Several types of flange are available, as listed below. The usual choice is between a Batescrew modified Table D flange, or the lower cost version rolled from flat bar. Flanges complying with the various recognised standards are also available.
MODIFIED TABLE D FLANGE. This is a Batescrew modification of
Australian Standard 2129, Table 'D'.
LOW COST ROLLED FLANGE. Rolled from flat mild steel bar. These are drilled for smaller than usual bolts, set at closer intervals. This type of flange, although non-standard, is suitable for operating heads to ten metres. It does not allow connection with standard flanges. There is a considerable cost saving in both material and bolts. Dimension tables are not available. Consult our Technical Services Dept. for details.
RECOGNISED STANDARD FLANGES. Complying with any recognised standard, eg. AS 2129; DIN 2530 CL6; ANSI 125; JIS5; may be supplied, at extra cost. These are normally used only when it is necessary to comply with specific regulations.
SQUARE FLANGE. Commonly used for connecting flap valves to headwall structures. See Flap Valves for dimensions.