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Products | Fluid Mechanics and Hydrology | Hydrology and Hydraulic Engineering | HM 161 | HM 161.36

HM 161.36

Siphon Spillway

Technical Description

The siphon weir is a type of solid overflow weir. The drain area of the weir is shaped like a closed canal. As soon as the water flows over the highest point, an
overhang permits the automatic start up of siphon action. In contrast to a nor-mal overflow weir, the flow takes place within a pipe rather than free flow. Utilising the intake effect makes it possible to have greater flow rates than with an overflow weir. A ventilation valve is used to regulated the flow rate. The Plexiglas arrangement is laid out on the bottom of the canal and attached with screws.

Learning Objectives / Experiments

The following examinations are possible in conjunction with HM 161 flow channel:
· Function of a siphon weir
· Flow rate and drain coefficients of a siphon weir
· Pipe flows
· Comparison of overflow and siphon weirs
· Cavitation process to overflow and siphon weirs

Features

Accessories for restriction of flow in open flumes

Specification

[1] Siphon weir for installation in flow channel HM 161
[2] Plexiglas weir,
lxwxh 1100x590x800mm, 40kg
[3] Drain ramp with overhang for self-ventilation
[4] Ventilation valve can also be used as a measuring connection and to regulate the flow rate

Technical Data

Material:
Plexiglas
Cross-section of flow of drain area
w x h: 560x100mm
suction head of siphon: 640mm

Dimensions and Weight

l x w x h: 1100 x 590 x 800 mm
Weight: approx. 40 kg

Scope of Delivery

1 weir, 1 set of accessories, 1 instruction manual

Order Details

070.16136 HM 161.36 Siphon Spillway