Romac Industries Alpha Installation Manual

INSTALLATION INSTRUCTIONS

ROMAC
INDUSTRIES,
INC.

Read installation instructions rst before installing. Check parts to ensure that no damage has occured

during transit, the bolt guides are aligned with the axis of the pipe, and no parts are missing.

™

Alpha Coupling

When properly installed, ALPHA can be used at working pressures
equal to the lesser of 350 psi, pipe rating, or value listed below:

PIPE

MATERIAL

Ductile Iron 4-12" 350 psi

Cast Iron 4-12" 350 psi

PVC, IPS size 4-12" 350 psi

PVC, DI size 4-12" 350 psi

C909 4-6" 235 psi

C909 8-12" 150 psi

HDPE: SDR 9, 11, 13.5 & 17* 4-12" rating of pipe

* For SDRs greater than 17, pipe stiffeners are required.

For other SDR's and pipe materials, contact Romac.

SIZE

ALPHA RANGES

STANDARD ALPHA:

ALPHA XL:

SIZE

8” 8.60 - 9.10 9.05 - 9.40

10” 10.75 - 11.20 11.10 - 11.45

12" 12.75 - 13.30 13.20 - 13.60

For DI sized through Oversize Cast pipe diameters.

STANDARD ALPHA ALPHA XL

For IPS through DI sized pipe diameters.

WORKING

PRESSURE

Two-Bolt Wide Range
Restraint Coupling for 8" - 12" Pipe Sizes

There should be a minimum of 4" of

pipe insertion per coupling end. Conrm

proper alignment between pipes and
maintain the recommended minimum gap
between pipe ends (1/4” - 1/2”).

For installation on HDPE, pipe ends
should be butted against each other.

Step 5 • Set the desired pipe deection angle.

4º MAXIMUM

EACH END

Std. Alpha & Alpha XL

Maximum deection:

4º on each end

Note: Do not deect pipe joint after installation.

Alpha XL installations at the

2º MAXIMUM

EACH END

top of the range

Maximum deection:

2º on each end

Step 1 • Measure pipe diameter and verify with the

ranges listed above to ensure the correct size coupling
has been selected.

Step 2 • Remove any scale or debris that could

interfere with gripper engagement of the pipe. Clean the
pipe surfaces wherever the gaskets will come in contact
with the pipe, and check to see that the pipe surface is
smooth (no dents, projections, gouges, etc.) where the
gaskets seal against the pipe.

Step 3 • Lubricate the gasket and pipe surface with a

suitable gasket lubricant.

Step 4 • With the bolts in the extended position,

place the coupling onto one pipe end. Bring the other
pipe into position and slide coupling over the gap.

Document #'02-9-0008 04/19/2019

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

Step 6 • With the coupling properly located, tighten

the nuts to 45 ft-lbs using a torque wrench.

NOTE: Do not use an impact wrench. Do not overtorque,
or retighten. If a good seal is not achieved at 45 ft-lbs of
torque, refer to the Common Installation Problem listed

on side two.

45 ft-lbs.

DO NOT OVERTORQUE

Step 7 • Conrm proper installation by pressurizing

the line and checking for leaks.

Step 8 • Backll and compact carefully around pipe

and coupling.

ROMAC
INDUSTRIES,
INC.

INSTALLATION INSTRUCTIONS

™

Alpha Coupling

Two-Bolt Wide Range
Restraint Coupling for 8"- 12" Pipe Sizes

PRECAUTIONS

1. Check diameter of pipe to make sure the correct sized coupling has been selected.

2. Conrm the pipe is round. The coupling may not t or function on pipe that is too far out of round.

3. Clean pipe to remove dirt and corrosion from pipe surface. Use appropriate scale removal tools where appropriate
to assure all scale and debris is properly removed.

4. 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.

5. Make sure no foreign materials lodge between gasket and pipe, between the grippers or in the end ring mechanism.

6. Avoid loose tting wrenches, or wrenches too short to achieve proper torque.

7. Keep threads free of foreign material to allow proper tightening.

8. For cold weather conditions (below 40º F), performance can be improved by warming up the coupling and gasket.

9. Verify that the grippers are in contact with the pipe surface.

10. Do not strike or pry on the coupling with hammers, shovels or other equipment.

11. When reinstalling, prior to pressure application, be sure to inspect all parts for damage and apply additional lubricant
to the fasteners.

12. If it's necessary to remove Alpha, loosen the bolt and tap the end ring bolt receiver open. Tapping the hooks into
their notches may also be required.

13. Do not reuse coupling after pressure application.

14. It is common for the bolt receivers to meet on installations at the bottom of the range.

15. Directional drilling requires special consideration prior to installation. Contact Romac Engineering
for any directional drilling applications.

16. Romac mechanical restraint products are designed and tested to provide axial load restraint as specied.
System design must be such that the restraint is only exposed to this type of loading. Special consideration may be

required for above ground installations where the alignment and support benets of earth are not present.

PRECAUTIONS FOR HDPE PIPE

1. Pipe ends should be butted against each other.

2.

For SDRs greater than 17, pipe stiffeners are required.

3. Alpha working pressure not to exceed pressure rating of pipe.

4. Operating temperatures are limited to 85º F maximum and 32º F minimum.

5. Recommended for buried applications only. For above ground use, contact Romac Engineering.

COMMON INSTALLATION PROBLEMS

1. Pipe not inserted into the coupling far enough.

2. Too much pipe deection.

3. Damage to the outer pipe surface (dents, projections, gouges, etc.)

4. Bolts not tightened to proper torque.

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