These coils can be used in many ways including Jockey Boxes. The tubing is made out of 304/304L stainless and is measured 1/4" OD (Outside Diameter). The coil diameter is an 4" outside diameter.
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!