This photo shows various sizes of Vanton
PVC tank/pump systems used to safely
handle plating, chemical cleaning and
other corrosive plant wastes. All units
are skid mounted, with pumps, valves,
controls and piping installed so that
the systems can be put into operation as
soon as external electrical connections
and piping hook-ups are made. All pumps
feature a cantilevered shaft design,
which eliminates the need for shaft
sleeve bearings in solution. The
integral pump/motor shafts are supported
by large diameter, oversized bearings in
hollow shaft motors.
These Vanton PVC tank/pump systems stand
66" high, 78" long and 26" wide. The
48" cantilevered shafts of the two
Vanton SGH sump pumps are housed in
heavily ribbed PVC columns to provide
the extra rigidity required. The pumps
are driven by 5 HP, 1750 RPM hollow
shaft motors and deliver 120 PGM at 40'
PVC Tank/Pump Systems
Handle Corrosive Waste
Chromic acid, Hydrochloric acid, Hydrofluoric acid, Nitric
Non-metallic Tank Pump Systems
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Reprinted from POLLUTION ENGINEERING INTERNATIONAL
A manufacturer of military equipment faced a difficult waste-handling
problem because of the many corrosive electroplating and metal
finishing solutions held in the processing areas.
Extreme temperature variations and environmental elements also were
of concern. Site temperatures ranged from slightly below freezing to
44°C. Some of the waste collection sumps were kept outdoors, where
they were exposed to direct sunlight. In addition, humidity readings as
low as 9 percent were common.
The metal finishing rinse waters collected in the sumps ranged in pH
from two to seven. They included varying percentages of chromic acid
sodium dichromate, nitric acid, hydrochloric acid, sulfuric acid,
hydrofluoric acid and phosphoric acid.
To handle the waste, the manufacturer needed a tank/pump system that
would withstand corrosion and exposure to the elements.
The design-engineering firm for the project recommended that all
fluid-contacting components, including tanks, pumps, valves, pipes and
fittings, be constructed of solid, homogeneous thermoplastic. Metallic
construction (stainless steel) was ruled out almost immediately because
of anticipated problems with corrosion, maintenance, galling or seizing
of threaded connections, and high initial cost.
Although polypropylene pumps and valves tend to be slightly less
expensive than polyvinylchloride (PVC), the latter is more suitable for
handling oxidizing acids such as chromic and nitric acids. Tensile and
compression strength also are high, providing the rigidity needed for
the tanks. Outdoor units were painted with an ultraviolet-inhibiting
The system consisted of 11 PVC tanks, each fitted with two heavy-duty
sump pumps from Vanton Pump and Equipment Corp., Hillside, N.J.
The pumps were driven by hollow-shaft motors, which were protected
from corrosive fumes by vapor seals. The stainless steel shaft was
completely isolated from fluids by a thick-sectioned PVC sleeve, and
exposed motors and motor brackets were coated in epoxy.
Tanks were constructed of solid ½-inch-thick PVC sheets, and a 1
¼-inch-thick bolted PVC cover supported the two sump pumps and
float controls. Stainless steel lifting lugs at the four corners facilitated
Each skid-mounted tank/pump unit contained pumps, a motor, valves,
level controls and piping. Only external connections and wiring needed
to be added to make the units operable. A duplex pump control panel
housed the fuse disconnect switch, magnetic motor starters, on/off
indicating lights, transformer and relays.
The units handle a broad range of materials and pH levels, and resist
corrosion. Other features of the system included automated operation
and easy maintenance.
In the 1950, Vanton developed a revolutionary all-plastic pump for use in conjunction with the first heart-lung device. The design limited fluid contact to only two non-metallic parts: a plastic body block and a flexible liner. This was the birth of our Flex-I-Liner rotary pump. Its self-priming sealless design made it an industry standard for the handling of corrosive, abrasive and viscous fluids as well as those that must be transferred without contaminating the product. Vanton now offers the most comprehensive line of thermoplastic pumps in the industry.
Stay in touch
(+44) 01260 277040
Vanton Pumps (Europe) Ltd.
Unit 4, Royle Park
Congleton CW12 1JJ