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Backflow

Preventing backflow of the fluid handled into a centrifugal pump is vital to avoid the risk ...

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Back pull-out design

Back pull-out design refers to a centrifugal pump design type which meets refineries' requirements ...

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Backstop

The backstop's function is to prevent the pump from running in reverse rotation. The backstop works ...

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Back-to-back impeller pump

Back-to-back impeller pump: double-suction, two-stage volute casing pump with axially split casing

Back-to-back impeller pumps are fitted with several impellers in back-to-back arrangement on a common ...

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Back vane

The back vane is a radial narrow vane on the rear shroud (viewed in flow direction) of a radial ...

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Balance disc

The balance disc serves to balance axial thrust. It is usually capable of fully balancing axial thrust.

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Balance drum

The balance drum is a device designed to balance axial thrust generated by impellers; it is usually ...

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Balancing

Balancing is a process used to correct the unequal distribution of geometric mass (see Unbalance). In ...

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Balancing device

The balancing device on centrifugal pumps is designed to fully or partially compensate axial thrust ...

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Balancing flow

The balancing flow is the volume flow (Qbal) required to operate the balancing device of a ...

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Balancing hole

A balancing hole serves to compensate axial thrust by balancing the pressure at the impeller.

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Ball or plug valve

The ball or plug valve is a valve whose obturator or closing element rotates about an axis at right ...

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Barrel casing pump

Barrel casing pumps are also referred to as barrel pull-out pumps.

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Barrel pull-out pump

Barrel pull-out pumps are centrifugal pumps enclosed by a casing which resembles a barrel. In the ...

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Barrier fluid

The barrier fluid (see Barrier fluid system) required to operate a double mechanical seal (see Shaft ...

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Barrier fluid system

Double mechanical seal operation (see Shaft seal) requires barrier fluid pressure (see also Barrier ...

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Basement drainage pump

Basement drainage pumps are small, usually transportable drainage pumps used for dewatering cellars.

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Baseplate

In the context of the installation of centrifugal pumps, the baseplate serves as a joint base for the ...

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Bearing

A bearing is a component which allows relative motion and reduces friction between moving machine ...

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Bellmouth

Bellmouth: High specific speed pump with bellmouth and flow straightener

A bellmouth, also called a suction bellmouth in connection with centrifugal pumps, is a nozzle-shaped ...

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Bellows

Bellows consist of a corrugated flexible tube generally made of plastic, rubber or metal (stainless ...

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Belt drive

The belt drive is a non-positive-locking power transmission device that uses friction to transfer ...

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Bernoulli's equation

Developed by Daniel Bernoulli, Bernoulli's equation is an energy balance equation in fluid mechanics ...

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Bilge pump

The name of this pump refers to the bilge being the lowest compartment of a ship and, less often, the ...

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Bimetall

A bimetal is also called a thermobimetal and is an overload protector that activates when subjected ...

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Bimetal switch

A bimetal switch changes its switching status relative to the temperature. If the temperature is ...

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Biogas plant

A biogas plant generates biogas from biomass (e. g. semi-liquid manure, plant silage). Organic matter ...

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BLDC motor

BLDC stands for “brushless direct current” and signifies that the motor is an electronically ...

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Board section

In the graphical representation of a multiply curved vane in plan projection, the board section is a ...

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Boiler feed pump

Boiler feed pump: Barrel pull-out model with tapping stage

Boiler feed pumps are also referred to as feed pumps (see Reactor pump) and designed as multistage ...

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Boiler recirculation pump

A boiler recirculation pump is a circulating pump which is installed inside a boiler.

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Booster pump

Booster pumps serve to provide the required inlet head for a cavitation-free operation of the main ...

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Borehole pump

Borehole pumps are vertical pumps designed for wells and boreholes. The well/borehole diameters can ...

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Boundary layer

In flowing fluids, the boundary layer is the area in the immediate vicinity of a solid wall where the ...

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Bow thruster

A bow thruster is a propeller pump installed as a transversal propulsion device beneath the water ...

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Branch fitting

Branch fittings are piping elements installed to allow a fluid flow to join or leave the flow in a ...

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Breakaway torque

Breakaway torque refers to the maximum torque required to set interconnected stator and rotor ...

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Bubbler control

Bubbler control refers to a method applied by a bubbler control system, which is used to determine ...

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Building management system

The term building management system encompasses computer-based controls and observation and ...

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Bus

A wiring system and its associated control components are referred to as a bus in data processing.

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Butterfly valve

The butterfly valve is a valve which controls the fluid flow by turning a disc (usually a 90° angle ...

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Bypass

The term bypass means to circumvent or bridge. In centrifugal pump technology, it refers to a line ...

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