Designed for the entire range of Interspiro masks, complete with adaptors; this test equipment must be used only by competent service engineers.

Interspiro breathing valves are the only demand valves approved to EN250 and EN137 that are fully balanced. They have a response time of around 28 milliseconds - ten times faster than most approved demand valves - and they react to pressure changes as low as 20 Pascal, depending on their adjustment and according to the service instructions provided to trained technicians.

Because performance is so advanced and work of breathing so remarkably low, compared to other demand valves; it is important that adjustment is made using dynamic performance testing, so that the full advantage of these designs are available to our discerning customers.

Thus this specially designed test kit affords proper ability to do this - and, indeed, with a suitable manifold adaptor, to test a range of other BVs, at ambient pressure. 

Apart from the special adaptors for the QS range of breathing valves, the specification is similar to that listed as 331 190 315, on an adjacent page.

Suitable training is available on enquiry.