Counterflow Chiller - Wort through the central 1/2 inch tube and cooling water going the other way through the 18mm hose the contains it.
Heard of Phil's Fittings? - this is a Bill's Fitting.20mm x 15mm x 15mm T piece. Had to solder a 3/4 stub in the right port and 1/2 in the top to connect the CW hoses.
Initially tried soldering the left hand port to the 1/2 tube that runs from left to right but the heat started melting the hose on the right. Ended up using some 1/2 vinyl in some 3/4 hose and a couple clamps to stop the drips - learning - don't bother soldering this, the two bits of hose and the clamps seem to be good enough (and you can pull it apart!)
