Pentair Air Relief Valve and Gauge Assembly

The Pentair Air Relief Valve and Gauge Assembly is a vital safety and system-monitoring component designed for Pentair pool and spa D.E. (diatomaceous earth) and cartridge filters, including FNS Plus and Clean & Clear models. This heavy-duty assembly features a manual air relief valve that allows operators to safely bleed off accumulated air pressure from the filter tank during system startup, alongside an integrated, easy-to-read pressure gauge that tracks the filter's operational status and signals when a backwash or cleaning cycle is required. Constructed from robust, chemical-resistant polymer materials paired with a durable brass-threaded connection, the complete assembly is engineered to withstand high-pressure environments and harsh outdoor elements. The unit is exceptionally lightweight for its durable construction, carrying a total weight of approximately 0.60 pounds (about 9.6 ounces), making it a manageable and straightforward drop-in replacement part for maintaining optimal pool filtration safety.