# 3B-PRES Pressure Feed Tank for DP-3B 20 GAL.
Simple and "Fool Proof" - describes the unique pressure feed tank accessories. Available in 20 or 40 gallon tank sizes, this heavy duty polypropylene tank allows the pressure feeding of diaphragm pumps, normally requiring suction or gravity feed only. There is an on/off float valve for water level control, and a chemical additive opening on the top of the tank for easy chlorination or other chemical treatment of the test environment. All diaphragm models are tank ready and this accessory can be added at any time!