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Foam Cleaning, Part 2

May 27, 2021 | Professional Brewery

Foam Cleaning: The Hardware

                Welcome back!  In part 1 of this article, we discussed the chemical side of the foaming equation.  Now, we’ll move onto the equipment that’s available, the pros and cons of each, and how best to utilize each piece.  While proper chemicals are important, good equipment can be the difference between an effective foaming program and a dirty brewhouse. 

                Below, we’ll touch on several styles of equipment.  There are certainly more, but these represent most of the market.  We don’t endorse any particular brand, so we’ll keep it generic. 

Pump-up Tank Foamer

Benefits: Cheap, mobile

Drawbacks: Poorest performance, unreliable, low coverage rates, generates thin foam, dilution rates are usually locked

                Pump-up foamers are as entry level as it gets.  They can be attractive initially since they’re such a small investments and don’t require hoses or airlines.  They don’t produce a thick foam that clings very long, and are very prone to clogging if not cleaned out thoroughly and often.   Also, since you have to rinse these chemicals with clean water, you’re likely going to have to lug a hose around anyway.  Often times, people who have had a negative experience with foaming can blame it on the performance of a pump-up unit.  Frankly, we just don’t recommend them.  For any application.  Ever. 

Hose-end Foamer

Benefits: Affordable, easy to handle, decent foam generation, good coverage rates, dilution rate easily   changed

Drawbacks: Limited to hose length, tall equipment can be a challenge to foam, light duty construction

                Hose-end foamers are probably the best bang for your buck.  They’ll cost a little more than a pump-up foamer, but absolutely run circles around them as far as performance.  Managing a hose can be a bit of a hassle, and they usually don’t “throw” foam very high (maybe 20-25’ depending on water pressure), but these are the units they we recommend most often.  They’re somewhat light duty in construction, but the small price tag makes them easily replaced if needed.  Lastly, it’s nice to be able to quickly change your chemical dilution rate. 

Wall Mount Foamer

Benefits: Very thick foam, reaches higher than hose-end foamers, easy to use once installed

Drawbacks: Limited to hose length, expensive, usually not easy to change dilution

                Wall mount foamers are a great upgrade from hose end units, assuming you have plenty of hose and install in a central location.  This style mixes water, chemical and air at the unit, and sends the actual foam along your hose.  This means that you don’t have to carry a heavy chemical reservoir around with you like you would with the previous models.  They’ll generate a nice, thick foam that clings for a long time.  They’re also nice for reaching taller tanks.  The biggest drawback with them is the cost; you’re probably looking at $500 for entry models, which doesn’t include any potential plumbing costs to run a water line. 

Air Injected Wall Mount Foamer

                We’ll make this one easy: it’s a wall mount unit… on steroids.  It’s unmatched in performance, but it’s pretty pricey.  And you also have to run a compressed air line or air compressor to the unit, driving the cost up even more.   But my god, they work. 

Battery Powered Foamer

Benefits: Very mobile, thick foam, easy to use

Drawbacks: Very expensive, requires frequent refills, can’t switch to clean water rinse

              Battery foamers are very mobile and produce great foam, but in all honesty, they have most of the same drawbacks as a pump-up foamer, at a much higher price.  Since the reservoir has to contain pre-diluted chemicals, you’ll be refilling often.  You’ll need to rinse with clean water, so you’ll probably have to drag a hose around, thus negating the mobility.  Couple these drawbacks with the several thousand dollar pricetag, and you’ll understand why we don’t recommend them often. 

                A great foaming program can make your brewhouse sparkle, but you definitely get what you pay for.  Pairing proper chemicals (see the first article if you missed it) with quality equipment can make foaming an oddly pleasant task.  Contact us for consultation on your foaming program!  

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