SCBA Cylinder Valve Assembly and Warning Device
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Questions and Answers

What activates the primary low pressure warning device during use?

  • 40 percent of the SCBA's rated service pressure
  • 50 percent of the SCBA's rated service pressure
  • 35 percent of the SCBA's rated service pressure (correct)
  • 30 percent of the SCBA's rated service pressure

    • What is a feature of the cylinder valve assembly's pressure gauge?

  • It is retro-reflective for visibility.
  • It includes a photoluminescent face. (correct)
  • It is connected to a wireless alarm.
  • It has a digital display.

    • What is the purpose of the pressure-relief device in the cylinder valve assembly?

  • To automatically refill the cylinder
  • To store additional air
  • To vent pressure safely if over-pressurized (correct)
  • To enhance cylinder installation

    • What feature is NOT provided by the shoulder pads in the G1 Carrier and Harness Assembly?

    <p>Adjustable length for different heights</p> Signup and view all the answers

    What is the drag rating of the hop handle on the ergonomic backplate?

    <p>1000 lbs</p> Signup and view all the answers

    What does the cylinder band do in the G1 Carrier and Harness Assembly?

    <p>Securely retains the cylinder</p> Signup and view all the answers

    What is the function of the adjustable pull straps in the harness assembly?

    <p>To provide a secure fit</p> Signup and view all the answers

    At what PSI does the bell alarm for low pressure actuate?

    <p>1575 PSI</p> Signup and view all the answers

    Study Notes

    Cylinder Valve Assembly

    • Features a large pressure gauge with photoluminescent face for visibility.
    • Non-locking handwheel for easy operation of the cylinder valve assembly.
    • Includes a pressure-relief device to safely vent over-pressurized cylinders.

    Primary Low Pressure Warning Device (Bell)

    • Engages automatically at 35% of SCBA's rated service pressure, approximately 1575 PSI.
    • Activates when there are about 16 minutes of service time remaining.

    G1 Carrier and Harness Assembly

    • Comprises various components designed for safety and comfort:
      • Backplate: Houses power module, battery module, and pressure reducer; includes large handles for handling and storage with drag ratings of 1000 lbs (hop handle) and 500 lbs (side handles).
      • Cylinder Band: Metal construction with a latch, ensuring secure retention and facilitating cylinder installation/removal.
      • Shoulder Pads: Designed for weight distribution, featuring a friction pad to minimize strap slippage, retroreflective materials for visibility, and steel buckles for security. Snap buttons allow easy replacement or repair of components.
      • Lumbar Pad: Provides additional support and comfort to the lower back during use.
      • Adjustable Pull Straps: Facilitate customization of fit for different users.
      • Waist Belt: Enhances stability and comfort.
      • Regulator Keeper: Secures the regulator in place for easy access and use.

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    Description

    This quiz covers the components and features of SCBA cylinder valve assembly and primary low pressure warning device, including pressure gauges and handwheels.

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