A filtration apparatus includes a screen assembly with a screen having a plurality of through holes, a slidable support to support the screen, and a retainer plate to slidably engage the support for securing the screen between the support and the plate. The support and the plate each define an opening aligned with the plurality of through holes such that a flowable material, such as butter, can pass through the screen. A housing of the filtration apparatus includes a screen assembly receiving portion configured to slidably receive the screen assembly, and a throughput portion for receiving a flowable material that extends through the housing in a direction transverse to the screen assembly receiving portion. A transition couples the housing to a supply line and is for delivering the flowable material to the housing.
