Pump   The pump for this system is a March 809HS designed for Beer, Beer, and More Beer (an Internet brewing equipment company). It has a polysulphone housing that is food grade and can easily withstand the temperatures present in this brewing environment. It is used to transfer the sparge water from the Hot Liquor Tun and also the wort from the Mash Tun to the Heat Exchange Coil. The instruction manual for it is in PDF format here. I have also included a 1/2" brass check  valve on the output side of the pump. This keeps a siphon from occurring during the sparging process.   Surrounding the pump is a splash shield that is made from a sheet of bent aluminum. The head of the pump is waterproof but the body must be protected from liquids.

Quick Disconnect Hoses  All of the hoses that are used for this system incorporate the use of Quick Disconnects.  This makes it very easy to use one pump in the system and to quickly change the configuration for the different brewing stages.  The Quick  Disconnects on each hose end are made with a 1/2" hose barb to 1/2" male npt connector followed by a 1/2" female npt to 3/4" hose male connector followed by a standard 3/4" hose Quick Disconnect.

Male Quick Disconnect   The male side of the Quick Disconnects that are used in this site are usually attached to some sort of copper tubing.  This dictates that they be connected with a compression fitting of some sort.  This particular example uses a 1/2" compression to 1/2" male npt followed by a 1/2" female to 1/2" male npt adapter followed by a 1/2" female npt to 3/4" hose connector followed by a standard 3/4" male hose Quick Disconnect.