I am looking at moving to AG and am just about ready to purchase an urn and stockpot and thought I would just mention my plans just incaswe there is something I have missed (especially with regards to the size of vessels).

Firstly the plan is to buy a Birko 40l urn and 70L Robinox SS pot - I already have a mash tun just about ready (40 litres)

Have I chosen these sizes to enable me to do both single or double batches - well thats the plan - Is a 70 L stockpot to big for single batches?

Also looking at using the italian spiral burner with med pressure reg

I am going to get a 1/2 inch ball valve welded onto the 70 L pot - what position (ie how high of the base) should I weld on the ball valve?

70L is probably bigger than "ideal" for single batches - but it is a pretty damn good compromise size for someone who will mainly brew singles but wants the ability to do doubles. I have a 65L pot and thats why i chose that size - mostly singles, but able to do doubles.

Your burner will be more that sufficient - Your urn is perfectly sized for a single batch, but for a double you will most likely need to top it up after you mash in so you will have enough water to sparge with. Sometimes it will be fine, others you will fall an annoying few liters short without a top up. Depends a little on how you plan to brew.

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