Waterway Check Valve With Straight Body [2" Slip or 2 1 2" Spigot] (600 7010) slicevalves Skimmer collar for compatible Jacuzzi Skimmer collar for compatible Jacuzzi and Carvin Deckmate applications The Hydro Quip Versi Heat heater retrofit kit is designed for compatible heating applications where a 13 inch by 2 inch heater with a 9 pin connection is needed Selecting the right Waterway straight body valve helps support cleaner system layout and dependable protection against unwanted backflow A straight body check valve is useful where the system needs reliable one way flow control without introducing an unnecessary turn in the line