With Tecnoma, let's work together for a better environment
With Tecnoma, let's work together for a better environment
With Tecnoma, let's work together for a better environment
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Making the correct choiceOF SURFACE PUMPCalculating the rate of flow and PRESSURE REQUIRED IS DONE AS FOLLOWSAs soon as the rate of flow and pressure has been established, all you have todo is take into account the curvature of each TECNOMA pump and identify thecurvature at the point of intersection specified by your two values:5038 m4034Hm3020121001 2 3 4 52 m 3 /hm 3 /hPulsar 1300 T 8001. What is the depth of suction? [<strong>for</strong> example 4 meters] 42. What is the length of the sprinkler pipe?[<strong>for</strong> example 60 meters or 60 x 10%*] 63. What is the difference in height between the pumpand the water supply point use? [For example 8 meters] 8[Useful pressure 2 bar or 20 meters**] 20___________________YOUR PRESSURE REQUIREMENT ARE :38 m (or 3,8 bar)4. . How many water supply points are used ?[if you use two water supply points] 2YOUR RATE OF FLOW REQUIREMENT ARE (2 x 1m 3 /h)2m 3 /h or 2000 l/h*The flow of water in a pipe causes losses in charge (friction) which lead to a loss in pressure;this is estimated to be 10% <strong>for</strong> a pipe of 19mm (3/4’’)** A water supply point is said to need 2 bar (20m) in order to operate.Whatever the numberof water supply points, the pressure required will always be 2 bar, because the pressures arenot added to each other.31catalogue VRAI - anglais.indd 32 5/09/07 16:05:49
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