[Compatible with Filter Pump]: The pool piston valve is specially designed to work with filter pump models 28635EG, 28633EG and 28671EG. The 25010 pool piston valves create a reliable connection between your pool and the filter pump system, maintaining proper water circulation for crystal clear pool water all summer long. [Effective Water Flow Regulation]: These filter pump piston valves properly regulate the water flow between your pool and the filter system. By controlling the water circulation rate, these valves help maintain proper filtration efficiency, keeping your pool water clean and clear while extending the life of your 28635EG, 28633EG, or 28671EG filter pump. [Essential Pool Maintenance Component]: Keep your above-ground pool in good condition with these replacement pool valves. Regular valve replacement helps maintain proper water circulation, reduces pressure on your filter pump, and contributes to overall pool cleanliness. An important part of routine pool maintenance for filter pump systems. Premium Construction: Made from sturdy plastic materials that resist degradation from pool chemicals and UV exposure. These pool piston valves are designed to withstand regular use in above-ground pools, providing long-term functionality throughout multiple swimming seasons while maintaining a tight seal for optimal filtration performance. Easy Installation: Easy to install and replace your old, worn valves without any complicated tools or professional help required. These pool piston valves feature a simple design that allows for quick installation, getting your filter pump back up and running in minutes so you can continue enjoying your pool without extended downtime.