GMX600NM Clamp Flange Valve Clamp Compatibility: specifically designed for Pro Series sand filters and fits models S144T, S164T, and S270T. Secure clamping: provides a leak seal with a tight fit that helps prevent air pockets and supports reliable filtration performance. Durable construction: made from rust and corrosion resistant materials to withstand outdoor use and regular operation. Convenient packaging: each clamp arrives in its own protective bag for easy storage and quick access, helping you stay organized. Use scenarios: Routine maintenance on Pro Series filters: a worn or leaking clamp to restore proper flow and prevent leaks. Seasonal pool opening or closing: ensure a secure seal when setting up or winterizing your filtration system. Outdoor pool equipment upkeep: use during upgrades or maintenance of Pro Series sand filters to maintain performance.