Products / Flanges / Industry Standard

EG-F-066

Industry Standard Class 250 Blind Flanges

Solid flange for closing a flanged opening. Match the class, facing and bolt pattern of the mating flange.

SeriesIndustry Standard
Class250
Size rangeNPS 26–48
Size entries12
Industry Standard Class 250 Blind Flanges

Representative form. Refer to the size table for the selected dimensions.

Dimension key

Dimension symbols for Industry Standard Class 250 Blind Flanges

Dimensions & drilling

in = inches · lb = pounds

Scroll the table horizontally to see all dimensions. Approximate weights are for reference.

Catalogue ref.Nominal pipe size (NPS)OD (O)Thickness (T)RF diameter (R)Approx. weightBolt circle (C)Bolt holesHole diameter
EG-F-066-0012638.25 in2.81 in32.44 in853 lb34.50 in281.88 in
EG-F-066-0022840.75 in2.94 in34.94 in1022 lb37.00 in281.88 in
EG-F-066-0033043.00 in3.00 in37.19 in1168 lb39.25 in281.88 in
EG-F-066-0043245.25 in3.12 in39.44 in1353 lb41.50 in281.88 in
EG-F-066-0053447.50 in3.25 in41.44 in1560 lb43.50 in281.88 in
EG-F-066-0063650.00 in3.38 in43.69 in1792 lb46.00 in322.13 in
EG-F-066-0073852.25 in3.44 in45.69 in2003 lb48.00 in322.13 in
EG-F-066-0084054.50 in3.56 in47.94 in2223 lb50.25 in362.13 in
EG-F-066-0094257.00 in3.69 in50.44 in2533 lb52.75 in362.13 in
EG-F-066-0104459.25 in3.75 in52.69 in2793 lb55.00 in362.13 in
EG-F-066-0114661.50 in3.88 in54.94 in3109 lb57.25 in402.13 in
EG-F-066-0124865.00 in4.00 in58.44 in3599 lb60.75 in402.13 in

Selection notes

Facing in this dimensional series: 1/16 in raised face (RF).

A flat face (FF) can be specified with the inquiry.

Class designations are not direct pressure values. Confirm material grade, temperature, facing and the applicable standard edition before ordering.

Specify your flange.

Send the standard, class, size, material and quantity. Add a drawing for custom requirements.