typical specifications nested parshall flumes - Plasti-Fab, Inc.

5. An integral molded track and a stainless steel ground plate for characterized capacitance
probe. ** (required for both flumes)
6. Inlet and/or outlet adapter to provide transition between a pipe and the larger flume.
7. Inlet and/or outlet bulkheads or wingwalls to transition flow between the flume and channel.
8. Recessed cavity for pressure probe with clips for holding probe and cable. Liftout
bracket for pressure probe (used on larger flumes). (required for both flumes)
The Parshall flume shall be equipped with a molded in head gage graduated in 100ths of a foot and
centimeters.
Typical physical properties shall be:
Tensile strength
14,000 psi
Percent elongation l.65%
Flexural strength
25,000 psi
Flexural modulus
0.90 x 10 6 psi
Barcol hardness 30
Flume dimensions shall be within plus or minus l/16th inch for flumes 12" and smaller. For 18" to 24"
flumes the tolerance shall be plus or minus 3/32nd inch in the throat and plus or minus 1/8 inch
elsewhere. Flumes 30" through 48" shall be plus or minus 1/8" in the throat and plus or minus 1/4"
elsewhere.
INSTALLATION SUGGESTIONS FOR NESTED FLUMES
1) The flume(s) should be installed level end-to-end and side-to-side.
2) Place the flume to be nested so that flat section of throat rests on throat of larger unit.
3) The leading edge of the throat section on both flumes should be aligned. (See print).
4) At the factory, a bead of silicon sealant has been placed between the flanges, bulkhead and
other contacting surfaces of the insert flume to provide a water tight seal.
5) If desired, the space between the side walls of the two flumes may be filled with sand and
covered with a layer of breakable grout to help prevent water collecting between flumes.
6) Please note that these flumes are designed to be freestanding, and require no additional external
support in order to maintain their dimensional integrity during operation.
The flume shall be as manufactured by Plasti-Fab, Inc. of Tualatin, Oregon.
Please consult your local representative or contact Plasti-Fab, Inc., PO Box 100, Tualatin, Oregon, 97062.
Ph: 503-692-5460 Fax: 503-692-1145 e-mail: sales@plasti-fab.com web: www.plasti-fab.com
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