Water heater expansion tank Easy to install Strong steel tank with enamel finish prevents corrosion in damp areas Heavy duty diaphragm for extended life Polypropylene liner provides a corrosion resistant reservoir Welded air charge fitting with protective plastic cap for corrosion resistance and air tight seal 200 deg. F max. 150 PSI max. 40 PSI factory pre-charge 11" dia. x 15"H 3/4" MPT connection Does not include saddle valve (Ace no. 4264420) 4.4 gal. capacity For water heater...