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 | |  | | | AVQ Water Solutions Ltd.plastic fabrications sheffield flume specialists sheffield weir tanks sheffield trapezoidal flumes sheffield flat v notch weir h s flume ultra-sonic level mcerts compliance trade effluent monitoring rectangular flume Parshall flume GRP/PVC flumes and weirs Flow surveys watercourse maintenance | | | Company | AVQ Water Solutions Ltd. | | | Contact | Denham Jobling | | Address | Unit 5C
Redbrook Business Park
Barnsley
South Yorkshire
England
S75 1JN (MAP)
| | Telephone | 01226 730207 | | Mobile | 07894 153672 | | | Email | | | Website | www.avqwater.com | | | AVQ Water manufacture rectangular flumes to meet the requirements of each installation.
We do offer a range of standard sized flumes but a large portion of our manufacture is custom designed and built.
Our flumes are constructed rigidly to eliminate distortion during installation. Materials include reinforced PVC, 316 Stainless Steel and Polypropylene. Accurate flows are more easily achieved by having a smooth transition between the approach channel and the inlet of the flume. For this reason, we recommend a section of approach channel, this can be supplied already attached to the flume, or for longer channels, supplied in sections with gaskets and simply bolted together on site.
Please note: To comply with British Standard BS3680, the length of the approach channel to a rectangular or U-shaped flume must be at least TEN times the width of the channel at maximum flow from point of measurement (3-4 x h max). However, if the effluent is approaching from a steep gradient, or other conditions result in hydraulic jump, then the approach channel should not be less than thirty times the maximum head (see BS3680 Part 4C,6.2.2.2 and 6.2.2.6)
| Designed originally to conduct surveys. These flumes are manufactured to be temporarily installed in manholes and provide a known head/discharge relationship. The flumes provide a simple method of assessing trade effluent discharges or can be installed as a permanent fixture for a fraction of the cost of an equivalent standing wave flume. |  |
TRAPEZOIDAL FLUMES
Trapezoidal flumes, originally developed to measure flows in irrigation channels, are well suited for low flow applications in conduits and manholes.
For storm water or agricultural applications, the Trapezoidal flume is superior to the Parshall flume for several reasons. The shape of the trapezoidal flume conforms to the normal shape of culverts and ditches reducing installation costs.
Also, the straight through design allows for the passage of large amounts of trash and reduces the problem of silting. |  |
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