Romac Industries EC501 Installation Manual
INSTALLATION INSTRUCTIONS
ROMAC
INDUSTRIES,
INC.
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Read installation instructions rst before installing. Check parts to ensure that no damage has occurred during transit and that no
parts are missing. Also check the diameter of the pipe and the range marked on the coupling to ensure you have the proper size.
Style EC501 Coupling
Step 1 • Check the coupling parts to insure that no damage
has occurred during transit and that no parts are missing.
Step 2 • Clean pipe end for a distance of 2" greater than
length of the coupling.
Step 3 • Check area where gasket will seat on the pipe
to make sure there are no dents, projections, gouges, etc.,
that will interfere with the gasket seal. Welds must be ground
ush.
Step 4 • Place reference mark on the pipe, use the refer-
ence mark to insure a minimum of 3" inches of pipe insertion
into the center ring.
Step 5 • Place an end
ring on pipe end.
Step 6 • Lubricate the gaskets and pipe surface with a
suitable gasket lubricant.
Step 7 • Place a gasket
next to end ring, with beveled edge toward the pipe
end.
Step 8 • Slide center ring
on pipe end. The
center ring should be
centered such that the
space between the OD
of the pipe and the ID of
Document #20-9-EC501-0007 11/09/2016
the center ring is even
all around the pipe.
Step 9 • Slide gasket
into position with the beveled edge engaging the
ared end of the center
ring. Slide the end ring
into position against the
gasket.
Step 10 • Install the
end ring/end cap assembly.
4" through 8" sizes have
two separate pieces, the
end ring and the end cap.
10" and 12" sizes are one
piece. Place gasket in the
end cap.
Step 11 • Slide end cap
assembly into
center ring, with
beveled edge
of gasket facing toward center
ring. Check coupling
for proper positioning over
pipe ends using reference
marks. (See Step 4)
Step 12 • Insert bolts into end rings and
tighten. Bolt tightening should be done evenly,
alternating to diametrically opposite positions at approxi-
mately 20
ft-lbs. increments to
bring bolts
to recommended
tightness.
Note:
50 ft-lbs. torque = 12" wrench w/50 lbs. force
70 ft-lbs. torque = 12" wrench w/70 lbs. force
Nom. Pipe Diameter Torque
4" - 12" 40-50 ft-lbs.
16" 60-70 ft-lbs.
Step 13 • After pipe is pressurized, check for leakage
and tighten as necessary.
Note: Flexible Couplings do not provide protection against
possible pullout of pipe ends in unrestrained conditions.
21919 20th Avenue SE • Suite 100 • Bothell, WA 98021 • Phone (425) 951-6200 • 1-800-426-9341 • Fax (425) 951-6201
ROMAC
INDUSTRIES,
INC.
INSTALLATION INSTRUCTIONS
Style EC501 Coupling
PRECAUTIONS
1. Check diameter of pipe to make sure you are using the correct size coupling; also check gasket
to make sure it is the size you think it is.
2. Clean pipe to remove dirt and corrosion from pipe surface. Lubrication and additional cleaning
should be provided by brushing both the gasket and plain pipe end with soapy water or approved
pipe lubricant per ANSI/AWWA C111/A21.11.
3. Make sure no foreign materials lodge between gasket and pipe.
4. Avoid loose tting wrenches, or wrenches too short to achieve proper torque.
5. Keep threads free of foreign material to allow proper tightening.
6. Take extra care to follow proper bolt tightening procedures and torque recommendations. Bolts
are often not tightened enough when a torque wrench is not used.
7. Pressure test for leaks before backlling.
8. Backll and compact carefully around pipe and ttings.
9. When reinstalling parts with stainless steel hardare there may be a loss in pressure holding ability
due to worn or damaged threads during the original installation.
COMMON INSTALLATION PROBLEMS
1. Bolts are not tightened to the proper torque.
2. Rocks or debris between pipe and gasket.
3. Dirt on threads of bolts or nuts.
4. Pipe not inserted into the coupling far enough.
5. Center ring not centered evenly around pipe.
6. Too much pipe deection.
21919 20th Avenue SE • Suite 100 • Bothell, WA 98021 • Phone (425) 951-6200 • 1-800-426-9341 • Fax (425) 951-6201
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