Foregger 705® malfunction resulting in loss of gas flow
The Foregger 705® has an indexing key pin-plunger that is subject to damage by regular use, possibly because it is brazed rather than welded. In our situation, as this pin developed a greater 'wobble', it allowed damage of a common outlet poppet valve, damaging that valve in such a way that no flow could pass through either DRV. Diluent gas will flow via an alternate route when the Copper Kettle ® is used. The abrupt cutoff of all gas flow has obvious potential hazard and should be brought to the attention of anesthesia personnel using this machine.