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< Bypass Plugs

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: 675115316423
Part #: 316428




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

Deflated Length: 53.5 in. (1359 mm)
Bypass Diameter: 6 in. M
Maximum Back Pressure: 10 psi
Deflated Diameter: 19.5 in. (495.3 mm)
Inflation Thread: 1/4 in. & 1/2 in.
Inflation Pressure: 25 psi (1,72 bar)
Chain Eye Bolts: 1/2 in. (2)
Nominal Size: 20 in. - 40 in. (500 - 1000 mm)
Usage Range: 20 in. - 40 in. (508 - 1000 mm)
Weight: 128 LB
Nominal Min: 20
Nominal Max: 40
Brand: Cherne

More Specifications

Technical Resources (3)

  • FAQ
  • Safety & Instruction Manual
  • Sell Sheet

More Downloads

Available in 22 variations

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.

Related Resources

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