Dye Penetrant Inspection (DPI) Equipment


Water Filtration Unit

Dye Penetrant Waste Treatment

JAFIL is a complete filtration system designed to process water containing Hydrocarbon contaminates. Hydrocarbon contaminates are a byproduct of using liquid dye penetrants and are typically environmentally hazardous which can make it difficult to dispose of them. JAFIL uses Activated Carbon Filter Bags which are easily replicable bags filled with small active Carbon granules to filter these chemicals and allows the processed water which is then environmentally safe to be disposed via a foul drain.

JAFIL is a simple yet effective design requiring only occasional filter bag changes with no pre-treatment fluids or specialised cleaning regimes necessary. This makes JAFIL comparatively cheaper than ultra-filtration units while achieving similar results. Ideal for any industrial application where dye penetrants are being used regularly.

Removes 98% of Contaminants

JAFIL will remove more than 98% of contaminants in a single treatment cycle. The JAFIL system is fully automated when connected to a wash/drain station and is a pumped system to maximise processing volume.

Safeguard float switches mounted on the receiver and header tanks to prevent overflowing with audible alarm and warning lights to notify operators when system is at maximum capacity.

Activated Carbon Filter System

JAFIL uses a twin filter design with a primary and secondary tower system. Activated Carbon Filter Bags are inserted into the towers (3 per tower) and will typically last up to 270 processing hours before the JAFIL requires operator input.

After 270 hours the towers are normally ‘switched’ with the aid of taps on the front of the unit by the operator - With the original primary tower becoming the new secondary, and the original secondary becoming the new primary.

The filters in new secondary would then be replaced and for most applications this mean that only half the filters need replacing at any service. This prolongs the filter life and means on average a filter will have a useful life of 540 processing hours before needing to be disposed of.

JAFIL is also fitted with a countdown timer to notify operators when saturation levels should be checked which can be adjusted to suit waste concentration. JAFIL includes a sight glass too with built-in UV light so saturation levels can be checked visually, whereby treated waste will begin to fluoresce as the filters become saturated.

Versions Available

JAFIL45 Processes 45 Litres / Hr

2 x Towers
(6 Filter Bags)

1 tower acts as primary,
1 tower acts as secondary
JAFIL90 Processes 90 Litres / Hr 4 x Towers
​(12 Filter Bags)
2 towers acts as primary,
2 towers acts as secondary


Oil Skimmer

Johnson & Allen manufacture and highly recommend an Oil Skimmer for customers using post-emulsified penetrants in their FDPI processes.

The Oil Skimmer consists of a series of filters with drainage taps which remove any penetrant floating on the surface of waste washing before the rest liquid is treated by the activated Carbon. Failure to remove this film can greatly reduce the life span of the Activated Carbon Bags by contaminating them and cogging them up.

This unit is not required for water washable penetrants because they are already emulsified.

Typically the Oil Skimmer should be drained once a week but this will depend on usage.

Why use a JAFIL45 or JAFIL90?

The simple answer…
The simple answer is that treating waste in-house will work out significantly cheaper for most organisations than having a third party waste treatment company take untreated waste away.

Consider the following… 
Activated Carbon Filter Bags have a total useful life of 540 hours - 270 hours as a primary filter and 270 hours as a secondary filter. The JAFIL45 can treat 45 Litres of waste washings an hour and the JAFIL90 can treat 90 Litres of waste washings an hour. This is 24,300 Litres and 48,600 Litres of waste respectively - The equivalent to 24 and 48 large 1000 Litre IBC’s!

That sounds like a lot of waste – But is it?
Now consider that an average wash-off gun will produce between 2.5 and 5 Litres of waste washings per minute. Taking the lower figure, this means an operator will fill one IBC every 6.67 hours of washing. An organisation undertaking NDT daily would very likely exceed 20 minutes a day washing, and with 20 working days in a month this is 6.67 hours – i.e. One IBC a month!

How much can I save?
Now, we don’t know what it costs your organization to have waste taken away, but from our experience several IBC’s are significantly more expensive than a set of replacement JAFIL filters. In fact even after factoring in the initial expenditure to purchase a JAFIL unit, Johnson & Allen have saved other customers thousands in their first year alone with a JAFIL system.

This is intended as a ‘food for thought’ to showcase the potential benefits of purchasing a JAFIL45 or JAFIL90 unit. If you want to know how much your organisation can save contact our technical sales team today.

Product Data

  • Input 230/400VAC @ 50Hz
  • Fully automated pumped system to maximise processing volume
  • Safeguard float switches mounted in the receiver and header tanks to prevent overflowing
  • Stainless steel construction
  • Sight glass to indicate when filters need replacing
  • Low operating costs with custom long lasting active Carbon filter bags
  • Durable Polypropylene filtration towers
  • Mounted on casters for easy re-siting

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