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Variable frequency drive
A variable frequency drive is used for adjusting a flow or pressure to the actual demand. It controls the frequency of the electrical power supplied to a pump or a fan. Significant power savings can be achieved when using a VFD.
Vortex impeller
The benefit of a vortex impeller over a channel impeller is the minimised risk of clogging.
Wastewater
Wastewater is a common designation for any water that in one or another way has been affected in quality by human influence.
Wastewater
Wastewater is a common designation for any water that in one or another way has been affected in quality by human influence.
Wastewater pumping station
Pumping stations in sewage collection systems are normally designed to handle raw sewage that is fed from underground gravity pipelines.
Water filtration
Filtration of water is a method of combating microorganisms. This procedure treats only bacteria which passes the filter. This method should be regarded as a gatekeeper.
Water flow rate
Required heating capacity and required temperature differential of the medium are relevant when calculating the design water flow rate for a heating system.
Water hammer
Water hammer can cause pipelines to break or induced damage to equipment if the water hammer is severe enough.
Water hammering
Destructive force that relates to the incompressibility of water. The phenomenon often occurs when filling an empty pipe or quickly closing a valve. It often leads to pipe noise or even destruction of pipes, valves etc.
Water hardness
Hard water can be categorized by the ions found in the water. Hardness in water is defined as the presence of multivalent cations.