The high pressure hose supplies air directly to the tank. Scbas have 2 air regulators. The first one is on the side of the pack and reduces the air to only a couple hundred psi, this air feeds the regulator that attaches to the face piece. The pressure from the high pressure hose on this ric pack would be too much for the face piece regulator, which is why you would use the low pressure hose.
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Using the rit in the close enclosed SCBA maze is rough
Bout to head in and do it this morning.
Great information
Very helpful, thanks
when would you use the high pressure hose vs the low pressure hose?
The high pressure hose supplies air directly to the tank. Scbas have 2 air regulators. The first one is on the side of the pack and reduces the air to only a couple hundred psi, this air feeds the regulator that attaches to the face piece. The pressure from the high pressure hose on this ric pack would be too much for the face piece regulator, which is why you would use the low pressure hose.