800B_2006

800B_2006
MODEL
800B
BRONZE
PEDESTAL CENTRIFUGAL PUMPS
Capacity - Water at 60o F
MODEL 800B BRONZE
FEATURES
• Bronze Construction
• Heavy Duty Ball Bearings
• Designed for Pulley Drive
• Mechanical Seal
• Quiet Operation
• Handles Contaminated Liquids
• No Lubrication Required
• Closed Impeller -- High Discharge Pressure
USES
Silent, efficient, centrifugal pumping is ideal for convenient equipment location in offices, laboratories, public areas,
and living quarters. Long trouble-free service life has made
centrifugal pumps acceptable for industrial uses or wherever
clean or contaminated liquid is to be transferred or handled.
The 800B centrifugal pump has external ball bearings
isolated from the liquid being pumped. The ball bearings are
grease sealed for life requiring no maintenance.
CHARACTERISTICS
Oberdorfer centrifugal pumps have a single rotating
metal impeller. Liquid enters at the center and is thrown outward radially by centrifugal force. The impeller is not in contact with other pump parts resulting in quiet, efficient, pumping action. The flow produced is not positive which permits
the discharge line to be shut off completely without danger of
overloading motors or bursting lines. Consequently a relief
valve is not required.
The liquid flow varies directly as the pump speed--the
higher the speed the greater the flow. Horsepower required
varies directly as flow and pressure. Maximum horsepower is
required with a wide open discharge line. This is the point of
maximum flow. With a throttled discharge, the flow decreased
at a greater rate than the pressure increases thereby requiring less horsepower at the higher pressures. This is known
as an “unloading” feature of the pump.
www.oberdorfer-pumps.com
This centrifugal pump is not self priming. Normally these
pumps must be installed below the liquid level so that the liquid flows
to the pump by gravity. However, if a foot valve is used at the beginning of the suction line and all air is bled from the suction line and
pump by careful manual priming, these pumps will lift liquid on the
suction side up to 15 ft. Such a system is only as positive as the ability of the foot valve to seal and keep the suction line and pump full
of liquid. If the foot valve should leak, the pump will not prime.
The pedestal centrifugal pumps can be direct driven by electric
motors and gasoline engines or pulley driven at intermediate speeds
as listed in the capacity chart above.
Because centrifugal pumps are more efficient at higher shaft
speeds, pumping of viscous or thick liquids is difficult. It is possible
to lose as much as 40% pump performance when attempting to
pump liquids of viscosity equal to S.A.E. 30 oil at room temperature.
S.A.E. 30 oil at room temperature has a viscosity of 2000 Saybolt
Seconds Universal. More viscous liquids are not recommended for
centrifugal pumps.
Heavy liquids can be pumped; however, they demand more
horsepower in direct ratio to the weight of water. For example, carbon tetrachloride has a specific gravity of 1.6 which means it is 1.6
times heavier than water and the horsepower required is 1.6 times
water horsepower.
PHONE (800) 448-1668; (315) 437-0361
FAX (315) 463-9561
MODEL
800B
BRONZE
PEDESTAL CENTRIFUGAL PUMPS
EXPLODED VIEW AND PARTS LIST
Pump
1
2
3
4
51
61
71
8
91
10
11
No.
Screw
Screw
Plug
Body
Gasket
Impeller
Seal
Pedestal
Shaft &
Key
Ret.
Repair
Ring
Kit
Assembly
4 Req'd 3 Req'd 4 Req'd 1 Req'd 1 Req'd 1 Req'd
1
800B
5411
--5395
Repair Kit contains items 5, 6, 7, & 10.
7249
6426
32270
Bearing
1 Req'd
1 Req'd
32210
7250
1 Req'd 1 Req'd 1 Req'd
6425
6567
5650
10945
DIMENSIONS
3/06
www.oberdorfer-pumps.com
Specifications are subject to change without notice.
PHONE (800) 448-1668; (315) 437-0361
FAX (315) 463-9561
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