| The QV line of portable vacuum systems feature vacuum pumps from
3 Hp to 15 Hp. The DV Series may be configured as a 15 Hp - 30 Hp machine.
All these systems make wonderful little central vacuums. Count 100 ft of piping as 25
ft of hose. For example, a pipe system with 300 feet to the farthest point and 25 ft
of 2" ID hose (equivalent to 100 ft hose) requires the QVP75 as a minimum choice.
Normally, for powders with a density of 35 - 55 pcf.,
the minimum choice is suitable. For heavier materials, a higher
horsepower choice is required.
For ultra-fine powders like carbon black,
talc, and the oxides, select an air to cloth ratio below 6.5:1.
(The systems NOT suitable for this service are marked red above).
All these systems make wonderful little
central vacuum systems. The "P" Series will support a pipe
networks up to 400 ft. long without modification.
The PD powered machines (the "P"
Series and the DV) are used for serious, heavy cleanup
jobs. The 7.5 Hp machine will pick up approximately 40 pounds of
material per minute based on a material density of 80
pcf. The 10 Hp machine will pick up approximately 60 pounds per minute
through a 2" hose 50 ft. long. Since the PD systems can move material
so quickly, the Large canister versions are usually recommended;
as well, various inexpensive options are available to provide external
storage up to 2 cubic yards.
The best measure of performance is pickup
power. The 10 Hp unit picks up 60 lbs./minute as mentioned. Main
competitive units pick up only 30% of this. This is
because many of these units use a centrifugal vacuum pumps.
|
