CHERNE Test-Ball - Page 19

19
DETERMINE THE TYPE OF PNEUMATIC PLUG REQUIRED. Cherne offers a
wide variety of plug types including:
a. Blocking type pneumatic plugs (Test-Ball® plugs).
b. Plugs for sealing wyes (Long Test-Ball® plugs and MS2® Long Test-Ball®
plugs).
c. Plugs for sealing test tees (Clean-Seal® plugs).
d. Plugs with a bypass through the plug (Muni-Ball® plugs).
e. Plugs with maximum bypass size for gravity ow bypass applications (Big-
Mouth® Flow Through plugs).
f. Plugs for remote placement (REMO® plugs).
g. Plugs (large diameter) capable of tting through small diameter openings
(Urethane Test-Ball® and Muni-Ball® Plugs).
h. Plugs for air testing sewer lines (AIR-LOC® plugs).
NOTE: Refer to Section 13 of this manual to determine what method will be
used to remove back pressure before plug deation. Then select the necessary
plug(s) and related equipment. Many sizes of plugs are available in several
product congurations optimized for specic applications. Consult your catalog,
Cherne dealer or call Cherne toll free at 1-800-843-7584 for recommendations.
WARNING NEVER ATTEMPT TO USE A PLUG PRODUCT IN
A PIPE SMALLER OR LARGER THAN THE RECOMMENDED SEALING
SIZE USAGE RANGE! Media leakage, product failure and/or plug
dislodgement may result. PLUG FAILURE OR DISLODGEMENT MAY
RESULT IN DEATH, SERIOUS BODILY INJURY AND/OR PROPERTY
DAMAGE!
CAUTION CHECK THE PRESSURE RATING OF THE PIPE TO
BE SEALED. The pipe’s internal pressure rating must exceed the ination
pressure for the pneumatic plug selected for use. A plug body may exert a
force on the pipe wall nearly equal to the ination pressure. Damage to the
pipe, such as breakage, may occur if the pipe has a lower pressure rating
than the plug’s ination pressure. Special caution should be used with
brittle pipe such as clay or non-reinforced concrete if a plug is used before
the pipe is properly backlled.