All cutouts have a special bolt pattern.

They will only bolt to the BadlanzHPE,Inc. flange and Y-adapters.

2.5 Inch valve..cross width of butterfly.....

2.5 inch valve cross width of bolt holes.....

3.0 and 3.5 valve cross width of butterfly....

3.5 valve cross width of bolt holes.....

4.0 inch cutout cross width of butterfly.....

4.0 inch cutout cross width of bolt holes.....