key to the legendary performance of the Davey air compressor is the
Davey air-end with its patented
Perma-Vane design and its overall simplicity. The Perma-Vane air-end
surprisingly enough has only one continuously moving part. That means
fewer parts to fail and fewer parts to replace. They break down less
because there is less to breakdown.
Another ingenious idea incorporated into the Perma-Vane air-end is
that the rotor, blades and shaft are free floating, allowing the Perma-Vane
air-end to actually fine-tune itself as it operates, which
eliminates the risk of failure due to loss of end clearance. Most
compressor air-ends begin to wear out the day they are turned on.
But as the Perma-Vane air-end ages, its efficiency actually improves.
The more the air-end works, the better it gets.
simple and efficient compressor pump consists primarily of a rotor,
stator, and 8 blades.
The slotted rotor, the only continuously moving part, rotates within
an offset cylindrical housing. This arrangement within the stator
provides a crescent shaped swept area between the intake and exhaust
ports. As the rotor turns, the vanes are thrown outward (Centrifugal
Force) to form individual compression cells. During a single rotation,
the volume of each cell is progressively reduced thereby creating
compression. The rotor vanes slide in the rotor slots and ride on
a film of oil, which prevents any wear. The oil is injected into the
air intake and along the stator wall, sealing and lubricating as it
cools the air.
After the compression cycle, the oil/air mixture enters a multi-stage
separation system ensurimg that only clean air is delivered from the
rotary sliding Perma-Vane® air compressor has proven superior
in reliability and durability when compared to most piston models,
screw models, and other rotary vane compressors. Many of the benefits
are as follows: