DIMENSION TABLES FOR 20mm (3/4 Inch) FLANGES

Dimensional tables for PN, ANSI and BS10 DN20mm (3/4 Inch) flanges.

Dimensions Tables for Flanges
DIMENSION TABLES FOR 20mm (3/4 Inch) FLANGES
BS EN
1092
DIAMETER
OF FLANGE
(A)
BOLT
CIRCLE
DIAMETER
(G)
number
OF BOLTS
BOLT SIZE DIAMETER
OF HOLES
(D)
DIAMETER
OF RAISED
FACE
(C)
HEIGHT
OF RAISED
FACE
(F)
THICKNESS
(E)

PN

PN 6 90 65 4 M10 11 50 2 14
PN 10 105 75 4 M12 14 58 2 18
PN 16 105 75 4 M12 14 58 2 18
PN 25 105 75 4 M12 14 58 2 18
PN 40 105 75 4 M12 14 58 2 18
PN 64 130 90 4 M16 18 58 2 22
PN 100 130 90 4 M16 18 58 2 22

ANSI

Class 125 / 150 3 7/8 (98) 2 3/4 (70) 4 1/2 (13) 5/8 (16) 1 11/16 (43) 1/16 (2) 9/16 (14)
Class 300 4 5/8 (117) 3 1/4 (83) 4 5/8 (16) 3/4 (19) 1 11/16 (43) 1/16 (2) 5/8 (16)
Class 600 4 5/8 (117) 3 1/4 (83) 4 5/8 (16) 3/4 (19) 1 11/16 (43) 1/4 (6) 5/8 (16)
Class 900 5 1/8 (130) 3 1/2 (89) 4 3/4 (19) 7/8 (22) 1 11/16 (43) 1/4 (6) 1 (25)
Class 1500 5 1/8 (130) 3 1/2 (89) 4 3/4 (19) 7/8 (22) 1 11/16 (43) 1/4 (6) 1 (25)

BS 10

Table A 4 (102) 2 7/8 (73) 4 1/2 (13) 9/16 (14) - - -
Table D 4 (102) 2 7/8 (73) 4 1/2 (13) 9/16 (14) - - 3/8 (10)
Table E 4 (102) 2 7/8 (73) 4 1/2 (13) 9/16 (14) - - 3/8 (10)
Table F 4 (102) 2 7/8 (73) 4 1/2 (13) 9/16 (14) - - 3/8 (10)
Table H 4 1/2 (114) 3 1/4 (83) 4 5/8 (16) 11/16 (17) 2 1/4 (57) 1/16 (2) 1/2 (13)