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DuroVac inDepth - Selection CriteriaA wide choice of models ensure that the vacuum you buy will be just right for your application. |
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DuroVac inDepth - Selection CriteriaA wide choice of models ensure that the vacuum you buy will be just right for your application. |
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The DuroVac Series of industrial vacuums manufactured by Northwind Air Systems utilize three different types of vacuum producers: the Mid Size "DVP" Series and the Full Size "DV" Series feature "positive displacement" (P.D.) vacuums; the Compact "C" Series and the mid-size Mid Size "DVR" Series use regenerative vacuum producers; the central vacuum Platform "DVC" Series use centrifugal vacuum producers. There is a significant difference in the performance capability between the three types of machines; however, in general terms it can be said that for day-to-day cleaning with relatively short hoses, the regenerative and centrifugal machines are recommended. For heavy cleaning and spill cleanups, or for supporting long hoses and central piping systems, the PD powered machines are best. Please see the selection chart below for specific performance capabilities. Note: unlike some vendors, where the chart indicates that a machine will work with three x 25ft long hoses, performance under that criteria will be excellent, not just marginally possible!
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). See Buyer Tips to get a machine that handles super-fines. 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 regen powered Samson systems must be fitted with the optional US$125 relief valve when used with a central system. The PD powered machines (the "P" Series and the DuroVac) 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. Please see Vacuum Accessories 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. Please read DuroVac System Capability for an explanation of how the different types of vacuum producers compare to one another.
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Industrial Vacuums Home Page  DuroVac Industrial Vacuums 15 Iris Crescent, Brampton, ONTARIO L6Z 3H8 1- 888- 330- 3365 PHONE: 905-624-4003 FAX: 905-624-4641
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