Choosing the right pump - gravity fed 'vented' systems

Pump pressure rating

The following charts are intended as a guide only - a particular shower model may well have specific water pressure and water flow requirements.

Shower specifications and performance vary considerably, making it necessary to check the shower manufacturers product requirements as well as the users preference.

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Pumps are available in different sizes, graded by the amount of water pressure they can generate.

Pumps are rated in 'bar' and typical ratings range from 1.5 bar to 4.5 bar.

Pressure Rating
0.1 - 0.5 bar 0.5 - 1.5 bar 1.5 - 3.0 bar 3.0 - 4.5 bar +
Gravity Low Boost Medium Boost High Boost

 

Pump Pressure Rating

1.5 1.8 2.0 2.6 3.0 4.0 4.5
Single Shower -
- Two Showers
- Bathroom -
- Whole House - 1 Bathroom Whole House - 2 Bathrooms