Lining Material: Polypropylene *Material: Steel *Packaging Type: Boxed *Product Type: Pre-Charged Vertical Pressure Well Tank *Sub Brand: Amtrol *Brand Name: Water Worker *Capacity: 4 *Connection Size: 3/4 *Connection Type: MPT *Color: Blue *Depth: 11.5 *Gender: Male *Height: 15 *Maximum Temperature: 200 *UL Listed: Yes *Width: 11.5 4.4 gallon of total volume *Designed to meet the requirements of and are listed by the NSF under ANSI/NSF Std 61 *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