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Irrigation Dictionary : Table of Contents (members login required)\t
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Term No.Term NameTerm Description
5624Volume change (of concrete)The expansion and contraction of hardened concrete resulting from wetting and drying or temperature variations. May produce various types of undesirab.....
4802Volumetric valveA valve that can deliver a predetermined volume of water, within a certain range of discharges and pressures.  Volumetric valves can function individu.....
9135Volumetric water rateThe charge levied according to the quantity of water actually delivered to the outlet or turnout......
423Volumic mass, Density, Mass densityimg:equations//422_426_e.jpg.....
4555Volute chamberThe space enclosed between the volute casing and the impellers, with a gradually increasing area towards the discharge nozzle, in which the major part.....
2799Volute primingThe priming effected by the action of volutes in a volute siphon by way of imparting spiral motion to the entering water......
4522Volute pumpA centrifugal pump having the case made in the form of a spiral or volute, as an aid to the partial conversion of the velocity energy of the water int.....
2796Volute siphonA 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.....
4557Volute, or Volute casingA spiral casing of a centrifugal pump, so shaped as to reduce gradually the speed of water or air leaving the impeller, transforming it into pressure .....
2797Volutes, Internal volutes, or External volutesCurved vanes or projections placed on (i) the inner sloping surface of the funnel of the siphon (internal volutes) or (ii) on the outside vertical pip.....
3500Vortex tube sand trapA type of sand trap in which a vortex tube is provided at an angle of 45o at the bed across the whole width of a canal. The vortex tube interrupts the.....
4121Vulnerability analysisA method for determining the degree to which land uses/activities are prone to flooding disruption......
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