Air Volume Controls - Ensures the proper balance of air to water in non-diaphram, plain steel pressure tanks, by preventing waterlogging of the tank.
Backfill - To refill an excavated area with removed earth; or the material itself that is used to refill an excavated area.
Backflow - A reverse flow in water pipes. A difference in water pressure pulls water into the water system. Also called back siphonage.
Bleeder Orifice - A small device with an air over water tank to maintain air pressure in the tank and to help prevent the tank from becoming water-logged.
Check Valve - Prevents water from flowing backwards. Used to hold pressure in the system when the pump stops. Prevents backspin, water hammer and upthrust.
Coupling - A pipe part used to join together two sections of pipe.
Drop Pipe - The pipe connecting the pump cylinder to the pump body.
Flow Control Valve - Valve used to limit the amount of pump capacity to prevent an overload condition (high amps) on the motor and upthrust condition on the pump.
Flow Rate - The measure of water volume moved in a given length of time.
Foot Valve - A screened check valve allowing water to flow into a jet when a pump is running - closes when the pump is shut off. Protects pump parts. Used on suction lift applications and located at the bottom of the suction assembly. Keeps the suction line full of liquid.
Lightning Arrestor - Installed in a control box or pressure switch for a submersible motor to prevent lightning or other power surges from damaging the pump and water system.
Pitless Adapter - An underground discharged connector used in most submersible systems to prevent freezing and reduce chances of contamination.
Potable Water - Water that is free from impurities in amounts sufficient to cause disease or harmful physiological effects and suitable for drinking.
Pressure Gauge - Measures the internal pressure.
Pressure Relief Valve - Controls maximum pressure in the system.
Pressure Switch - An electrical switch activated by system pressure to control starting and stopping of the pump.
Sediment Filter - Filter used to remove particulates from water.
Snifter Valve - A valve that allows air to enter or escape and accumulated water to be released. Provides method of injecting and holding air in pneumatic water systems that allows installer to change pressure if desired.
Torque Arrestor - A rubber friction-creation device designed to prevent damage to a pump and pump wire from startup torque/recoil that causes the pump to slap/rub the side of the casing.
Well Cap - Protective cover, usually made of aluminum, cast iron or thermoplastic, that seals the upper end of a well to keep out the elements, contaminants and vermin.
Well Casing - Steel or plastic lining permanently installed in drilled wells to prevent cave-ins or contamination by surface water.
Well Point - A hollow, conically shaped, screened metal point used to make a driven well, attached to a screened pipe with openings large enough to allow water to enter and small enough to keep the water bearing formation in place.
Well Screens - Filtering devices used to prevent excess sediment from entering the well.
Well Seal - Consists of metal plates that sandwhich a layer of rubber. As the plates bolts are tightened, lessening the distance between the plates, the rubber seal pushes out against the inside of the well casing and inwards around the outside of the pump discharge pipe.