Pro-Pal valves are your best choice for efficient installation and system operation, and for helping to control costs. Pro-Pal Valves combine commonly used components into a single forged brass alternatives that will save time and space in any installation. Instead of just building your next piping system, innovate it with Pro-Pal Series Valves. Each union end connects to the appliance. The insulator ring stops the electric flow that occurs when two the dissimilar metals are joined. The user may then transtion to copper pipe, save a fitting and still meet local codes. The joint can also be removed for applications that require future removal or maintenance of the pipes. Designed for use with water, oil, glycol mix in residential or commercial plumbing and heating systems. Refer to specification sheets for additional technical information. All Webstone products are backed by a limited lifetime warranty.