Boltex Reference Manual

Dimensional Tolerances • AWWA Standard

ANSI/AWWA C207

O Outside Diameter   ±1/8" ±3.2 mm
B Inside Diameter   +1/16", -0.0" +1.6 mm, -0.0"
C Thickness 18" and smaller
20" and larger		 +1/8", -0.0"
+3/16", -1/16"		 +3.2 mm, -0.79 mm
+4.8 mm, -0.0 mm
Y Lenth thru Hub 18" and smaller
20" and larger		 +1/8", -1/32"
3/16", -1/16"		 +3.2 mm, -0.79 mm
+4.8 mm, -1.6 mm
  Drilling Bolt Circle Diameter
Bolt Hole Spacing		 ±1/16"
±1/32"		 ±1.6 mm
±0.79 mm
  Facing All classes shall be flat faced.