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E-mail jerry@freeflowinc.com Phone 800-813-7055 or 402-397-8910 Fax 402-397-8487

Free Flow H flume Approach Sections

H flume should be used with an approach section which collects the flow and provides a uniform approach to the flume. The length of the approach section can be varied, the recommended lengths are shown below.

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H	W	L
Inches	Inches	Inches
6	11-3/8	30
9	17-1/16	45
12	22-13/16	60
18	34-3/16	54
24	45-9/16	72
30	57	100
36	68-3/8	108
54	102-9/16	162

Free Flow H Flume End Connections

The inlet end of a H flume approach section can be open for use in a channel, or it can be supplied with pipe end connections as follows.

- Grouting or caulking collars which allow the pipe ends to be inserted in the collar              and grouted in place.
- Flat face fiberglass pipe flanges that match standard PVC and iron bolt circles &              patterns.
- Pipe stubs with flexible neoprene couplings which allow quick installation. Watertight              seal is made by using stainless steel band clamps furnished with the couplings.
- Internal expansion couplings that match the I.D. of the coupling.

Typical Inlet End Connections

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Caulking Collar Neoprene Couplings Flat Face Fiberglass Flanges

Downstream End Connections require the use of a downstream adapter and the downstream pipe connection is usually set much lower than the upstream pipe. Contact Free Flow for details.

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