PURCHASE INCLUDES: (1) WX-202 pressure tank. BRAND NEW NEVER BEEN USED! 7 YEAR WARRANTY THROUGH ME--BUYER PAYS RETURN SHIPPING.... Factory pre-charged pressure: 38 PSI; System connection: 1" NPT; Max. operating temperature: 200F; Max. working pressure: 125 PSI; Tank volume: 20 gallons; Height: 31-5/8"; Diameter: 15-3/8"; Shipping weight: 33 lbs; Shell: Steel; Diaphragm: Heavy Duty Butyl; Liner: Virgin Polypropylene; Coating: Blue Enamel.