For the candles Ell Ess Engineering uses RIPBACTM Screen in the Multi Candle Strainer/Filter where the flow is from out to in. The candle gives very efficient operation & reduces the maintenance as compared to Conventional Basket Strainer. The back washing is done in position without opening the filter unit within few seconds by air back wash and the slurry is flushed out of the unit. This reduces the downtime, spillage of products on the surrounding area which requires cleaning. The maintenance & man power requirement is greatly reduced. Due to rigid construction of the RIPBACTM Screen the life span of the candles are enhanced