When testing for pressure differential in pool filters, which pressure is expected for DE filters?

In the context of DE (Diatomaceous Earth) filters, the acceptable pressure differential when testing is typically around 10 psi. This figure reflects the expected operational pressure for properly functioning DE filters, indicating the effectiveness of the filtration system. A pressure differential of approximately 10 psi suggests that the filter is able to properly circulate and filter water without excessive pressure loss, which would imply efficient operation.

If the pressure differential is significantly above this level, it may indicate that the filter is becoming clogged or that there is a need for maintenance, such as replacing the DE media. Maintaining the correct pressure range ensures optimal filtration and prevents undue strain on the pump and filter system, promoting longevity and efficiency in pool operation.