Page 47 - Mechanical Products Installation Handbook IH-1000M

INSTALLATION INSTRUCTIONS 39 HDPE Couplings
Figure 9095 HDPE Coupling
• 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 4. Place the housings over the gasket, ensure the gasket stays centered between the marks made on the pipe ends. Also make sure that housing tongue and groove mate correctly.
• WARNING
The Figure 9095 HDPE Coupling features a tongue and groove design and mechanism. This design requires the coupling is always installed so the tongue and groove mate properly. Attempting to install the coupling tongue-to- tongue or groove-to-groove will result in joint failure, property damage or serious injury.
Step 5. Insert the bolts and hand-tighten the nuts. Make sure that the oval neck of the bolt engages into the bolt hole of the housing.
Step 6. Tighten nuts alternately and equally until the bolt pads meet and make metal-to-metal contact. Tighten nuts by another one quarter to one half turn to make sure the nuts and bolts are tight and secure. The use of a torque wrench is not required.
Note: Uneven tightening of bolts and nuts can cause the gasket to be pinched, resulting in an immediate or delayed leak.
Step 3b.
Step 4.
Step 5.
Step 6.