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The MSA SAFETY 85078 is a low pressure warning device designed for use with portable air-supply systems. When cylinder pressure drops to a critical low level, the device activates an audible alarm to alert the wearer before air supply is exhausted. It features a lightweight mask-mounted regulator that provides high airflow and responds quickly to changing breathing demands. Licensed HVAC technicians, industrial safety professionals, and confined-space entry crews working with supplied-air respirator equipment rely on this device as a critical safety component during operations where air quality cannot be trusted.
The 85078 is suited for portable supplied-air respirator setups used in industrial, commercial, and hazardous-environment applications. Typical installation scenarios include self-contained breathing apparatus configurations and airline respirator systems where continuous monitoring of cylinder pressure is required. The mask-mounted design keeps the warning device integrated with the respirator assembly for immediate, direct feedback to the wearer during active use.
Designed as an OEM-style replacement or direct-fit component for portable air-supply and supplied-air respirator systems requiring a low pressure warning device.
Installation and service of supplied-air respirator components should be performed by qualified safety equipment technicians in accordance with applicable OSHA and NIOSH guidelines. Before servicing, depressurize the air supply system completely and confirm the cylinder valve is closed. Do not attempt to modify or disassemble the warning device housing. Always verify audible alarm function after installation before placing the unit back in service.
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