Comparison Nasosy plus BPS 25-12S-180 12 m

1 1/2"

180 mm

vs Nasosy plus BPS 20-12S-180 12 m

1"

180 mm

The maximum flow of a pump is the amount of liquid it can pump in a certain amount of time.

Features of choosing the optimal performance option depend primarily on the purpose of the pump (see above). For example, for DHW recirculation models, the pump performance should not exceed the performance of the water heater. If the water heater is capable of delivering 10 litres per minute to the DHW circuit, then the maximum pump performance will be 10*60=600 L/h. The basic formula for calculating the performance of a heating system takes into account the power of the heater and the temperature difference at the inlet and outlet, and for the cold water system — the number of points of water intake. More detailed information about the calculations for each application can be found in special sources, and it is better to entrust the calculations themselves to professionals.

The electrical power consumed by the pump during normal operation and maximum performance.

This indicator directly depends on performance — after all, for pumping large volumes of water, an appropriate amount of energy is needed. And the power depends on two main parameters — electricity consumption and the load on the power grid, which determines the connection rules. For example, pumps with a power of more than 5 kW cannot be connected to ordinary household sockets; more detailed rules can be found in special sources.

The size of the inlet provided in the design of the pump. For plumbing threads (see Connection), the size is traditionally indicated in inches and fractions of an inch (for example, 1" or 3/4"), for flanges, the nominal diameter (DN) of the bore in millimetres is used — for example, DN65.

This parameter must match the dimensions of the mount on the pipe to which the pump is planned to be connected — otherwise, you will have to use adapters, which is not very convenient, and sometimes not recommended at all.

The size of the outlet provided in the design of the pump. The value of this parameter is completely similar to the size of the inlet (see above).