Standard Features Tank: 16 gauge cold rolled steel Finish: Almond appliance grade paint for both indoor and outdoor installation Water Chambers: Top chamber is blended butyl rubber, lower water chamber is copolymer polypropylene. Connection: Welded steel NPT thread Air valve: Brass valve with O-ring seal Specifications: • Size: 20 Gallon Diaphragm Well Water Pressure Tank • Dimensions: 29.4" (H) x 16"(D) • Inlet Connection: 1" • Pressure Rating: 125 psi • Maximum working temperature: 140°F • Color: Almond • ANSI / NSF Standard 61 Approved • Actual Weight: 36 lbs • Dimension Shipping Weight: 45