With many of its Home Water Pressure Systems Davey gives you a choice between conventional pressure switch control or the comfort and security of electronically operated constant-flow control devices.

Hydrascan is Davey's own unique constant pressure control unit. Hydrascan keeps the pump running while there is a demand for water, avoiding annoying stop-start operation (cycling) and fluctuating water pressure. To avoid the pump running continuously in the presence of dripping taps, etc. the pump will stop if the demand is reduced below around 2 litres per minute. Additionally, Hydrascan protects your pump by switching it off if ever the water supply becomes inadequate.