Cherne® I-Series® Muni-Ball®

Cherne® I-Series Muni Ball Plugs are designed to meet the needs of U.S. and international markets in terms of size and expansion range. Cherne Industries is a global leader in pipe plugs and testing.

UPC: 675115311121
Part #: 311128

Available in 22 variations

Key Features & Benefits

Superior expansion range
Full body cording for added durability
Small deflated diameters
All plugs through 24-60 in. easily fit through a 24 in. manhole frame
48-72 in. & 54-96 in. plugs fit through a 36 in. opening
Aluminum end plates minimize rust
3/4 in. eyebolts on 15-32 in. and larger plugs
Pressure relief valve on 15-32 in. and larger protects plugs from over inflation
Flexible bypass hoses

Specifications

Maximum Back Pressure:	15 psi (1 bar)
Inflation Pressure:	45 psi (3 bar)
Product Type:	I-Series Muni-Ball
Deflated Length:	25 in. (635 mm)
Bypass Diameter:	1 in. M
Color:	Black
Deflated Diameter:	5.41 in.
Inflation Thread:	1/8 in.

Nominal Size:	6 in. - 12 in. (150 - 300 mm)
Chain Eye Bolts:	0.8 in. Bracket Tag
Usage Range:	5.5 in. - 12.25 in. (140 - 310 mm)
Plug Type:	Bypass
Weight:	9.5 lb.
Nominal Min:	6
Nominal Max:	12
Brand:	Cherne

More Specifications

Technical Resources (3)

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Frequently Asked Questions

What is the shelf life for Cherne pneumatic plugs?

Cherne offers a 2 year warranty on all pneumatic plugs from date of manufacture, (plugs are post-dated by six months to allow for shelf time). If kept in controlled conditions (not exposed to sunlight and kept at temperatures between 0-125 degrees F) the pneumatic plugs remain in good condition for a longer period of time. Plugs should always be inspected for visual damage prior to every use.

What type of rubber is a Cherne pneumatic plugs made from?

All of Cherne’s pneumatic pipe plugs are made from natural rubber. The only exception is our yellow pillow plugs which are made from a polyurethane impregnated fabric.

How often should a pneumatic plug pressure be checked?

Inflation pressure should be checked a minimum of once every 4 hours while a pneumatic plug is in use.