1982 AJAX DPC 60 Natural Gas Integral Compressor, Hour Meter Reads: N/a; Overall Condition: Good; Unit Runs & Operates As It Should?: Yes; Psi: 1250; (muffler 11 X 22" Exhaust Pipe 10 X 1), AJAX-cooper Engine, 60 Hp, 5-1/4" X 3-3/4 X 8" Bore.