Jargon Buster

1 phase

the electric power supply distribution of 110 volts and 230 volts. Used mainly for domestic and light industrial applications

2 pole motor

a motor which rotates at between 2800 and 3000 RPM. Generally higher wear that on 4 pole machines

3 phase

the electric power supply distribution of 400 volts + . Used mainly for industrial applications

4 pole motor

a motor which rotates at between 1400 and 1500 RPM. Generally a lower wear rate than 2 pole machines

aggresive liquid

A liquid that is likely to cause wear by corrosion from e.g acids, certain chemicals and seawater.

agitator

A device that is fitted on the end of the rotor, before the impeller. Fitted with vanes, it twists with the impeller to movement of solids and slurry.

anti vibration feet

rubber cushions to: 1) prevent damage caused by vibration during pump operation 2) stop pump twisting during start up 3) protect sump floor

anti-airlock

a one way valve that enables trapped air in a pump casing to be released to prevent an air-lock

ATEX

an EU directive describing what pumps are allowed in an environment with an explosive atmosphere e.g. gas, vapour and dust.

auto coupling

a cast iron set, used with a rail or rails (not supplied), that allows a pump to be raised an lowered without emptying a chamber during maintenance. Comprises a pedestal, guide hook and top bracket.

automatic nozzle

a nozzle that will cut the fuel supply when the end is submerged to prevent a spillage

automatic priming

the pump will be able to pump without any priming water

automatic pump

a pump that has a float control or pressure switch to start and stop without an operator

back pull out

a design feature which allows the complete rotating element of the pump to be removed for servicing without disconnecting any pipework

bar

a metric unit of pressure equivalent to 10 metres of water or 14.22 PSI

base mounting

fixing to a horizontal surface

batch register

a meter to measure the current quantity being delivered

battery operation

a pump that must only be powered by DC electric from a battery.

biodiesel

a fuel that is derived from vegetable oil or animal fat

black water

waste water containing fecal matter and urine

body

the outer part of the pump

buna

nitrile rubber which is resistant to fuel and oils

bypass valve

a relief valve to bypass liquid and prevent excessive pressure build up

capacitor

an electrical component that will start a single phase motor

centistokes

The unit of kinematic viscosity measured as m2/s.

centrifugal pump

a pump that uses an impeller to move a fluid by converting rotational kinetic energy to the hydrodynamic energy.

chrome steel

stainless steel

class A accuracy

classification of the meter's ability to measure low flows. Class A has the least ability to do this. Most European nations use Class B meters.

class B accuracy

classification of the meter's ability to measure low flows. Class B has more ability to do this than Class A. Most European nations use Class B meters.

clean water,

water that is clear but is not suitable for drinking

clogging

when an impeller stops rotating due to a blockage

column of water

a measurement of vertical liquid usually from the discharge of the pump

continuously rated

a pump or motor that can be operated constantly

corrosion resistant

a material that has a lower rate of corrosion compared to another in a specified environment

crocodile clips

spring loaded teeth, with serrated jaws and insulated handles, for creating a temporary electrical connection on batery terminals

cut in pressure

the pressure value at which a pump will start operating

cutter pump

a pump that will intake liquid containing soft solids and cut them into small pieces, then pump through a pipe over a short distance.

D.C.

direct current from a battery

delivery side

The discharge/outlet side of the pump

demand pump

a pump that automatically senses a change in the pressure in a pipe, from a valve/tap opening and closing, and turns the pump on or off accordingly.

demand switch

a switch that automatically senses a change in the pressure in a pipe, from a valve/tap opening and closing, turning the pump on or off accordingly.

depth of submersion

the maximum depth at which a pump can be submerged

diaphragm

a sheet of rubber that is fixed at its edge for moving liquids or activating a pressure switch

diesel

a fuel that is used in diesel engines whose fuel ignition occurs without a spark

diffuser

a type of volute used with high pressure pumps to direct water to the discharge

dirty water

water that is cloudy containing very small particles

DOL

Direct on line, a method of starting electric motors.

drop hose

reinforced, high pressure hose for diesel, oil and air that is weather and ozone resistant

dry running

operating a pump without liquid

duty cycle

the period of time a pump can run for and then to be idle.

elastomers

the rubber components inside a pump chamber that may come in to contact with a liquid

electric start

starting an engine driven pump from a battery and switch instead of using the recoil

enbloc

a pump end directly fixed to the motor, with supports and flanges built in accordance to DIN standard dimensions.

enclosure

the mechanical or electrical casings

epdm

a synthetic rubber which is resistant to alkalis, ketones, salt/sea water and is a good insulator

Exlosion proof

the description for pumps that are allowed in an environment with an explosive atmosphere e.g. gas, vapour and dust.

fibrous

solids that float or suspended, which are long and fibrous and of an organic nature

flash point

the temperature point at which a volatile liquid will vapourise to form an ignitable mixture in air

floatswitch

a device connected to a pump, directly or indirectly, that detects the liquid level and automatically turns the pump on or off accordingly

floatswitch - integral

a device wired directly to a pump, that detects the liquid level and automatically turns the pump on or off accordingly

foot valve

a non return valve with a strainer

free passage

the dimension of a particle that a pump can take

free standing

a pump not connected to an auto coupling but fitted with a hose union connected to discharge pipe for portable use or permanent installation.

full load current

the maximum current expected when the device is running, and defines the rating required for circuit breakers.

glass reinforced polyester

is a composite material or fibre-reinforced polymer made of a plastic reinforced by fine fibers made of glass

gravity fed

liquid under pressure from the force of gravity only

gravity system

a system supplied with liquid that is under pressure from the force of gravity

grinder pump

a pump that will intake liquid containing soft solids and cut them into very small pieces, then pump through a pipe over a long distance.

grounded earth point

a direct physical connection to earth

guide hook

a cast iron claw that is fixed to a sewage pump to move safely up and down on guide rails during maintenance. It ensure perfect connection of the pump with the discharge pipework

guide hook adaptor

an assembly that converts / enables a Tsurumi sewage pump to be used on Flygt auto coupling system

guide rail kit

a cast iron set, used with a rail or rails (not supplied), that allows a pump to be raised an lowered without emptying a chamber during maintenance. Comprises a pedestal, guide hook and top bracket.

guide rails

steel or stainless steel tube required for use with guide rail kit/auto coupling

hand/off/auto switch

a 3 position switch with two sets of contacts: one set is made in hand (direct running) and the other is made in auto (e.g. float switches).

hard solids

solids that are hard and/or abrasive which may not disintegrate during pumping

head cover

the component of a submersible pump that fits over the top of the stator

high head pump

a pump that can develop high pressure.

high viscosity liquid

a liquid that retains fluidity but flows slowly i.e. has a high centipoise value e.g. honey has a high viscocity compared to water.

IDS rubber cable

cable with idividually screened cable for mines and quarry use

impeller

the rotating component of a centrifugal pump that transfers the energy from the motor to "move"" a liquid"

internal overloads

a component inside a motor to protect it from over heating. It senses when the motor amperage is beyond the limit and opens the circuit, stopping the pump. They can reset after the motor cools off.

iron, chromium,

a hard iron that work extremely well in intensive abrasive wear conditions. Superior to ductile iron.

Iron, ductile

an iron that is impact, fatigue resistant and unlikely to crack. Superior to traditional cast iron .

jet pump

a type of centrifugal pump with a type of volute that comprises a nozzle for creating high heads/pressure

light sewage

waste water that contains faeces, urine and toilet tissue

line fuse

an electrical device that disconnects the power to the pump, from the supply, during overcurrent.

lip seal

a component, in rubber with a compression spring, to seal a pump shaft from liquid penetration. Good for clean liquids only.

low flash point

a liquid that will combust easily

low viscosity liquid

a liquid that flows quickly i.e. has a low centipoise value e.g. water has a low viscocity compared to honey

manual nozzle

a nozzle that will not cut the fuel supply when the end is submerged to prevent a spillage

manual pump

a pump that does not have a float control or pressure switch to start and stop. It will require an operator to control it.

mechanical seal, single

a component,with one sealing element to seal a pump shaft from liquid penetration. Generally used for low pressure and non-abrasive liquids

mechanical seal, double

a component, with two sealing elements to seal a pump shaft from liquid penetration. Generally used for high pressures and abrasive liquids

mono block

a pump which Is directly coupled to the motor.

motor fuses

fuses fitted inside a control panel

motor protector

an electrical device that disconnects the power to the pump, from the supply, during overcurrent.

motor supports

the brackets which a surface pump motor rests on and for fixing

multi stage

a centrifugal pump that contains two or more impellers. Normally associated with high head/pressure pumps.

neoprene

a sysnthetic rubber which is resistant to oil, solvents, alkalines and ozone. It can tolerate high temperatures.

non abrasive liquid

a liquid that does not contain sand, silt or any other material that can cause abrasion

non self priming

a pump that needs the pump casing filled with water before starting to enable it to function. Running without water will damage the pump.

oil alert

a detection device in an engine that will switch off an engine, and/or prevent it starting, if the oil level drops below the minimum operating level.

oil chamber

the compartment that a mechanical seal operates in

oil lifter

a mechanism that supplies oil to the top faces of a mechanical seal even when the level in the oil chamber drops below the minimum operating level

on demand

the automatic supply of liquid from a pump on opening of a valve or tap

overload protection device

an electrical device that disconnects the power to the pump, from the supply, during overcurrent.

partial immersion

when a submersible pump is not fully submerged and the of motor cooling becomes important.

pedestal

the cast iron bracket, fixed at the bootom of a chamber, that a submersible pump is connected to as part of a guide rail system.

peripheral pump

a pump that has an impeller with slots giving energy to the liquid. Good head at fairly small flow.

permanently pipe

pipework that is not temporary i.e. it is fixed or buried

petrol

a fuel that is used in petrol engines whose fuel ignition occurs with a spark

polyurethane

a thermoplastic that is rigid and smooth with a sealed surface that is impermeable to water.

ponds

a small or medium sized area of water containing aquatic life and /or vegetation.

positive displacement

the movement of a liquid by trapping a fixed amount of liquid and then forcing(displacing) this into the discharge pipe with a constant flow

potable water

water that is safe to drink by humans

pressure switch

a switch that closes an electrical contact when a certain set pressure has been reached. Can work on pressure rise or pressure drop.

pressure vessel

a container designed to hold water at high pressure

priming/primed

the action of adding water to or having added water or water being held within the pump casing ready for operation

probe

an electronic level sensor.

puddle sucker

a pump or pumping accessory which can remove water down to a very low level and/or water which would remain after a traditional pump would stop pumping due the height of the strainer

pulse output

a device that converts the rotary motion of a water meter into electronic pulses for measurement by a remotely located monitoring device

pump chamber

a tank for storing waste water and sewage for use in pumping stations

pumped system

a mechanical arrangement that moves liquid under pressure of a pump.

PVC

abreviation for polyvinyl chloride. A plastic that used for pipes and insulation of electrical cables.

quick release couplings

a hose fitting that provides a fast connection or disconnection without using threads or flanges

rails

steel or stainless steel tube required for use with guide rail kit/auto coupling

residue pump

a submersible which can remove water which would remain after a traditional pump would stop pumping due the height of the strainer

rocker switch

an electrical on/off switch that rocks when pressed

rotary vane pump

a positive displacement pump that has vanes, forming chambers, which slide against the pump casing, fill and pump under pressure

running current

indicates the current expected in normal operation, which is normally noticeably less than the starting current

Self priming

a pump which retains fluid within the body and is then capable of a suction lift when restarting without an external suction device

semi trash pump

a pump that will accept solids in suspension, but does not have an inspection cover or wear ring found on a trash pump

sewage

waste water that contains faeces, urine, toilet tissue and menstrual protection items

shaft

the rotor of a pump and the "pump end"" of the crank shaft of an engine pump."

side outlet

a submersible pump which has the discharge nozzle located on the side of the volute casing

single channel impeller

an impeller with a single vane. Very large flow and large free passage of solids, which pass through the impeller

single impeller

a centrifugal pump that contains one impeller. Normally associated with drainage, sewage, solids handling etc

single phase

the electric power supply distribution of 110 volts and 230 volts. Used mainly for domestic and light industrial applications

site water,

waste water found on a construction site which contains sand and silt in suspension

soft solids

solids that are not hard nor abrasive which are likely to disintegrate during pumping

solvent

a clear, colourless liquid with an odour that disolves substances into a solution

spring check valve

a type of non return valve, spring loaded, fixed in the centre. Used mainly when a liquid is clear of debris.

stage

a description of an impeller when inside a pump

star delta

alternative starting method to DOL for large motors. Voltage is reduced as motor is started then full voltgae is applied near full speed.

starter and motor protection box

a simple control box that has an electrical device to protect a pump during overcurrent. They often have manual on/off switches.

static electricity

the build up of electrical charges on the surface of a metrial which then move by means of an electrical discharge e.g. a spark

strainer

a type of filter to prevent unwanted particles entering a pump. Integral on a submersible pump and external, on the suction pipe inlet, on a surface pump

suction cover

a plate in pump which faces the impeller. When combined with the volute, it forces the liquid to discharge from the pump by converting velocity to pressure. It is wearing part.

suction lift

the negative pressure created by a surface pump, which is expressed as the verticle distance from the centre line of the pump to the water surface

suction side

the side of a pump that has the suction pipe

suction strainer

a filter, on the suction pipe inlet of a surface pump, to prevent entry of unwanted particles.

surge reduction chamber

on a diaphragm pump this is the verticle column, which draws in liquid during the up stroke, to limit peak stress during the down stroke.

suspended solids

solids that float or are suspended, not hard nor abrasive and which are likely to disintegrate during pumping

swing check valve

a type of non return valve that is flap, fixed at one side. Used mainly when a liquid contains solids.

three phase

the electric power supply distribution of 400 volts + . Used mainly for industrial applications

top outlet

a pump which has the discharge nozzle located at the top of the pump

transformer

an electrical device in a submersible pump that will takes electricity at a high voltage and reduce it to a low voltage

trash

litter, solids and debris that are submerged or floating in a liquid

trash pump

a pump that will accept solids in suspension, which has an inspection cover and a wear ring

tungsten carbide tips

the leading edges of the impeller of a cutter pump of a wear resistant material

twin impeller

a centrifugal pump that contains two impellers. Normally associated with high head/pressure pumps.

urethane

a modern rubber used on impellers to give exceptional abrasion resistance three times greater than cast iron

vent valve

a one way valve that enables trapped air in a pump casing to be released to prevent an air-lock

venturi

a component of a pump with a nozzle to increase pressure caused by pressure differential (like in a jet engine)

viscosity

a measure of a liquid's resistance to flow or, basically, the of its thickness.

viton

a sysnthetic rubber developed by DuPont for fuels, oils, inorganic acids and other aggressive chemicals

volute

an inner component that surrounds an impeller and directs the liquid to the discharge nozzle

vortex impeller

an impeller with a series of vanes. Capable of a large flow with free passage of large solids and long and fibrous material.

water features

fountains, pools, ponds, cascades, waterfalls and streams powered by pumps

wear plate

a type of suction cover that is designed to be a sacrificial wearing part.

wetted parts

all the components inside a pump that are in contact with the liquid being pumped