Standard FITTING, UNION, REDUCER/EXPANDER BULKHEAD, FLARELESS AND SHORT FLARELESS 2017-09-15 CURRENT AS4681C
Standard FITTING, UNION, REDUCER/EXPANDER BULKHEAD, FLARELESS AND SHORT FLARELESS 2013-01-11 HISTORICAL AS4681B
Standard FITTING, UNION, REDUCER/EXPANDER BULKHEAD, FLARELESS AND SHORT FLARELESS 2004-07-16 HISTORICAL AS4681A
Standard UNION, REDUCER, /EXPANDER BULKHEAD, FLARELESS AND SHORT FLARELESS 1992-07-01 HISTORICAL AS4681