Product Manual

Page 17
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NOTE 6—This most likely will require either a continuing addition of water from graduated
cylinders, or the use of the IN12-W Turf-Tec Mariotte Tubes. See figure # 2 and #2A to
see the relationship between the height of Mariotte tubes and the height of the constant
head of water inside the Turf-Tec Infiltration Rings. A rapid change in temperature may
eliminate use of the Mariotte tube.
8.6.10 To see the relationship of the vent tube and water level, follow the below
procedure.
8.6.11 First, fill the Mariotte tube completely and then close the top valve.
8.6.12 Next, insert a piece of clear tubing at the bottom valve and slowly open the
valve allowing the water to drop in the site glass about 2-3 of the line markings.
This will allow some pressure to build up in the unit and start the siphon. (You
will also hear bubbling sounds in the vent tube)
8.6.13 Next, close the bottom valve and raise the tube attached to the valve as shown
in the photo below.
8.6.14 Re-open the bottom valve and the water in the tube attached to it will maintain
a constant level equal to the bottom level of the vent tube.
**(“Bottom” in picture is misspelled)
8.6.15 You may want to mark the approximate level of water in the site glass directly
on the Mariotte Tubesince this is the bottom of the site glass and will aid in
setting up the actual test.
8.7 Measurements:
Figure 4
Relationship of vent tube and water level