Dresser Style 31 Line Cap 10227510 Industrial Pipeline 6.900 O.D. 711 POSI-HOLD
One follower ring is welded to the cap itself, and only one gasket is required. The style 31 is regularly supplied with a 1 IN NPT vent and plug, off-center. The Dresser style 31 line cap is also available in an insulating design with insulating gasket, insulating sleeve and a pipe end separator.