Compatibility - These piston valves are designed to fit Intex Filter Pump models 28635EG, 28633EG, and 28671EG. Easy replacement - The piston valve assembly is straightforward to swap, providing a secure connection between the valve and the filter pump. Durable construction - Built from durable materials to withstand the demands of outdoor, above-ground pool setups. Effective water flow regulation - The piston valves regulate water flow to support optimal pump performance and filtration efficiency. Use scenarios - Replacing a worn or leaking valve in an Intex filter pump to restore proper flow and pump reliability. - Installing as part of seasonal pool setup to ensure correct valve fit and secure connections with the listed Intex models. - Refreshing aging filter systems to maintain steady water flow and filtration efficiency during pool operation.