The air operated pump has two main parts. One double acting air
motor driving and a single acting high pressure pump mechanism. The
grease is fed into the pump tube by the piston on the upward stroke
and is pushed out through the check valve on the down stroke.
The relationship between the areas of the air piston and the pump
piston decides the pressure ratio. The pressure ratio is 60:1 and the
theoretical static pressure when the pump has stopped is 60 times
higher than the air pressure.
The pump package includes a 2" bunge adapter for mounting the pump on top of the drum cover as well as a hose and applicator gun. The 50 kg unit is, in addition, supplied with a trolley for easy transport of the heavy grease drums.
The 4 meter 3/8" hose has a inner tube of synthetic oil resistant layer. Outer layer is made of durable weather and oil resistand rubber. Reinforced by two braids of compact steel wire.