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The Scotty 4000F pump is a single action pump, with a foam educting attachment
and air aspirating nozzle. The
4000F-BP eliminates the need to batch mix when Class A foam is required. Each
time the pump is charged 1% of foam concentrate is educted into the water. The
air aspirating nozzle generates foam when the pump is discharged. The pump has a
brass pump chamber protected by an engineering grade polymer sleeve. No tools
are required to disassemble the unit, it can be completely disassembled by
"hand" for in the field maintenance. The Back Pack has a capacity of 5
US gallons (19 litres). Manufactured from a strong polyester based fabric,
protected by a thermoplastic polymer. It has a 4" filling port with a
removable debris screen, 2" wide shoulder straps and 3" wide shoulder
pads.
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