International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)
<<    Browsing page 1 of 2    >>
Term No.Term Name/Term DescriptionAction
2253
Siphon weir
A weir operating on the siphon principle. The siphonic arrangement is usually fitted in gravity weirs.
Similar Terms
2487
Tubes à Manchettes grouting
It is a process of grouting through a tube with a smooth interior that has perforations at an interval of 30-40 cm covered by rubber sleeves. The tube is sealed into the ground by plastic grout sheath. The rubber membrane acts as a one-way wall allowing the grout under pressure to escape into the ground hole. When grouting is stopped the rubber mem.....
Similar Terms
2706
Siphon-pit setting
A type of turbine setting used when the head is insufficient to provide a permanent water seal to the turbine. The water passes through the turbine under siphonic action (illustrated)......
Similar Terms
2769
Siphon spillway
A spillway operating on the siphon principle.
Similar Terms
2770
Siphon, or Syphon
1 - A tube, pipe or a hose through which liquid can be moved from a higher to a lower level over an intervening (higher) barrier.  The movement is caused by atmospheric pressure forcing the liquid through the upstream portion of the siphon while the weight of the liquid in the downstream leg causes continuous downward flow. Because the upper part r.....
Similar Terms
2771
High head siphon
A siphon acting under a difference in water level of more than the barometric height of the water column, i.e. 10.33 metres......
Similar Terms
2772
Low head siphon
A siphon acting under a difference in water level of less than the barometric height of the water column, i.e. less than 10.33 metres......
Similar Terms
2773
Saddle siphon, or Hood siphon
A siphon having its duct formed of a U-shaped hood. The inlet lip of the hood is submerged below the full reservoir level and that of the outlet lip terminates in a water seal formed by various devices. The siphons are sometimes named according to the water seal provided (illustrated)......
Similar Terms
2774
Siphon duct, or Siphon barrel
The annular space between the dam (body wall) and the hood (illustrated).
Similar Terms
2787
Baby siphon type water seal, or Maramsilli baby siphon type water seal
A water seal provided by a baby siphon which by virtue of being at a lower level gets primed earlier and its issuing jet itself seals the downstream end of the siphon duct. A siphon employing this device is also called a `Maramsilli baby siphon` (illustrated)......
Similar Terms
2788
Baby siphon, or Maramsilli baby siphon
A smaller siphon operating at a lower level than the main siphon in the Maramsilli baby siphon. Sometimes, the baby siphon is also referred to as `Maramsilli baby siphon` (illustrated)......
Similar Terms
2789
Auxiliary siphon type water seal
A water seal created by providing a baby siphon placed either in front or by the side of the main siphon. The two siphons are connected through a pipe conduit......
Similar Terms
2795
Battery of siphons
A number of siphons installed close to each other.
Similar Terms
2796
Volute siphon
A siphon consisting of a bent pipe (barrel), the vertical portion is usually funnel-shaped at the top. Volutes are placed on the funnel or outside the vertical pipe near its top and due it is to this that it owes its name. The funnel is covered by a dome placed at some distance. The dome is supported by a cylindrical drum resting on pillars leaving.....
Similar Terms
2802
Priming siphon
A siphon device usually of smaller capacity installed with a main siphon or battery of siphons to reduce priming depth in the latter......
Similar Terms
3155
Well siphon
A siphon in which wells are provided at each end of the siphon.
Similar Terms
3582
Siphon spillway (canal)
A spillway operating on siphonic principle placed in the bank normal to the flow of the canal or in the canal downstream of the head race channel of a hydro-electric plant......
Similar Terms
3712
Double orifice module outlet, or Siphon module outlet
A Neyrpic module provided with two metallic covers forming a syphon. This outlet works as a semi-module as long as upstream water level does not touch the bottom edges of the two metallic covers. Then, with further rise in upstream water level it works as a semi-module orifice till the siphon primes and flow through which impinges on the jet. This .....
Similar Terms
3756
Syphon, Inverted siphon, Irrigation syphon, Canal syphon, Syphon superpassage
1 - A structure with a closed conduit, designed to run full and usually under pressure, to transport (i) canal water under railroads, roads, various types of drainage channels and depressions, or (ii) drainage water under railroads, roads, etc. In reference to cross-drainage works on canals, this term pinpoints to the condition that the canal passe.....
Similar Terms
4071
Spiles, or Furrow tubes
Small tubes inserted through the banks of field irrigation ditches to supply furrows or corrugations.
Similar Terms
4072
Siphon tubes
Small diameter, curved tubes that convey water from field irrigation ditches to individual furrows or corrugations by siphonic action......
Similar Terms
4832
Microtubes
Polyethylene tubes, one end of which is inserted in the nozzle-line, whose small diameters dissipate energy and restrict discharge from the open end.  Microtubes have inner diameters from 0.6 and 1 mm and are typically several cm long......
Similar Terms
4834
Perforated tubes
Drip irrigation nozzle-lines of polyethylene or similar plastic, having small, regularly spaced perforations to emit water, and used for a single season or crop......
Similar Terms
5362
Siphon breaker
Device to admit air at high point in discharge pipe for stopping siphon operation.
Similar Terms
5413
Discharge siphon
Section of a discharge pipe that may operate as a siphon.
Similar Terms
<<    Browsing page 1 of 2    >>