Model - inflow rightInflow:1 x 3 way inflow pumpflange ball valve with thermometer hand wheel (red thermometer ring)2 x sleeve nut and seal1 x pumpflange ball valve with insulated T grip.By the 1" and 1 1/4" models the cheaper 1" pump is always used(same capacity as a 1 1/4" pump)Return flow:1 x 4 w ...