Bollfilter Pos 7 Piston

The Bollfilter Pos 7 Piston is a specific type of backwash filter piston (piston) from the Bollfilter brand, which serves as position 7 in certain systems and is part of the filter element, often in combination with a filter candle holder or screen insert for dirt separation, ensuring long cleaning intervals and low pressure loss with high strength through mechanical filter media such as star screens or fleeces (depending on the exact model).