Compatible with ForIntex filter pump models 28635EG, 28633EG, and 28671EG. - Easy replacement: the piston valve assembly is easy to replace and ensures a secure connection between the filter pump and the filter. - Construction: Made from materials, these piston valves are built to withstand the rigors of above-ground swimming pools. - Optimal functionality: the piston valves effectively regulate the water flow, supporting optimal performance of the filter pump. Use scenarios: - Replace worn piston valves in an above-ground pool setup to restore steady flow and a secure seal. - Maintain or upgrade your ForIntex filter pump during routine maintenance or seasonal pool opening to ensure consistent filtration. - Use as a direct compatibility upgrade when replacing original valves to maintain pump performance and leak-free operation.