Tantalum/2.5%W (Tungsten) tube Design and fabricated per ASME SECT. V111. DIV. 1 1988 and 1998 ADDENDA TEMA “C” design pressure tube side 6.9 bar + full vacuum (100 psig + full vacuum) @ 204 degrees C (400 degrees F), shell side 6.9 bar + full vacuum (100 psig + full vacuum) @ 204 degrees C (400 degrees F) on a 28.6mm (1 1/8”) triangle pitch, double grooved roller expanded and seal welded tubes, (2) 304L stainless steel tube sheets with Tantalum/2.5% W (Tungsten) lining, (2) Tantalum/2.5%W (Tungsten) lined channel heads with a flat removeable end cover 304L stainless steel shell with expansion bellows (40) Teflon/PTFE internal baffle plates, 39 spaces @ 50.8mm (2”) 39 spaces @ 50.8mm (2”)