We've separated our coil diameters as different items to make purchasing a little easier. You'll find all sizes and configurations under the coiled tubing/ HERMS coil section.
This is your standard HERMS coil with 2 horizontal bends vertically inline. Two holes are required in the side of your kettle for weldless or welded fittings. The tubing is made out of 304/304L stainless and is measured 1/2" OD (Outside Diameter). The coil diameter is a 12-1/2" diameter and works great for 16-1/2" diameter kettles and up. The horizontal bends add about 2-1/2" to the overall diameter of the coil and don't forget the space your fitting connections will take up as well.
Using a HERMS coil eliminates the need for a burner under your mash to maintain temperature and it will also help clarify your wort. While you mash, your wort will travel through the coil which is installed in your HLT (Hot Liquor Tank). The HLT will be hot and ready for sparging so you can also maintain your mash temperature with this as well. While your running your wort through your coil your also filtering giving you great clarity. HERMS systems help increase your efficiency and get you the original gravity your trying to achieve.
That's not all a HERMS coil can do, it can also cool! Simply fill your HLT with ice and you've creating a cooling coil!
The 12-1/2" diameter coil measures 4"-5" in height. We recommend waiting for your coil to arrive before you drill the holes into the kettle.