Finally decided to do a full rebuild in stainless and include a Herms for better control.HLT, Mash Tun, and Herms are insulated with 13mm nitrile rubber.CFWC is home made as is all the other vessels.Brewery capacity 60 litres. 98 litre kettle and HLT, 50 litre Mash Tun and 10 litre Herms with 5.5m of 1/2" copper.