or just look at the ArdBir/Matho project as you seem to be replicating a small amount of its functionality - there are a lot of resources you could borrow from this open source project from wiring diagrams to code fragments
Well thats pretty odd - given that pretty much every licensed venue i have ever been in has used JG push fittings exclusively with very few issues - infact JG has become a sort of defacto standard for poly plumbing parts across the UK.
For those who find themselves outside the capital, in the east of Belgium in the ardennes forrest in a city called Liege - literally on the wrong side of the tracks - i highly suggest you check out 'the bar' the only bar you will ever need to visit Le Vaudree
- http://levaudree1.be/ it used to...
im running one of matho's original board, and waiting for the new one - i on my second Little Brown Pump, but will probably look to integrate a different pump when i rebuild the rig ready for the new setup.
I love it.
Having been down this route in the UK before its easier and about the same cost to get the kit from Lael, it will look a lot better screen alignment, and the bits just go together (ie wiring etc)
if you are worried about postage there are a couple of brits in on this - have a chat with barneey...
You know you can get commercial beer couplers with pressure relief valves built in?
first on one google - http://www.amazon.com/Profile-System-Coupler-Pressure-Relief/dp/B000MPNJQ0