And one more question that recently occurred to me : If I use a compressor system at higher than 50psi, Im assuming Ill need to get my buffer etc certified (or find one that already is), but what about the pressure relief valve? If I just stick a 10bar PRV somewhere in the circuit would that comply with the rules?

Thanks

-- Kev

p.s. Oh and does anyone have any LP bits (not rams unless theyre very cheap but anything else) theyre trying to offload? Cheers.