Thanks for the replies, I thought about hydraulic adaptors due to the pressure, nice to know that I am on the right track.

Ed, I was thinking about using 7050-T7651 or 7075-T6 due to their high tensile strength, what do you use?

David, The problem to use plastic tubing is the layout. On a small manifold it will probably fit the bottle, SPRV, Solenoid Valve, the RAM and, for the RFL, a gauge (), also it will be shock mounted. I will probably use those plastic hoses from the buffer to the dump valve, just need to find a place to put it! LOL! The costume is a custom made Freakazoid! My brothers always said that Dexter resembled me, so when the opportunity came, Freakazoid was reborn. Probably in July I will compete in Brazil dressed as such, the organizers normally wear costumes.

Back to the robot, the RAM exhaust is will be handled by the main valve, it is a really unusual design, its triples as admission, exhaust and check, depending on the position. It is similar to a QEV spud valve, mixed with Trent Elis' design, although different enough to be original Isn't it weird how ideas come to different people at the same time? I thought about a QEV integrated RAM just when I decided to move to the UK, but since my knowledge of high pressure pneumatics were really limited, it took a long time to perfect the idea.

Definitely all the fittings will be BSPP, just the paintball gauge that will be NPT - I think - but it will use a BSPP-NPT adaptor. The firing valve will probably be a FAS 04-211-101-40 12V 10W, triggered at 19.8~23.1V by a RC Switch. I still have to calculate the time needed to empty the main valve chamber through this firing valve and do some flow analysis for the whole system.

I found these CGA320 adaptors on eBay, does anyone knows were to buy something similar in the UK? Just in case I buy this, is it possible to chop the NPT thread and machine a new BSP G1/4 on it? I came across some CGA320 - BSP G1/2 adaptors from Air Liquide, proper to use with CO2, but they are not the swivel type, any suggestions?

Cheers,
Eduardo