Page 45 - Mechanical Products Installation Handbook IH-1000M

INSTALLATION INSTRUCTIONS 37 Plain End Couplings
Figure 909 Plain End Coupling
Step 5. Install the gasket by placing it com- pletely over one of the pipe ends that is to be joined by the coupling and ensure that the gasket lip does not extend beyond the end of the pipe.
Step 6. Bring both pipe ends together, ensure proper alignment, and slide the gasket back over the second pipe end so that it is properly centered between the two inside marks made in Step 2.
Step 7. With both bolts removed, place the coupling housings over the gasket. Verify that the housings are over the gasket and that the tongue and groove features are properly engaged. Ensure that the housings are properly centered between the two outer marks made in Step 3.
Step 8. Insert the bolts into the coupling and rotate the nuts until finger tight. Verify that the bolt heads are fully recessed in the housing.
Step 9. Alternate when tightening the nuts until properly tightened to the required bolt torque.
Note: For the recommended bolt torque values, refer to the Plain End Systems section of this manual. Use of a torque wrench is recom- mended to ensure proper installation. Failure to use the manufacturer's settings and abide by manufacturer instructions may result in loss of warranty protection, invalidate listing certifica- tions and/or cause personal injury or property damage.
• WARNING
The coupling bolts must be tightened to the bolt torques as specified in the Figure 909 Plain End Coupling dimensional data in the Plain End Systems section of this manual. Excessive torque may damage the bolts and pipe end and cause separation under pressure. Insufficient torque may result in lower pressure perfor- mance, joint leakage, or pipe separation. Sep- aration of pipe may result in serious personal injury and/or property damage. Refer to Tech Data Sheet G190 for additional information.
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Step 6.
Step 7.
Step 8.
Step 9.