Romac Industries XR501 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 XR501 Extended Range Couplings

For pipe ODs smaller than standard steel,

down to SDR 35 sewer, do not exceed 20 psi.

Coupling set up at factory for DI size pipe. It may be
necessary to loosen coupling bolts for some A/C pipe sizes.
Oversize A/C may require disassembly of 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 ends for a distance of 2" greater than

length of the coupling when centered over the joint.

Step 3 • Check area where gaskets will seat 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 a reference mark on the pipe an equal

distance from each pipe end for centering coupling over joint.
There should be a minimum of 3 inches of pipe insertion per
coupling end.

Step 5 • Lubricate the gaskets and pipe surface with a

suitable gasket lubricant.

Step 7 • Bring the other pipe into position (recommended

pipe gap of 1 inch).

Step 8 • Center coupling over pipe ends using the reference

marks described in Step 4.

Step 9 • Tighten bolts such that the end ring anges

remain parallel and the gaskets are evenly compressed. Bolt
tightening should be done evenly, alternating to diametrically
opposite positions at approximately 20 ft-lbs increments.
Tighten to 75 - 90 ft-lbs.

Step 6 • Slide assembled coupling completely onto one

of the pipes.

Document #20-9-0026 07/11/07

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 [phone] • 1-800-426-9341 • Fax [phone]

Note: Maximum Angular Deection of 5˚.

Step 10 • After pipe is pressurized, check for leakage

and tighten as necessary.

ROMAC
INDUSTRIES,
INC.

INSTALLATION INSTRUCTIONS

Style XR501

Extended Range Couplings

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 backlling.

8. Backll and compact carefully around pipe and ttings.

9. Couplings do not provide protection against possible pullout of pipe ends in unrestrained condi­tions.

10. When reinstalling parts with stainless steel hardware there may be a loss in pressure holding ability
due to worn or damaged threads during the original installation. Additional lubrication should be
applied.

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 deection.

7. Using on pipe smaller than standard steel at pressures greater than 20 psi.

21919 20th Avenue SE • Suite 100 • Bothell, WA 98021 • Phone [phone] • 1-800-426-9341 • Fax [phone]