows the user to simultaneously drain, flush and refill any plumbing, hydronic or solar system. It eliminates six leak paths and saves nearly an hour of labor. Available in IPS and SWT in sizes 3/4” to 1 1/2” and guaranteed for life. Founded in 1954, Webstone now operates as a brand of NIBCO.