We use Therapy Equipment demand valves and where needed the regulators. The demand valve has a service kit which is fitted every three years and we replace the hose at the same time. The Diamond regulator is easy to service every four years. The flow, pressure and leak tests are straight forward using readily available equipment.
The demand valves are fairly robust although they have changed the design to incorporate the handle and hose assembly.
What flow, pressure and leak test spec/tolerances do you test to Adrian?
