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A-GAP  look up translate image
The gap between the tips of the blades on an impeller and the inner diameter of the case bore. If the A-gap is too small, this can be a factor in high pump vibration whereas, if the A-gap is too large, recirculation may occur, leading to pump inefficiency.

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  • A-GAP  look up translate image
    The gap between the tips of the blades on an impeller and the inner diameter of the case bore. If the A-gap is too small, this can be a factor in high pump vibration whereas, if the A-gap is too large, recirculation may occur, leading to pump inefficiency.
    A.N.S.I. STANDARD  look up translate image
    Founded in 1918, the American National Standards Institute is a non-profit organization that oversees the application of voluntary standards for products. These standards apply to pumps manufactured in the United States. American National Standards Institute. A set of specifications (envelope dimensions) for centrifugal pumps manufactured in the United States
    A.N.S.I. STANDARD  look up translate image
    Founded in 1918, the American National Standards Institute is a non-profit organization that oversees the application of voluntary standards for products. These standards apply to pumps manufactured in the United States.
    A.P.I. GLAND  look up translate image
    A seal gland that incorporates important safety features as specified by the American Petroleum institute. The main component is a Disaster bushing that prevents sparking of metal components in the event of a bearing failure. Other components include a drain and vent connection and a flushing connection.
    A.P.I. GLAND  look up translate image
    A seal gland that incorporates important safety features as specified by the American Petroleum institute. The main component is a Disaster bushing that prevents sparking of metal components in the event of a bearing failure. Other components include a drain and vent connection and a flushing connection.
    A.P.I. SPECIFICATIONS  look up translate image
    Specifications recommended by the American Petroleum Institute. These specify many safety features of pumps and piping involved in pumping flammable or dangerous substances.
    A.P.I. SPECIFICATIONS  look up translate image
    Specifications recommended by the American Petroleum Institute. These specify many safety features of pumps and piping involved in pumping flammable or dangerous substances.
    ABSOLUTE PRESSURE  look up translate image
    The absolute pressure is the sum of the gauge or dial pressure and the atmospheric pressure (14.7psi). If your pump gauge reads 150 psi, then the absolute pressure will be 164.7 psi. Atmospheric pressure added to gauge pressure.
    ABSOLUTE PRESSURE  look up translate image
    The absolute pressure is the sum of the gauge or dial pressure and the atmospheric pressure (14.7psi). If your pump gauge reads 150 psi, then the absolute pressure will be 164.7 psi.
    ABSORBED POWER  look up translate image
    This is the sum of the hydraulic power (work done by achieving the flowrate and head) and the frictional losses.
    ABSORBED POWER  look up translate image
    This is the sum of the hydraulic power (work done by achieving the flowrate and head) and the frictional losses.
    ACCELERATION  look up translate image
    The rate of change of velocity. As velocity is measured in distance per unit time (e.g. m/s), acceleration is measured in change in velocity per unit of time (e.g. m/s2).
    ACCELERATION  look up translate image
    The rate of change of velocity. As velocity is measured in distance per unit time (e.g. m/s), acceleration is measured in change in velocity per unit of time (e.g. m/s2).
    ACCELEROMETER  look up translate image
    A device that measures proper acceleration. Not necessarily the rate of change of velocity, but the weight experienced by a mass at rest in the frame of reference of the device. An accelerometer at rest on the surface of the earth would measure an acceleration of 9.8 m/s2 normal to the surface due to gravity.
    ACCELEROMETER  look up translate image
    A device that measures proper acceleration. Not necessarily the rate of change of velocity, but the weight experienced by a mass at rest in the frame of reference of the device. An accelerometer at rest on the surface of the earth would measure an acceleration of 9.8 m/s2 normal to the surface due to gravity.
    ACCUMULATOR  look up translate image
    A device used to prevent the pump cycling on and off each time a tap is opened in a system. It acts to stabilize the pressure by providing excess water storage in conjunction with a flexible bladder that is air pressurized. As water flows out of the system, it is first pulled from the accumulator tank, and as this tank empties, the pressurized bladder expands to prevent the entire system from a pressure drop. Once the tank is empty, the pressure of the system drops, the pump switches on and refills the tank.
    ACCUMULATOR  look up translate image
    A device used to prevent the pump cycling on and off each time a tap is opened in a system. It acts to stabilize the pressure by providing excess water storage in conjunction with a flexible bladder that is air pressurized. As water flows out of the system, it is first pulled from the accumulator tank, and as this tank empties, the pressurized bladder expands to prevent the entire system from a pressure drop. Once the tank is empty, the pressure of the system drops, the pump switches on and refills the tank.
    ACOUSTIC  look up translate image
    Anything pertaining to sound or to waves generated by sound.
    ACOUSTIC  look up translate image
    Anything pertaining to sound or to waves generated by sound.
    ACOUSTIC RESONANCE  look up translate image
    Can occur in any closed or open pipe system due to pump excitation pulsation frequency. This happens when the return of the reflected pressure wave coincides with the generation of the next pulse of pressure. In this case a standing wave is formed inside the fluid filled chamber. This can cause catastrophic failure of systems.
    ACOUSTIC RESONANCE  look up translate image
    Can occur in any closed or open pipe system due to pump excitation pulsation frequency. This happens when the return of the reflected pressure wave coincides with the generation of the next pulse of pressure. In this case a standing wave is formed inside the fluid filled chamber. This can cause catastrophic failure of systems.
    ACTIVE METAL  look up translate image
    Prior to passivation, the formation of a thin oxide on the surface of metals to protect them from corrosion, the metal is known as “active”.
    ACTIVE METAL  look up translate image
    Prior to passivation, the formation of a thin oxide on the surface of metals to protect them from corrosion, the metal is known as “active”.
    ADAPTER  look up translate image
    A coupling that connects the pump to the rest of the system. Allows the pump to integrate with the downstream parts of the system. Connects and aligns the power end of an ANSI pump to the wet end.
    ADAPTER  look up translate image
    A coupling that connects the pump to the rest of the system. Allows the pump to integrate with the downstream parts of the system.
    AFFINITY LAWS  look up translate image
    They are a set of laws that relate the variables of performance, (impeller shaft speed, head, flow rate) to power. They are useful to compare the performance of different pumps. They predict how capacity, head and horsepower are affected by changes in the centrifugal pump impeller diameter or shaft speed.
    AFFINITY LAWS  look up translate image
    They are a set of laws that relate the variables of performance, (impeller shaft speed, head, flow rate) to power. They are useful to compare the performance of different pumps.
    AIR INGESTION  look up translate image
    Air leaks into the pump, causing cavitation and pump performance degradation. Air ingestion can be due to leaking flanges, valves located above the fluid line, porous intake lines, faulty shaft seals among others. Air is coming into the stuffing box because of a negative suction pressure.
    AIR INGESTION  look up translate image
    Air leaks into the pump, causing cavitation and pump performance degradation. Air ingestion can be due to leaking flanges, valves located above the fluid line, porous intake lines, faulty shaft seals among others.
    ALIGNMENT  look up translate image
    In the pump world, alignment refers to the alignment of the centerline of the pump shaft with the centerline of the driver shaft. This is critical, because a small amount of misalignment on the power end, results in a large amount at the wet end, where the seals are usually located. The centerline of the pump is perfectly aligned with the centerline of the driver (usually an electric motor).
    ALIGNMENT  look up translate image
    In the pump world, alignment refers to the alignment of the centerline of the pump shaft with the centerline of the driver shaft. This is critical, because a small amount of misalignment on the power end, results in a large amount at the wet end, where the seals are usually located.
    ALLOWABLE PIPE STRESS  look up translate image
    This is a measure of the allowable stresses in pipe walls according to ASTM specification A-53, and A-106 among others. The allowable pipe stress is given by the code for a given pipe construction material, and temperature. From these factors, one can calculate the allowable pressure permitted by code.
    ALLOWABLE PIPE STRESS  look up translate image
    This is a measure of the allowable stresses in pipe walls according to ASTM specification A-53, and A-106 among others. The allowable pipe stress is given by the code for a given pipe construction material, and temperature. From these factors, one can calculate the allowable pressure permitted by code.
    ALPHA SINTERED  look up translate image
    One form of Silicon Carbide. To bond SiC powder into ceramics, the powder is sintered. At temperatures above 1700°C, the alpha form of SiC is formed.
    ALPHA SINTERED  look up translate image
    One form of Silicon Carbide. To bond SiC powder into ceramics, the powder is sintered. At temperatures above 1700°C, the alpha form of SiC is formed.
    AMBIENT HEAT/PRESSURE  look up translate image
    The environmental conditions found where the equipment is operating. In this case either the temperature (ambient heat) or pressure (ambient pressure). The heat or pressure in the area where the equipment is located.
    AMBIENT HEAT/PRESSURE  look up translate image
    The environmental conditions found where the equipment is operating. In this case either the temperature (ambient heat) or pressure (ambient pressure).
    ANGULAR CONTACT BALL BEARING  look up translate image
    These ball bearings have races that are displaced with respect to each other along the bearing axis. This allows the bearing to accommodate both radial and axial loads.
    ANGULAR CONTACT BALL BEARING  look up translate image
    These ball bearings have races that are displaced with respect to each other along the bearing axis. This allows the bearing to accommodate both radial and axial loads.
    ANNEALING  look up translate image
    To make metal stronger through a heating process. The metal is heated to somewhat below its melting temperature. To soften the metal by heating it to a predetermined temperature somewhere below its melting point.
    ANNEALING  look up translate image
    To make metal stronger through a heating process. The metal is heated to somewhat below its melting temperature.
    ANODIZE  look up translate image
    A treatment used in particular on aluminum. The treatment adds a heavy layer of protective oxide coating.
    ANODIZE  look up translate image
    A treatment used in particular on aluminum. The treatment adds a heavy layer of protective oxide coating.
    ANTI VORTEX PLATE  look up translate image
    An anti vortex plate does just what it says. It prevents the formation of a vortex at intake suction points by increasing the path length. Vortexes can cause disturbances at vertical intakes by allowing air to enter the system along with the fluid being pumped.
    ANTI VORTEX PLATE  look up translate image
    An anti vortex plate does just what it says. It prevents the formation of a vortex at intake suction points by increasing the path length. Vortexes can cause disturbances at vertical intakes by allowing air to enter the system along with the fluid being pumped.
    ANTI-FRICTION BEARING  look up translate image
    A ball or roller bearing that reduces friction. Major consideration during maintenance.
    ANTI-FRICTION BEARING  look up translate image
    A ball or roller bearing that reduces friction. Major consideration during maintenance.
    ANTI-ROTATION DEVICE  look up translate image
    A device that prevents one rotating piece from rotating with respect to a second adjacent part. Usually designed as a pin or key.
    ANTI-ROTATION DEVICE  look up translate image
    A device that prevents one rotating piece from rotating with respect to a second adjacent part. Usually designed as a pin or key.
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    Pump terms
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    Created by admin
    Created on 2019-11-22 00:39:57
    Number of terms 656
    Last added Yield point by admin
    2019-11-22 01:02:05
    Members
    Sources
  • Glossary of Pump Terms
    www.globalpumps.com.au
    Has anyone ever baffled you with pump terminology or jargon? Global Pumps has collated a range of terms with there meanings. Learn more here.
  • http://www.powerpointpumps.com/glossary-of-pump-terms.pdf
    www.powerpointpumps.com
  • Visual Pump Glossary
    www.pumpfundamentals.com
    Pump terminology with images