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R1m valve 
training facility commissioned

6th November 2009

  

Font size: - +

Valves manufacturer Dynamic Fluid Control (DFC) has equipped and commissioned a training facility to support theory with a practical demonstration of valves operation and the valves’ effect on flow.

The R1-million facility will also be used to train customers in correct valves installation and maintenance techniques and make available to visitors and students the use of the facilities for training purposes.

At the heart of the facility lies a reticulate set of closed loops fitted with the full range of DFC valves. Flow and pressure throughout this network can be varied at will, and the loops are either isolated or interconnected to allow the demonstration of valve operation.

DFC marketing manager Charl Myburg says that customers are expected to find the demonstrations of air release and vacuum break valves, as well as control valves during in-line operation, particularly illuminating.

Visitors to the facility will also be shown a compari-
son between air valve accumu-lator and nonaccumulator performance, as well as demon-strations of the operation and setting of pressure-reducing valves, electronic control valves, pressure relief valves and level control valves.

“The ability to show non-return valve slam and the operation of typical isolating valves will also be useful,” Myburgh adds.

“We expect South Africa’s municipalities to find demonstrations of demand management especially instructive, because of the need to reduce water pressure during periods of low demand, and minimise water losses caused by leaking pipes.

“The facility allows simulation of three alternative methods of demand management using variants in the Cla-Val range of control valves: dual-stage pressure reducing, electronic full range pressure reducing or the flow-modulated fully hydraulically controlled pressure-reducing valve,” he explains.

Besides exhibiting the various valves in operation, DFC’s new facility is able to demonstrate hydraulic phenomena, such as cavitation and water hammer, which occur under controlled conditions within sections of transparent pipe, as well as how air enters the air valves.

“The digital flow indicators and pressure gauges in the loops create a feel for how hydraulic conditions change in pipelines according to varying demand – in other words, what happens to the pressure in a water network when the flow changes,” Myburgh explains.

“During a training session, we first cover the theoretical operation of the valves and then a live demonstration. In the case of demand manage-ment, we induce high flow and observe the pressure; then we reduce the flow to simulate the lower demand, which occurs at night, and allows students to see how the valve modulates, based on this lower flow to physically seal the loop, all while actually noting read-outs of flow and pressure.

“We can run a day’s cycle in five minutes and watch the valve change the flow according to the pressure within the loop,” he says.

Myburgh emphasises that expertise in valves’ operation and maintenance is as important as a knowledge of the products available for any particular application.

“Our new facility can be used for both. So, during the sales cycle, we demonstrate valve capability and effect. Then, after the sale, we bring in the operating personnel for training that includes fault diagnosis – the symptom, cause and cure – and valve maintenance.

“It is a comprehensive capability which we expect to use with increasing frequency,” he concludes.

 

Edited by Brindaveni Naidoo

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