CHEM-GARD
CGM Magnetically Driven Sealless Centrifugal Pumps
•
POLYPROPYLENE
(PP)
• POLYVINYLIDENE
FLUORIDE (PVDF)
• Flows to 600
gpm
• Heads to 280 feet
• Ratings to 45 hp
• Temperatures to
275° F
Vanton
Chem-Gard® CGM-ANSI magnetically driven end suction process
pumps are sealless, single stage, volute type centrifugals
which meet ANSI B73.1 process pump specifications and
conform to Hydraulic Institutes Standards. They are designed
to reflect the latest clean air regulations, to be environmentally
safe, and to provide for a leak-proof transfer of corrosive,
toxic, hazardous and volatile liquids. These are not lined
pumps. All fluid contact pumps are made of solid, molded,
stand-alone, chemically inert thermoplastic components.
This avoids inherent liner-related dangers of pinpoint
porosity, substrate separation due to faulty application
or differential expansion, and surface abrasion.
Power is transmitted by high performance permanent rare
earth magnets, with inner magnet rotor assembly encapsulated
in PVDF or polypropylene. The Vanton design utilizes a
dual nonmetallic containment can assembly consisting of
a fluoropolymer for the inner can in direct fluid contact,
backed by rugged composite rigid outer can. This avoids
troublesome eddy currents that reduce pump efficiency
by loss of magnetic force. Maintenance costs and spare
parts inventory are minimized by the fact that CGM pump
sizes use interchangeable components.
CHEM-GARD
CGM Pump Construction Details
1.Dual
nonmetallic containment can assembly with a fluoropolymer
inner can to resist corrosive fluids, backed by a rigid
nonmetallic composite outer can. This construction avoids
troublesome eddy currents and enhances efficiency.
2.Teflon* sleeve assembly completely isolates the large
diameter stainless steel shaft from the fluid.
3.Pump casing, inner magnet bearing housing and Impeller
are molded from homogeneous, virgin thermoplastics (polypropylene
or polyvinylidene fluoride). Metal armor provides structural
protection and permits the pump to withstand the some
nozzle loadings as metal pumps.
4.High performance permanent rare earth magnets offer
power ratings to 45 hp for flow rates to 600 gpm at heads
to 280 feet. The pumps are recommended for service at
temperatures to 275'F
5.Low PV stationary bearings and rotating sleeve/thrust
bearings of silicon carbide are standard. Ultrapure alumina
ceramic and other materials are available as options.
6.Dynamically balanced, closed vane thermoplastic impellers
with molded-in, encapsulated stainless inserts to assure
rigidity are key locked to the shaft.
7.Wide-open fluid passages provide for continuous flow
of fresh liquid for cooling and lubricating the internal
bearings.
8.Drive shaft bearing housing is furnished with heavy
duty, sealed, grease lubricated ball bearings. It is readily
adaptable to other lubrication methods.
9.Optional air-cooled dry running tertiary seal. (API
requirement)
10.ANSI standard construction assures simple retrofitting
in installations using conventional mechanically sealed
process pumps.
