Page 36 - Mechanical Products Installation Handbook IH-1000M

28 INSTALLATION INSTRUCTIONS Couplings
Installation-Ready Couplings
• 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.
This section covers the following products, listed below with their corresponding tech data sheets.
Pivot-Bolt Rigid Couplings
• Figure 740 Pivot-Bolt Rigid Coupling (TDS G144 - Ductile Iron) • Figure 640 Pivot-Bolt Rigid Coupling (TDS G512 - Copper)
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. Loosen the nut on the coupling bolt only. Loosen nut to the end of the bolt and swing out of slotted hole. Remove the gasket.
NOTICE
Do not loosen or adjust the nuts on the Pivot Bolt. The Pivot Bolt assembly is factory-preset for optimal performance. In the unlikely event that the nuts have become loosened, tighten the nuts on the Pivot Bolt to a minimum torque of 10ft.-lbs. (15 Nm).
Step 2. Verify that the coupling and gasket grade are correct for the application intended. Refer to Technical Data Sheet G610 for addi- tional gasket information.
Apply a fine layer of petroleum-free silicone lubricant to the inner and outer sealing sur- faces of the gasket. Be sure to include the sealing edges as well as in the outer surfaces. To prevent deterioration of the gasket mate- rial, a petroleum lubricant should never be used on Grade “E”, Grade “EN” EPDM, Grade “EHT” EPDM, or Grade “L” Silicone gaskets. For
assembly below 40°F (4°C), a petroleum-free silicone lubricant must be used to prevent freezing of the lubricant.
• For NSF Requirement:
In order to retain the NSF 61 certification, an NSF 61 certified lubricant must be used for the intended service.
Dow Corning* No. 7 Release Compound is recommended by GRINNELL Mechanical Products.
Step 1.
Step 2.
Step 3a.