PURCHASE INCLUDES: (1) wm6 pressure tank. Includes 1x4 brass tank tee kit(9 items total) BRAND NEW NEVER BEEN USED! 5 YEAR WARRANTY THROUGH ME--BUYER PAYS RETURN SHIPPING.... Factory pre-charged pressure: 38 PSI; Replaceable air cell assures easier field servicing. Greater drawdown than comparably sized steel tanks yields greater efficiency. Extended labor warranty option is available to homeowners. Won’t rust in corrosive environments, particularly important in coastal regions. Quicker and less costly to install, usually requiring only one person and fewer man-hours. Wider pressure setting differential provides greater flexibility.