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INSTALLATION INSTRUCTIONS
Style 995N Coupling for Plain-End HDPE Pipe
4. Check the gasket to make sure it is
suitable for the intended service. The
color code identifies the gasket grade.
Lubricate the gasket in accordance with
the "Lubricant Compatibility for Gaskets"
table on the opposite side of this tag. DO
NOT use Victaulic lubricant on HDPE pipe.
Always consult with the pipe manufacturer
for lubricant compatibility requirements.
5. Install the gasket over the pipe end.
Make sure the gasket does not overhang
the pipe end.
6. Align and bring the pipe ends together.
Slide the gasket into position by centering
it between the first set of pipe marks.
NOTE: The space between the pipe ends
must never exceed ¼ inch/6 mm for
2 - 4-inch/60.3 - 114.3-mm sizes and
5/16 inch/8 mm for 5-inch/141.3-mm and
larger sizes.
For complete contact information, visit www.victaulic.com
IT-995N
0911 REV E
UPDATED 04/2012
Z000995001
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2012 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
WARNING
• H ousings must be mated properly tongue-to-recess.
• B olts must be tightened evenly to achieve metal-to-
metal contact at the bolt pads.
Tongue
Recess
Tongue
Failure to follow these instructions could cause joint
separation, resulting in serious personal injury and/or
property damage.
Exaggerated for clarity
7. Wear gloves while handling coupling housings. The
teeth machined into the housings are sharp and can cause
injury. Install the housings over the gasket. Make sure
the tongue-and-recess features mate properly (tongue in
recess) and that the housings are centered between the
second set of pipe marks. NOTE: The second set of marks
on the pipe must indicate full insertion into the coupling.
8. Insert the bolts.
FOR 6-INCH/168.3-MM AND SMALLER SIZES: Install
one flat washer onto the end of each bolt.
FOR 8 - 12-INCH/219.1 – 323.9-MM SIZES: Install two
flat washers onto the end of each bolt.
FOR 14-INCH/355.6-MM AND LARGER SIZES: Install
one flat washer between each rocker washer and nut
(refer to instructions at right).
Thread a nut onto each bolt finger-tight. NOTE: Make sure
the oval neck of each bolt seats properly in the bolt holes.
9. Tighten all nuts evenly by alternating sides until metal-to-metal
contact occurs at the bolt pads. NOTE: It is important to tighten
all nuts evenly to prevent gasket pinching. The use of a geared
torque multiplier is recommended, since a high level of torque may
be required to achieve metal-to-metal contact at the bolt pads
(especially in colder temperatures).
Installing Special Hardware for 14-inch/355.6-mm and Larger Style 995N Couplings
1
2
3&3a
4
The bolting assembly consists of T-bolts, rocker washers, flat washers and nuts. 1 - Follow steps 1 – 7 on this installation tag.
2 - Insert a T-bolt into each bolt hole in the housings. Make sure the head of each T-bolt engages with the recess in the
housing. 3 - Install a rocker washer, then a flat washer, onto the end of each T-bolt. NOTE: The curved surface of the rocker
washer must face the bolt pad of the housing, as shown above. 3a - Thread a nut onto the end of each T-bolt until the rocker
washer contacts the coupling housing. 4 - Tighten all nuts evenly by alternating sides until metal-to-metal contact occurs at
the bolt pads. NOTE: It is important to tighten all nuts evenly to prevent gasket pinching. The use of a geared torque multiplier
is recommended, since a high level of torque may be required to achieve metal-to-metal contact at the bolt pads (especially in
colder temperatures). 5 - Inspect the finished assembly to make sure the bolt pads are in firm metal-to-metal contact. Make
sure the rocker washers are engaged in the recesses in the coupling housings.
IT-995N
Metal-to-Metal
Contact
5
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