Piping on gf cf chiller

[itry]

What is the type of hose used on a grain father could terflow chiller. My has a damage hole so I need to replace it. Any one had to replace it before?

 

[peebee]

The water (coolant) pipes? They are using polyurethane tubing, commonly used for pneumatic tubes. I use the 6 and 8mm OD stuff for my CO2 lines (more flexible than that polythene stuff), Grainfather appear to use 10mm OD? Apparently there are two forms and one doesn't like being wet (but I've never come across it).

The pipes that connect to the Grainfather boiler/masher? Silicone. [EDIT: Sorry, didn't say size: About 12mm OD, 2mm wall thickness. Often described, on Ebay, as "milk hose".]