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 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.

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.

Graymills Pumps

Suction coolant Pump

IMS25E 1/4

$444.27

Suction Coolant pump - self priming

Graymills pumps are typically found on OEM machine tool equipment and are thus well suited for replacement or retrofit machine tool pumping applications. These pumps can also be used on other industrial applica...

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Hypro Pumps

Cast Iron Gear pump 3/8

GMCV3VA4

$1,826.07

Rotary Cast Iron Gear pump 3/8". 303 SS fasteners, steel gears.

Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

Use...

1HP 3/8" Learn More

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Oberdorfer Pumps

N993 Pump & motor

N993RM-J07

$1,238.00

Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.
Gear pumps are positive displac...

1/2HP 115/230v Relief Vavle Learn More

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Oberdorfer Pumps

Bronze gear pump

N993Q-J46

$1,749.00

Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.
Gear pumps are positive displac...

1/2HP 115/230v Learn More

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Oberdorfer Pumps

N991 Gear PUMP & motor

N991M-J07

$818.00

Gear PUMP & motor. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.
Gear pumps a...

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Oberdorfer Pumps

N994 Gear Pump & Motor

N994H-J46

$2,040.00

Gear Pump. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.
Gear pumps are posit...

1/2HP 115/230v 1/2" Learn More

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Hypro Pumps

Bronze Rotary Gear pump

GMBN5VB6

$2,943.93

Rotary Gear pump with electric motor. 303 SS fastners, Ryton gears. Heavy duty rotary external Gear pump, heavy duty with motor.
Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discha...

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Oberdorfer Pumps

N992R Gear Pump & Mtr

N992RM-J07

$1,142.90

Rotary bronze gear pump with electric motor. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long s...

1/2Hp 115/230v ODP Learn More

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Hypro Pumps

Bronze Gear pump

GMBN4VA5

$2,616.44

Rotary Gear pump 3/8". 303 SS fasteners, Ryton gears.
Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

Use for pre...

3/4" 1.5HP 115/230V ODP Learn More

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Hypro Pumps

Cast Iron Gear pump 1/4"

GMCV2VA3

$1,530.98

Rotary Cast Iron Gear pump end. 303 SS fasteners, steel gears.

Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

Hypr...

3/4HP 115/230v ODP 1/4" Learn More

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