2011 Alfa Laval plate and Frame heat exchanger for ammonia chilling glycol service. Includes RVS +15F ammonia surge drum: 48 inch diameter x 12 ft. 9 in. long (1200 gallons). Alfa Laval model T20-BWFD, serial 30113-89439, year 2011. Heat exchanger pressure ratings: MAWP 150/300 PSI at 200F, MDMT: -20F at 150/300 PSI (glycol/ammonia). Surface area: 1254 sq. ft. Order 7653992. RVS surge drum: serial 46082, year 2011, Nat'l. Bd. 23084, MAWP 300 PSI at 300F, MDMT -50F at 300F. Skid footprint: 6 ft. x 22 ft. (WI)