Used 17.7 Graphite tube heat exchanger. Rated 75 psi @ 360 deg. F. Both sides, 6 5/8″ o.d. steel shell, vertical with (2) lug supports and (2) 2″ flange service connections. Heads, tube sheets and tubes constructed of impervious graphite. Has a floating head with 2″ process vent. Fixed end has haveg 3″ dia. Tee w/one side blanked. Mfg. By croll-reynolds model st6, serial #68486.
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