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UNDERWATER TOOLS DEPTH GUIDELINE
UNDERWATER MODELS
ONLY BR45350
DO NOT USE HYDRAULIC TOOLS
THAT ARE NOT DESIGNATED AS AN
"UNDERWATER" MODEL, OR THIS WILL
RESULT IN DAMAGE TO THE TOOL.
For underwater hydraulic tools the applications are
broken down into four quadrants depending on
type of tool and method of operation.
The types of tools are percussive and rotational,
each with different characteristics allowing for
different depth operation. With percussive tools,
the nitrogen accumulator PSI must counter the
increase in ambient pressure found at lower
depths. Since there is a maximum PSI for
percussive tools they are limited to certain depths.
Rotational tools do not have accumulators and
thus capable of deeper depths.
The methods are broken into diver operated or
remote operated vehicle (ROV). ROV's can reach
lower depths and with an on-board hydraulic
power source that is depth compensated, can
operate hydraulic tools at depths of thousands of
feet. ROV operation is still limited to the tool, for
example a percussive tool has the same depth
limitation whether ROV or diver operated.
Operation Overview
Percussive
Tools: Breakers,
Hammer Drills and
Chipping Hammers
Max Depth: 500' -
limitations due to
accumulator PSI
max (increase 40
PSI for every 100')
Tools: Breakers,
Hammer Drills and
Chipping Hammers
Max Depth: 500' -
limitations due to
accumulator PSI
max (increase 40
PSI for every 100')
Recommended Hose Diameters
Depth (ft)
8 GPM
100
300
600
1000
Rotational
Tools: Grinders,
Saws, Chain Saws
Max Depth: 1000' -
Reference hose
sizing guide below
Tools: Grinders,
Saws, Chain Saws
Max Depth: 1000' -
Reference hose
sizing guide below
12 GPM
5/8"
5/8"
3/4"
1"
1"
1"
1"
1-1/4"
BR45 User Manual ◄ 31
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