Delta Engineering

Manual Backwashing Filter

OPERATION
The extreme design simplicity is a guarantee of perfect operation with low maintenance costs. The fluid flows through the filtering tube, from the inside towards the outside ; no solid particle bigger than the tube slot opening passes through, being collected inside the tube. The progressive clogging of the tube provides an increase in pressure drop. The only operation required is that of opening the back-washing valve (manual or automatic) : the particles stopped inside the tube are thus eliminated through the back-washing phase, the flow doesn’t stop, but simply decreases.
Once the back-washing cycle is complete, the valve is closed and the filter starts working again as normal until the next increase in pressure drop. Continuos, unnecessary and expensive plants stops are thus eliminated, with maintenance only needed at scheduled, controlled times.

 

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Features And Advantages:

Easy conception	Work like a Simplex filter. Lower Maintenance costs. Lower running costs. Flow rate isn't interrupted during back-washing cycle.
Tubular filter element	Lower pressure drop. Complete regeneration. High filtering area. High strength of filter elements. Fast, easy regeneration.
Wide rage of filtration rating	Filtering degree from 20 to 3000 micron.

USES
Filtration of liquids. They can be installed to steel works, chemical plants, petrochemical plants, pharmaceutical plants, food industry, water treatment, gas treatment, electric power station, nozzle protection.

 

DUTY MODE
The accumulation of impurities causes an increase in pressure drop. The back-washing cycle starts when the differential pressure reaches a fixed value.
The filtering element is cleaned by part of the filtered water, which flushes the impurities away.

Construction Options:

 

Material	Carbon and Stainless Steel (other on request)
Connections	UNI / ANSI / DIN Flanges - GAS / NPT Threadings
Design code	VSR - ASME - AD-MERKBLATTER - PED (others on request)
Certification & tests	ASME VIII Div. 1 - ISPESL - DIN 50049 3.1b - RINA - TÜV - CE MARKING
Filtering media	Slottubes 20-3000 micron
Fittings	Davit - Swings Bolts - Diff. Pressure Gauge - Valves etc.