Pentair High Flow Manual Air Relief Valve with Instruction Labels

The Pentair High Flow Manual Air Relief Valve with Instruction Labels (part number 98209800 or 98209804 for universal upgrade kits) is a crucial safety and diagnostic assembly mounted directly to the top bulkhead of major Pentair cartridge and D.E. filtration systems, including the Clean & Clear, FNS Plus, and Quad D.E. series. Molded from a rugged, UV-stabilized, glass-reinforced engineering polymer, this multi-component valve features an integrated top port designed to thread in a system pressure gauge, a high-capacity internal vent body, and an ergonomic manual relief knob. Its primary structural and operational role is to allow pool technicians to manually vent compressed, dangerous air pockets out of the filter tank during system startup, and to securely close once water reaches the top to maintain a pressurized, leak-free hydraulic seal up to 50 PSI. The accompanying high-visibility adhesive instruction labels wrap around the valve base, providing critical safety warnings, step-by-step bleeding directions, and proper directional alignment cues to ensure safe handling under pressure. Built to resist harsh outdoor elements, solar degradation, and heavy chemical scaling, this complete air relief assembly remains relatively light, carrying a product weight of approximately 0.30 to 0.40 pounds and an all-inclusive shipping weight of up to 0.85 pounds depending on whether the kit includes retro-fit installation adapters.