Round AccuFlange Assembly Instructions

AccuFlange Assembly Instructions

Round AccuFlanges are manufactured as a solid ring. The 2” leg is a male slip or small end.

AccuFlange Assembly

 Start by inserting the 2” leg of the AccuFlange inside of your duct.

AccuFlange Assembly

Seat the ring flush with the end of the duct and clamp off into position.

AccuFlange

Begin securing the leg of the ring to the duct section. Place a #8 or #10 Tek screw, or spot weld 1” from the face of the flange, 6” on center around the circumference of the duct.

AccuFlange Assembly

Optional mig welding around AccuFlange to duct 10“ center. Assure button welds cover 50% onto duct and 50% onto flange for a strong weld.

AccuFlange Assembly

Seal lap joint internally with approved duct sealer used in the HVAC industry. Brush the sealer into the joint to achieve a 100% seal.

AccuFlange Assembly

Apply neoprene gasket 5/16“ thick by 3/4” wide to the face of round AccuFlange parallel with inside edge.

AccuFlange Assembly

Apply neoprene gasket completely around one of the AccuFlange rings to the beginning point. When the gasket meets, cut square so the ends butt up against each other.

AccuFlange Assembly

Align mating frames by matching the AccuFlange ring evenly around the circumference.

AccuFlange Assembly

Clamp the mating Accuflange rings, compressing the gasket until the mating rings touch.

AccuFlange Assembly

Fasten #10 Tek screws 6″ on center around the circumference of the flange face. In order to assure a proper closed joint, the rings should be clamped tightly together with the two faces touching each other prior to fastening theTek screw. Proper care should be taken in setting the clutch adjustment of your screw gun to assure your screws have 100% holding strength.

AccuFlange Assembly

Round and oval AccuFlange can be installed on reducing fittings in the same manner as a small end collar. This eliminates the need for collars unlike other traditional flange connecting systems.