The Praher SM1-PP2 multiport valve is designed for compatible 1-1/2 inch PacFab plumbing systems and gives you a direct way to restore central flow control when the original valve has reached the end of its service life. Multiport valves are central to how a filtration system behaves, so fit and compatibility matter.This model is useful because it is built around PacFab-style plumbing rather than forcing a one-size-fits-all solution. That can help preserve alignment, reduce installation friction, and keep the service job focused on restoring function instead of reworking the surrounding plumbing.It is a smart replacement when the old valve leaks, feels rough when turning, or no longer separates operating positions cleanly. Praher SM1-PP2 multiport valve Designed for compatible 1-1/2 inch PacFab plumbing Helps restore proper valve control in filter systems Supports cleaner, more direct replacement work Good solution for aging or unreliable original valves