Radial Gate
Product Code : EL-EFFCA-11063
Quick answer: The radial gate is a curved, circular-segment gate that fits the Lab Exports experimental flume. It is used to study discharge under a radial (Tainter) gate in free and submerged flow, the contracted jet and the hydraulic jump downstream. Height is set with a lever and the unit weighs about 3 kg. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Feature | Detail |
|---|---|
| Use | Radial gate model for the experimental flume |
| Gate wall | Segment of a circle |
| Height adjustment | Lever operated |
| Sealing | Lateral sealing lips |
| Dimensions (L x W x H) | 310 x 160 x 460 mm |
| Weight | Approx. 3 kg |
How the radial gate is used
A radial gate turns about a horizontal pivot, and because its face is curved the water pressure acts through that pivot, so the gate can be raised with little effort. This is why radial gates are common on barrages and spillway crests. The flume model reproduces the layout at a scale where students can watch the flow under the lip and measure it.
Discharge under the gate takes the same form as for a vertical gate, q = Cd * a * sqrt(2 g y1), but the jet contraction changes with the angle of the gate lip, so Cd varies with the setting. Students record upstream depth, opening and flow rate at several lever positions and compare their Cd values with those from a flat sluice gate.
- Place the radial gate in the flume test section with the sealing lips against the side walls.
- Set the lever to the first gate position and start the flow.
- Read the discharge, the upstream depth and the depth of the contracted jet.
- Drown the outlet to compare submerged with free discharge.
- Optionally add a broad-crested weir upstream of the gate to model a barrage.
Key features
- Curved gate wall shaped as a segment of a circle, as on full-size radial gates
- Lever mechanism for fine height positioning
- Lateral sealing lips to stop leakage past the gate edges
- Demonstrates free and submerged outflow, jet contraction and the downstream hydraulic jump
- Can be combined with the broad-crested weir to simulate a barrage
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the radial gate at its works in Laxmi Nagar, Delhi, and supplies it to engineering colleges, polytechnics and TVET institutes in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Experimental Flume Flow Channel Apparatus products
- Sluice Gate (EL-EFFCA-11062)
- Experimental Flume Flow Channel Apparatus (EL-EFFCA-11061)
- Ogee-Crested Weir with Pressure Measurement (EL-EFFCA-11065)
- Venturi Flume (EL-EFFCA-11066)
- Set of Plate Weirs, Four Types (EL-EFFCA-11068)
- Extension Element of the Experimental Flume (EL-EFFCA-11069)
The full range is in the Experimental Flume Flow Channel Apparatus section of the Engineering Lab range.
Frequently asked questions
What is the difference between a radial gate and a sluice gate?
A sluice gate is a flat vertical plate, while a radial gate has a curved face that rotates about a pivot. The curve changes the jet contraction, so the two gates give different discharge coefficients for the same opening.
Can the radial gate be combined with other flume models?
Yes. It can be used with a fixed structure such as the broad-crested weir to model a barrage, where the gate regulates the flow over the crest.
What is the price of the radial gate?
Prices are not published on the website. Add the radial gate to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-EFFCA-11063 and the quantity, to receive a quotation.
Does Lab Exports manufacture the radial gate?
Yes. Lab Exports manufactures the radial gate at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-EFFCA-11063.
Request a quote
Email [email protected] with the house code EL-EFFCA-11063 and the quantity, or add the radial gate to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
