Guidelines & FAQ
The MAD DOG multiple expansion foam nozzle offers a rugged versatility and performance not found in any other nozzle. With a twist of the wrist the MAD DOG produces low expansion foam (ratio approx. 12:1) with excellent stream projection or medium expansion foam (ratio approx. 30:1) with incredible production. Quality of water and foam concentrate greatly affect expansion rates. After thousands of tests, demos, and field use the Mad Dog usually produces the best quality foam with Phos-Chek WD881 concentrate.
MAD DOG’s patented 3D Multidimensional Variable Orifice Screen System is at the heart of the incredible performance. The body is constructed of pressure injected polymer resins which make it economical, lightweight, and incredibly rugged. We routinely see nozzles in the field that are over a decade old. Even with a nozzle attached, the MAD DOG is still less than 8 inches long making it easier to store and use than any of its competitors. The MAD DOG can be used with a variety of nozzles.
|What Nozzle(s) fit the MAD DOG?
This list is a work in progress. Many more nozzles fit the MAD DOG. Please email us with any questions!
Nozzles with a smooth non-rigid face produce better foam expansion with the Mad Dog.
|What is the gpm (gallons per minute) of the nozzle?*
With the nozzle at 100 PSI nozzle pressure the flow rate is approximately 70 gpm. If a lower flow is needed use a 1″ hose with an increaser to the 1 1/2″ nozzle and the flow will be approximately 30 gpm at 100 PSI nozzle pressure. The Mad Dog attachment will fit various nozzles but flow rates and expansion rates may vary.
What expansion rates and discharge distances are produced?*
Will the nozzle work with class B foam?
What concentrate percentage do you recommend using?
I purchased a Mad Dog and it doesn’t work.
What type of proportioning system is being used, an automatic or a manual proportioner (eductor)? If using an automatic make sure there is concentrate in the system.
What type concentrate is being used? If using an automatic proportioner and a quality concentrate, then the only other possibility is the plumbing or the filter on the proportioner may be clogged.
If using an eductor the nozzle and the eductor gpm must be matched. The eductor usually will have its gpm rating stamped into it somewhere. The Mad Dog will only work with an eductor that is rated for 70 gpm or less. Eductors are very sensitive to length of hose, pressure, and elevation gain. With 5 pounds of backpressure the eductor will stop working.
What type of fires can the Mad Dog be used on?
*Gallons per minute, expansion rates and discharge distances are based on using a 1 1/2″ lexan nozzle with a concentrate percentage of 0.5%.