Page 28 - Mechanical Products Installation Handbook IH-1000M

20 INSTALLATION INSTRUCTIONS Couplings
Rigid and Flexible (14 to 24 Inch)
• WARNING
Always read and understand the instructions including the “Installation Guidelines” provided on page 15. Failure to follow these instructions may result in improper product installation, joint failure, leakage, serious personal injury, and/or property damage.
Note: EDPM tri-seal gaskets are recommended for applications below 40°F (4°C).
This section covers the following products, listed below with their cor- responding tech data sheets.
Large Diameter Couplings
• Figure 772 Rigid Coupling (TDS G140 and TDS G141)
• Figure 707 Heavy Duty Flexible Coupling (TDS G130)
Step 1. Follow the preliminary set-up steps of the Grooved Pipe and Gasket Preparation section on pages 16 and 17. Failure to follow these preliminary set-up steps before product installation can adversely affect subsequent system performance.
Step 2. Install the gasket by placing it over the end of the first pipe section. For larger pipe diameters, it may be easier to roll the gasket inside out, then on to the pipe end. Ensure that the gasket does not extend beyond the end of the pipe.
Step 3. Bring both pipe ends together, ensure proper alignment and slide the gasket into posi- tion. If the gasket was turned inside out per step 2, roll the gasket over into position. Center it between the grooved portions of each pipe.
Note: The gasket should not protrude into the grooves on either pipe segment or extend between the pipe ends.
Step 4. Place the assembly over the gasket and verify that the housing keys are fully engaged into the pipe grooves.
Step 2.
Step 3.
Step 4.