A butterfly valve is from a family of valves called quarter-turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway.
Pipe connection between the suction and discharge side of a booster set in order to bypass water when the pumps are not in operation.
The calculated transmission loss is the sum of the heat loss from each individual section of the building
To select the right pump and achieve proper balance in the system, it is necessary to calculate the pressure loss throughout the system.
In order to calculate pressure loss in a heating or cooling system it is essential to know the volume flow rate Q. The volume flow rate is based on heat demand, temperature difference, specific energy capacity, and density.
A carbon credit can be used for trading in the carbon market. One carbon credit consists of one ton of CO2 (or sometimes CO2 equivalent gases).
When you pay someone else to remove the greenhouse gasses (GHGs) you emitted into the atmosphere, it’s called carbon offsetting.
Cast iron is an alloy of iron, silicon and carbon.
Cavitation occurs when the pressure of a liquid at a constant temperature falls below its saturated vapour pressure point (or boiling point).
The CE mark is the manufacturer’s/importer’s proof that the product meets the requirements stated in the relevant EU Directives and EN standards.
