The Pentair Rainbow R36006 Vac-Mate skimmer vacuum gauge is designed for compatible Vac-Mate skimmer applications where a vacuum-reading component is needed. A gauge like this is useful because it helps monitor suction or vacuum conditions, giving the user a better sense of how the skimmer vacuum setup is performing.Replacement is often needed when the original gauge becomes unreadable, damaged, unreliable, or no longer responds correctly. Installing the correct Pentair/Rainbow gauge can help restore monitoring capability and improve confidence in system setup and adjustment.This OEM vacuum gauge is a practical replacement for compatible Vac-Mate applications that need dependable suction-reference feedback during operation. OEM Pentair/Rainbow Vac-Mate vacuum gauge Fits compatible Vac-Mate skimmer applications Helps monitor vacuum or suction conditions Useful when the original gauge is damaged or inaccurate Supports cleaner and more dependable system adjustment