The “Union Drain Ball” is the newest member of Webstone’s Pro-Pal line of step-saving valves. It features a ground joint union and a high-flow independently operated ball drain.



The unique “Union Drain Ball” is the newest member of Webstone’s Pro-Pal line of step-saving valves. This valve features a ground joint union for easy assembly and dismantling of the system, and a unique high-flow independently operated ball drain that allows you to drain down part of a system or service any type of peripherals, such as heaters, fan coils, etc. The valve features heavy brass construction with full port and is rated for 600 psi WOG. Ideal for hydronic systems or any piping system requiring fit, function and flexibility.