Water pressure booster pump Karcher BP 2 Cistern (2028) for cisterns and rainwater systems

The Karcher BP 2 Cistern (2028) is a compact water pressure booster pump designed for connection to cisterns and rainwater harvesting systems. It stabilizes and increases water pressure from storage tanks to supply outdoor household fixtures and garden irrigation setups. The unit is intended for retrofitting to existing tank outlets and supply lines; compatibility with local fittings and installation requirements should be verified before purchase.

Advantages

The pump offers consistent pressure delivery suitable for light to moderate domestic tasks and garden watering without requiring a large installation footprint. Its compact design allows installation close to the cistern or inside service compartments, and its external connections are compatible with common plumbing arrangements. The unit operates with relatively low noise and is engineered for reliable, continuous use with stored rainwater or collected greywater when used within manufacturer guidance.

Suitable for

• Garden irrigation and sprinklers fed from cisterns or rainwater tanks
• Toilet flushing and outdoor domestic water points supplied from storage tanks
• Supplying water to washing stations, hose connections and low-pressure appliances

Key specifications

• Application: pressure boosting for cisterns and rainwater systems
• Design: compact booster pump for retrofit installation
• Suitable media: harvested rainwater and non-aggressive greywater compliant with local regulations
• Installation location: indoor or sheltered outdoor cistern areas
• Noise level: designed for low to moderate acoustic emission during operation

How to use

Connect the pump to the cistern outlet and the downstream supply line according to local plumbing standards and the pump manufacturer’s installation instructions. Ensure inlet filters or strainers are fitted to prevent debris entering the pump. After plumbing connections are secured, prime the system if required and restore power following the electrical safety rules applicable in your area. Check for leaks and verify that the boosted pressure meets the needs of the connected fixtures.

Usage recommendations

Confirm compatibility with your cistern outlet, fittings and any backflow prevention requirements before installation. Use appropriate filtration and periodic cleaning to avoid sediment-related wear. Follow local regulations for using harvested rainwater in domestic systems and refer to the manufacturer’s maintenance schedule to ensure long service life.