9
AODDAMPENER™
4. Place the wetted housing in a vise with soft jaws. Clean and dry the internal housing surface, taking particular care to ensure the
flange area is completely clean and dry.
5. Place the PTFE diaphragm in the wetted housing with the dome (convex) side down. Place the non-wetted housing and diaphragm
sub-assembly onto the wetted housing with bolt holes aligned. Ensure the diaphragms fit together snugly to minimize any air
between them.
6. Insert bolts with flat washers through the top side. Attach flat washers and lock nuts on the bottom side for each bolt. Lubricate bolt
threads with anti-seize compound or oil before installing nuts to prevent galling.
7. Torque bolts in a star pattern according to the following torque specifications:
▪ AOD-10, 1” inlet model, (10) 3/8” bolts
−
17 ft-lb / 23 Nm
▪ AOD-15 and AOD-20, 1.5” and 2” inlet models, (12) 7/16” bolts
−
30 ft-lb / 40 Nm
▪ AOD-30, 3” inlet model, (24) 7/16” bolts
−
27 ft-lb / 36 Nm
