700-Bubbler-Man Rev 12 13 Feb 2020
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DO:
• Use only USGS approved line
• Encase the orifice line in a conduit
• Ensure the line’s run is continuously downward with no dips or swells and no part of the
line’s run is lower than the line outlet
• Place the line outlet in calm water (when possible)
• Ensure the line outlet is secured in place and has a slight downwards tilt
• Install the line outlet perpendicular to the flow in flowing water
• Use a muffler if water is turbulent
DO NOT:
• Splice the orifice line
• Face the stream ward end of the orifice line facing upstream, downstream or upwards in
flowing water
• Mount the line outlet in the wake of an obstruction (boulder, bridge footing etc.)
2.6.1 USING THE SWAGELOK® FITTING
4
NOTE: To maintain a tight seal, use the provided Swagelok fitting with a brass ferrule.
ASSEMBLY:
1) Place the nut and ferrules on the line as shown in Figure 2-5 and fully insert the line into the
Bubbler outlet.
IMPORTANT! Ensure the
Swagelok fitting ferrules
are oriented as shown
Figure 2-5: Swagelok fitting orientation
4
For a detailed explanation of installing Swagelok fittings refer to “An Installer’s Pocket Guide for Swagelok Tube
Fittings” on the Swagelok website. https://www.swagelok.com/downloads/webcatalogs/en/ms-13-151.pdf
Tapered
section of
front ferrule
portion of
back ferrule
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