Carvin CFR 150 150 sqft 150 GPM 2" FPT Cartridge Filter (94222775) manifolds The Waterco 2 inch top The Waterco 2 inch top and side mount valve spring is designed for compatible multiport valve applications where the spring element inside the valve needs replacement Including the flange nut kit helps streamline the rebuild and supports cleaner reassembly A filter like this is useful because it helps capture suspended debris from the water while preserving the easier cleaning style that makes cartridge filtration attractive in many equipment setups It is a practical option for installations that want dependable filtration without moving to a different filter style