Avon – Avon ST53 SCBA & STPAPR

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The ST53 combines Avon Protection Systems’ FM53 mask with innovative modular breathing apparatus technology to provide positive pressure SCBA or PAPR and APR capability for specialist applications. The ST53 system provides the operator with total flexibility to select the necessary level of protection quickly while continuing to operate effectively. The ST53 backframe includes a remotely accessible, chest mounted pressure gauge for monitoring of pressure and a whistle for end of service alarm (which has the option to be disabled if required). The compact chemically hardened demand valve provides constant positive pressure. The Compact Demand Valve (CDV) is attached to the FM53 mask via the standard 40mm STANAG filter thread.

When used with the ST-PAPR the unit, the ST53 system enables the user to switch instantly from powered air to positive pressure SCBA mode as required without loss of protection.