7.
Tighten the nuts evenly by alternating sides. make sure the
housings’ keys engage the grooves completely. Continue to
tighten the nuts evenly until metal-to-metal bolt pad contact
AND
the specified torque value are achieved. Refer to the “Required
Assembly Torques” table on this page.
NOTE: Both conditions of
metal-to-metal bolt pad contact AND the specified torque value
are required for proper coupling assembly.
NOTE:
It is important to tighten the nuts evenly by alternating sides
to prevent gasket pinching. deep well sockets are recommended for
proper installation due to the longer bolt lengths associated with these
products. deep well sockets provide the full nut engagement that is
necessary during tightening.
TO PREVENT LUBRICATION FROM DRYING OUT AND CAUSING
GASKET PINCHING, ALWAYS BRING THE BOLT PADS INTO METAL-
TO-METAL CONTACT IMMEDIATELY AFTER ASSEMBLING THE
COUPLING ONTO THE PIPE.
Required Assembly Torques
Coupling Size
Required Torques
Nominal Size
inches
Actual Outside Diameter
Inches/mm
ft-lbs
(N•m)
14 – 18
14.000 – 18.000
250
355.6 – 457.0
340
20 – 24
20.000 – 24.000
375
508.0 – 610.0
500
Style W07 and W77 Helpful Information
Size
Number of
Bolts/Nuts
Nut Size
Socket Size
Nominal
Size
inches
Actual
Outside
Diameter
inches
mm
inches/Metric
inches/Metric
14 – 18
14.000 – 18.000
2
1
1 5/8
355.6 – 457.0
M24
41
20 – 24
20.000 – 24.000
2
1 1/8
1 13/16
508.0 – 610.0
M27
46
WARNING
Nuts must be tightened evenly until both conditions of metal-
•
to-metal bolt pad contact AND the specified torque value are
achieved.
Always bring the bolt pads into metal-to-metal contact
•
immediately after assembling the coupling onto the pipe.
Failure to follow these instructions could cause joint failure,
resulting in serious personal injury and/or property damage.
I-W07/W77_4
I-W07/W77
INSTALLATION INSTRUCTIONS
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REV_E
Couplings
STYLE W07 RIGID AND
STYLE W77 FLExIBLE