‘A’ Model

The ‘A’ Model features pressurised, oil lubrication of a fully self-contained, sealed chamber. The seals and lower bearing are located on a stainless-steel shaft sleeve and pressure is supplied by an external oil feed pipe that extends to the lubricator above liquid level at the top of the pump.

The ‘A’ Model’s oil lubrication has stood the test of time since 1972.

‘W’ Model

The ‘W’ Model employs a water-lubricated lower sleeve just like the original Dumac Filter-Cut® design.

The ‘W’ Model is of simple construction with all the key features of the standard Filter-Cut®: agitation and a true cutting action.