Mega 500 030 rota spray water boost base unit mega electronics 500 030 p having a water supply with good pressure connected to your rota spray ensures fast efficient spray washing of your pcbs and prevents chemical cross contamination p p when local water pressure is low the 500 030 rota spray water boost base unit should be considered in place of a standard base unit the water boost base unit contains a reservoir of mains water and a submersible pump to ensure high water pressure is d