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MSA Automatic Switch Valve (ASV)
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MSA Automatic Switch Valve (ASV)

The Automatic Switch Valve on the waist belt, to connect a compressed air breathing apparatus like the BD 96 Mini to a factory airline system or cascade air cylinders. Provides air supply if the airline is disconnected or if the external air source fails.

  • Fully automatic change-over valve
  • Automatic switching from external air source to BA and back again
  • Distinct warning signal when air-supplied by BA
  • Warning if BA cylinder is closed
  • Application as emergency air supply

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Founded in 1994, Accurate Instruments (NZ) Ltd with its HSE Safety division is one of the few 100% New Zealand owned and operated safety companies in New Zealand today. This is in a market dominated by larger foreign owned companies, yet we continue to operate as a strong independent supplier to the New Zealand market.

We specialize in the supply of safety equipment and safety systems to protect workers and their workplaces.



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192 Marua Road