This Everpure EV9437-11 High Flow CSR quad-MC2 ystem with LPA has a low pressure alarm signals to notify when cartrisges need changing.. The SR-X with SS-IMF cartridge inhibits scale buildup in ice machines and coffee brewers. It's durable slim bowl design makes cartridge change outs easy to handle.. The EverPure EV9437-11 filter's sanitary cartridge replacement is simple, quick, and clean. It has 4 MC 1/2 micron precoat cartridges. It's Tightly spun EC110 sediment cartridge delivers 10 micron nominal filtration.