Air Receivers, AR-650 Vertical and Horizontal Air Receivers 3 AR-650 Built in accordance with ASME section VIII, DIV. 1 Latest Edition. Specifications Capacity 650 gal Diameter varies Overall Height varies Pressure Rating 132 psi150 psi Inlet Size 3 in Outlet Size 3 in Misc. Couplings 3/4″ – 2″ Drawing Quote Form Request information