Page 25 - Mechanical Products Installation Handbook IH-1000M

INSTALLATION INSTRUCTIONS 17 Grooved Pipe and Gasket Preparation
Step 1. Inspect exterior groove and ends of the pipe to verify all burrs, loose debris, dirt, chips, paint and any other foreign material such as grease is removed. Pipe end sealing surfaces must be free from sharp edges, projections, indentations, and/or other defects.
Verify that the coupling and gasket grade are correct for the application intended. Refer to Step 1a and 2a for large diameter coupling preparation. Refer to Tech Data Sheet G610 for additional gasket information.
Step 2. To help insert pipe easily and mount coupling smoothly without pinching, the sealing edges and outer surfaces of the gasket should be covered with a fine layer of lubricant.
To prevent gasket deterioration, a petroleum- free lubricant is recommended for all EPDM gaskets. For applications below 40°F (4°C), a petroleum-free, silicone-based lubricant should be used to prevent lubricant freezing.
• For NSF Requirement:
(For Figure 672 Copper Rigid Couplings, Figure 640 Copper Pivot-Bolt Rigid Couplings and "EN" Gaskets for
IPS Couplings)
In order to retain the NSF 61 certifica- tion, an NSF 61 certified lubricant must be used for the intended service.
Dow Corning* No. 7 Release Compound is recommended by GRINNELL Mechanical Products.
Normally, no lubricant is required when using a pre-lube gasket.
*Registered Trademark of Dow Corning Corporation.
Step 1.
Step 1a.
Step 2.
Step 2a.