ISO 4359 Flume Inserts ISO 1438 Weirs (and ISO 4360 Weirs)
Our ISO hydrometric structures are designed for quick installation into existing channels of rectangular section.  FM design and manufacture Standard long throat flumes to ISO 4359.

Flumes and weirs are tailored to existing channel widths and flow requirements.
FM design and manufacture Standard thin plate weirs to ISO 1438.  Three forms are available: V-notch, rectangular notch and full width (with detachable weir crest for ease of maintenance and adjustable wall-mounting flanges to aid installation).  Standard ISO 4360 weirs are available with side walls.
FM Standard ISO Hydrometric structures are manufactured in durable stainless steel.
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ISO Flumes and Weirs

ISO Flumes and Weirs

ISO Flumes and Weirs

ISO Flumes and Weirs