Hazard report. Defective oxygen supply tubing may delay use of some Allied EPV100 emergency portable ventilators
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Updated: Jun 5, 2026

A Novel Inhalation Mask System to Deliver High Concentrations of Nitric Oxide Gas in Spontaneously Breathing Subjects
Published on: May 4, 2021
Abstract:
Some of the diameter index safety system (DISS) connectors on the disposable oxygen (O2) supply tubing provided with Allied Healthcare Products EPV100 emergency portable ventilators were installed backwards during manufacturing. This problem may temporarily prevent connection of the ventilator to an O2 supply source. Facilities should inspect the tubing supplied with the EPV100 for reversed connectors and, if necessary, contact Allied Healthcare Products for replacement tubing.
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