now its been a while (my first job @14/15 was in an irrigation trade store) but from vague memory BSB?? (a thick walled dark grey pipe with threaded ends used mainly for sprinkler risers or higher pressure connections, but i also used it in my old pneumatic spark plug cannons...they were the beez kneez- button trigger solenoids, light weight & ergonomic, rifled barrels, @ 350psi put spark plugs through a wooden fence from 20m and worked a treat with my soda bulb grenades. mmmm)
anyway, i think they make a 50mm ID product which would be a hell of a lot stronger than the PN40 plumbing stuff |