Over the years we’ve converted most of our customers to low pressure foaming guns for Pre-soak, Tire, Bug, Desalt, etc.
Low pressure products, delivered thru a separate foam gun, has many benefits:
- Much quicker product delivery to the gun
- Much better show and coverage for the customer…you can’t get quality foam thru a high-pressure nozzle.
- NO CHECK VALVES required when properly installed.
Caveat…If you’re in a cold weather location you’ll need a freeze protection strategy.
Water weep doesn’t always work well on foam guns due to the large nozzles…in fact, it will likely reduce weep volume to the high pressure guns and then, you’ll regret the conversion.
Air-Blow-Out will work as long as there are no hose loops below the stored gun holders. Residual moisture will almost always collect and freeze in the loop.
Adding methanol to the blended product will work but your Fire Marshal won’t be happy with all that flammable material in the equipment room. Sadly, nobody seems to manufacture “winter formula” Pre-Soak or Tire Cleaner.
A PLC-based freeze protection control system is expensive to build and involves considerable wiring modifications.
Some basic bay parts from KR
Hose mount
Foam Gun
Foam gun nozzle
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