Page 51 - Mechanical Products Installation Handbook IH-1000M

INSTALLATION INSTRUCTIONS 43 HDPE Couplings
Figure 9094 HDPE Flange Coupling
Step 4. Tighten the draw bolts and nuts alter- nately and equally until the housing bolt pads meet forming metal-to-metal contact. Tighten by another 1/4 to 1/2 turn to ensure the nuts and bolts are tight and secure.
Step 5. Cover the sealing edges and outer sur- faces of the gasket with a fine layer of lubri- cant. Use a petroleum-free silicone-based lubricant such as Dow Corning* No. 7 Release Compound.
• CAUTION
To avoid injuries from sharp machined gripping teeth, wear protective gloves when handling couplings.
To prevent degradation of the polymer, do not use hydrocarbon-based oils, grease, or soap- based solutions.
Step 6. Mount the gasket into the cavity between the pipe OD and flange recess. Make sure that the bottom of the gasket (the marking side) is positioned and seated against the bottom of the flange recess.
Step 7. Bring the adjoining flange face to face with the Figure 9094 flange.
Step 4.
Step 5.
Step 6.
Step 7.