Designed to meet the requirements of, and are listed by the National Sanitation Foundation (NSF) under ANSI/NSF Std 61;The Butyl diaphragm has seamless construction and is designed to flex rather than stretch and crease like bladder tanks;The polypropylene liner for the water reservoir will not flake, chip, crack or peel and does not impart taste and odor to the water;Diaphragm, liner isolate water from contact with deep drawn steel domed shell - twice as strong as rolled steel shell of same thickness;A high gloss enamel finish protects tank from the elements

• WaterWorker HT-4B In-Line Pressure Well Tank, 4-Gallon Capacity, Blue
• 4-Gallon
• Blue

WaterWorker HT-4B In-Line Pressure Well Tank, 4-Gallon Capacity, BlueWaterworker