How to know if you need?
Filter for the installation of a pressure booster pump

Source: Grundfos.com


A conventional Grundfos pump for residential use is designed to pump clean water. But what is defined as clean water? And how do you know if the booster pump needs a suction filter?
According to Grundfos’ definition, water is clean when it has a chlorine content of less than 1 part per million (ppm) and a maximum chloride content of 300 ppm:
- Clean water = Max. 1 ppm chlorine
- Max. 300 ppm of chloride
If you must pump another liquid in the installation, you must select a pump made of a material that can support the components of that liquid.


Need a suction filter?
Too much debris in the water can damage the pump’s hydraulic system. If you know that the booster pump will pump dirty water, we recommend using a mechanical suction filter. Our suction filters, made from durable composite materials, are easy to install, clean and maintain.
They feature swivel connections that allow for flexible installation. Simply remove the suction connection and screw it onto the filter of your choice. There are two thread types to choose from: 1″ Rp and 1″ NPT. Our filters are compatible with SCALA1, SCALA2 and JET pumps, and it’s easy to find the right filter number for your pump.
To clean the filter, simply unscrew it from the housing, empty the housing and rinse the filter. Keeping the filter clean will go a long way in protecting the pump.