Always trust Wood-Furnaces.net when looking for replacement wood furnace parts
, like this Hot-Tube Domestic Water Pre-Heater
, which connects to present domestic hot water tank to provide gallons of piping hot water. Weldless boiler pipe has working pressure of 1200 lb./sq. in. Kit includes Stainless Steel pre-heater pipe with threaded ends, 4 Cast Iron nuts, 2 flat washers, 2 high temp gaskets, and a detailed installation manual with mounting templet. (Not to be installed on DAKA furnace model #311,411, 731 or 832 due to double back wall design).