Self-Priming Pump
Self priming pumps are able to pull prime after loosing prime or in some cases can run dry and initiate priming. Centrifugal pumps which SOME are called self-priming actually need to be primed the very first time and then after should hold prime or start up again if pump has retained its priming liquid in its volute. These pumps do not prime from a dry condition.
The second type of Self Priming pump is a positive displacement one and can pull prime completely on its own from often a dry condition. These would be diaphragm / mud Pumps.
Self-priming pumps all have a common limit to how high they can lift or prime. This is often 25 feet maximum and with some pumps may take up to 5 minutes. While some are limited to only a few feet vertical suction lift.
Self Prime pumps come in all materials like Cast Iron, FRP, Aluminum and Stainless. Powered by electric motors, gas / diesel engines, PTO / pedestal and air / pneumatic.
Many self priming pumps are able to handle debris / trash / solids, while others are for high pressure (fire fighting, irrigation, washdown).
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Oberdorfer Pumps
Bronze Pedestal Gear Pump W Relief Valve
N4000LRS3
$911.30Bronze Pedestal Gear Pump With Relief Valve. Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings, Chillers (Dynaflux) often used with welders. See performance chart for motor speed VS HP VS performance.
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1/2" w/ relief valve Learn More -
Oberdorfer Pumps
Bronze Marine pump AC
300B-01F26
$2,448.81Bronze marine pump. Pump for boat air conditioning cooling water. Self priming pump with 1/3 hp motor. Mounts to a NEMA 56J motor with a threaded shaft. Shaft sleeve is Monel for maximum corrosion resistance in Salt water. Self priming / suctio...115v 1/3HP Learn More -
Oberdorfer Pumps
Marine AC Cooling Water Pump
300BP-F57
$2,200.38Bronze self priming pump with 1/3 hp motor. Mounts to a NEMA 56J motor with a threaded shaft. Self priming / suction lift to 20 feet. (15 ft without a foot or check valve)Bronze models with Monel shaft sleeve - Ideal for marine service ( air con...
1/3HP 230/460v Bronze Learn More -
Oberdorfer Pumps
Raw Water pump Yacht AC
300B-01J26
$2,506.27Bronze marine pump. Pump for boat air conditioning cooling water. Self priming pump with 1/3 hp motor. Mounts to a NEMA 56J motor with a threaded shaft. Shaft sleeve is MONEL for maximum corrosion resistance in Salt water. Self priming / suctio...115v 1/3HP Learn More -
Oberdorfer Pumps
3/4" Bronze gear pump 1HP Oberdorfer
N970H-N76
$2,611.08Oberdorfer 3/4" Bronze rotary gear pump with relief valve and close coupled to a 1 HP 24VDC 1725 RPM motor. Often used to pump Diesel fuel. Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made ...24vDC Learn More -
Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor & relief valve
N990RH-M46
$2,748.20Oberdorfer Close coupled bronze rotary gear pumps.- Bronze Construction with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- The pump drive shaft is connected to the motor shaf...
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Oberdorfer Pumps
3/4" Bronze gear pump 3/4HP
N970H-M46
$1,597.703/4" Bronze rotary gear pump with relief valve and close coupled to a 3/4 HP 115v/1/60 1150 RPM TEFC motor. Shaft speed and flow are directly proportional. Motor HP needs to increase with a increase in pump pressure. The nature of a positive disp... -
Oberdorfer Pumps
Bronze Pedestal Gear Pump
N9000E
$1,103.90Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
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Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N9000R
$1,357.20Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by t...
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Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N7000RS17
$1,657.00Bronze Pedestal Gear pump with relief valve and FKM mechanical shaft seal. Often used as a oil pump on large ships to pre-lube the bearings or where high temperature liquid is being pumped.- Gear pumps are positive displacement pumps. Each sha...
FKM Mech Seal Learn More
