Bacteria filter, eliminating the cap and float assembly. This filter will prevent fluids and other contaminatnts from damaging the pump. This durable unit continues to meet the need for controlled vacuum regulation from 0" up to 22" Hg with a flow rate of 28 Ipm. Standard features: Vibration-free easy-to-read regulator gauge. Wire basket accommodates a variety of canisters. Quick-connect tubing for all connections. Hydrophobic/ bacteria filter eliminates pump flooding, and prevents contaminant damage. 1 filter included with every pump.