I bought a Hide-a-hose last week, the solution line is stamped with ' parker 400psi' so I would believe i could put 400psi through it, but the ends are just crimped on ( the fastener which you slip over the end of the solution line then crimp the ends with pliers to make water tight) i don't believe this type of fitting would be able to take 400psi
what do you think?
Mike