OUTDOOR WOOD FURNACES NEED PUMP AND WHEN YOU BUY YOUR OUTDOOR WOOD FURNACE PUMP DONT FORGET THE OUTDOOR WOOD FURNACE PUMP FLANGE. YOU ARE BUYING A FLANGE FOR THE USE WITH YOUR PUMP. THESE FLANGES ARE MADE OF BRASS AND HAVE FULL PORT STAINLESS STEEL BALL VALVES BUILT IN. GASKET INCLUDED. THIS IS A SET OF 2 ONE FOR EACH SIDE OF THE PUMP BOTH WITH BALL VALVES