The BrewBuilt Whirlpool Return Fitting allows you to recirculate wort in your boil kettle without sacrificing one of your tri-clamp ports. Install it in any tri-clamp kettle's thermometer port and attach your preferred valve to the side inlet. The front of the fitting can be capped off with a 1.5" T.C. end cap, or you can pair with the BrewBuilt Thermowell Offset to install a thermometer or temperature probe.