Importance

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Abstract

A method of improving pool surface agitation, to reduce settling of debris at low filter pump RPMs, comprising use of standard eyeball fittings that permits unrestricted return flow, and a second eyeball fitting configuration comprising a bi-fold split-disk butterfly valve being normally biased into a closed position. The biasing is calibrated to selectively inhibit filter pump return flow below a threshold flow rate. One or more standard eyeball fittings and one or more second eyeball fittings are alternately installed in a pool's sidewall. When the filter pump is operated at high RPMs, the selective return flow comprises return flow being discharged through standard eyeball fittings and through second eyeball fittings; and when the filter pump setting is reduced whereby return flow is below the threshold, the selective return flow comprises butterfly valves in second eyeball fittings closing, with the return flow being discharged solely through the standard eyeball fittings.

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First Claim