Page 29 - Mechanical Products Installation Handbook IH-1000M

INSTALLATION INSTRUCTIONS 21 Couplings
Rigid and Flexible (14 to 24 Inch)
Step 5. Assemble two sections of the housing by inserting a bolt into the coupling and loosely engaging the nut. For four segment couplings it may be easier to assemble two segments first.
Bring the next section of the housing into posi- tion. Insert a bolt into the coupling and finger tighten the nut.
Step 6. Alternate between bolts when tighten- ing nuts until properly tightened.
Note: Always tighten the nut and bolt set evenly. Uneven tightening can cause the gasket to pinch or bind.
When setting the torque on power impact wrenches, always refer to the manufactur- er's recommended bolt torque specifications. Failure to use the manufacturer's settings and abide by manufacturer instructions may result in loss of warranty protection, invalidate listing certifications and/or cause personal injury or property damage.
• For Flexible Couplings Only
Figure 707 Coupling housing bolt pads must be in metal to metal contact.
• For Rigid Couplings Only
On the Figure 772 Coupling there is an intended gap of up to 1/16 of an inch at each pad to allow for positive rigid gripping onto the pipe. The patented universal tongue and groove design provides protection to the back of the gasket during installation.
Step 5.
Step 6.