PVC & CPVC SCHEDULE 80
GROOVED COUPLING ADAPTER
INSTALLATION INSTRUCTIONS
Spears
Adapters were designed
using the Victaulic style 75
and 77 fl exible coupling.
Other couplings of similar
fl exible design may
used. CAUTION: Use of
rigid style couplings may
damage
coupling adapter. Consult
the coupling manufacturer
for proper selection.
READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGINNING
INSTALLATION
The following procedures are recommended for proper assembly of the
Grooved Coupling Adapter.
INSTALLATION PROCEDURES
STEP 1
STEP 1
STEP 2
CAUTION: Certain lubricants can contain a petroleum base or other
chemicals which may cause damage to the gasket and adapter. It is
the installers responsibility to verify suitability for use of the selected
lubricant with the manufacturer.
1
STEP 3
GCA-3A-0912
IRON PIPE
Grooved Coupling
®
be
the
grooved
STEP 4
P 4
GROOVE
GASKET
ADAPTER
GROOVE
Gasket X-section
Groove
Groove
Iron Pipe Wall
Adapter Wall
CORRECT GASKET POSITION
2
STEP 5
WARNING: You must
tighten bolts alternately
and evenly to achieve
metal-to-metal contact
of the housing bolt
pads.
Inspect the joints before and after pressure testing.
STEP 6
Look for gaps between the bolt pads and for housing
keys that are not inside the grooves. Insure that pipe alignment
does not place undue stress on the grooved coupling adapters.
Gasket
Clamp Housing
IRON PIPE
ADAPTER
PLASTIC PIPE
As an added precaution to enhance the structural design
STEP 7
of the system, it is suggested that a hanger or support
be located at or near the grooved coupling adapter joint. This can be on
either side of the coupling.
Consult coupling manufacturer for proper hanger and support requirements.
SPEARS
MANUFACTURING
®
COMPANY
15853 Olden Street, Sylmar, CA
91342
PO Box 9203, Sylmar, CA 91392
(818) 364-1611
www.spearsmfg.com
© Copyright 2021 Spears
®
Manufacturing Company. All Rights Reserved.
Printed in the United States of America 10/21.
GCA-3A-0912