Webstone’s patented Isolator E-X-P Service Valve Kits allow for quick, consistent quality tankless water heater installations with fewer leak paths. It is now available with Pro-Connect Push ends for fully removable connections to copper, CPVC or PEX. Users can clean, flush or diagnose any tankless water heater with ease. Products are in stock for immediate shipment. Lead Free CleanBrass is certified to meet all low-lead laws and is guaranteed for life.