Ubuchwepheshe be-Super Low Pressure (SLP) kanye ne-No Spring and Non-Metal Material (NSM), buthuthukisa ukucindezela okuphansi kwe-backwash okuphansi njengo-1.2bar (17psi), yonga amandla.
Yamukela ubuchwepheshe be-NSM, akukho ukuthintana okuqondile phakathi kwamanzi nensimbi, ukumelana nokugqwala okuhle kakhulu, thuthukisa inketho esebenzayo yokukhipha usawoti emanzini noma ukuhlungwa kwamanzi anosawoti.