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CHERNE Big Mouth Plugs, Original Size

Cherne original Big-Mouth plugs are designed for bypass pumping or gravity bypassing operations.

Filter
StyleModelNominal Size(M)NPT Size (In.)RangeMax. Back PressureRequired Inflation PressureDeflated DiameterDeflated LengthPrice
A
269008
8" to 10"47.25" To 10.25"11 psi/25 ft.35 psi6.94"14.88"£640.05
A
269028
12" to 15"610.62" To 15.25"11 psi/25 ft.30 psi10.25"17.88"£1,277.15

Working Mechanism

  • Pneumatic plugs can be positioned into the pipe at a distance equal to the pipe diameter.
  • Connect one end of the inflation hose to the plug inflation fitting.
  • Brace / block the plug.
  • Inflate pressure to the plug through the inflation hose and let it stabilise.
  • Proceed with testing of pipe or other uses of the plug.
  • Release plug pressure from outside the danger zone until the plug is completely deflated and remove the bracing / blocking system.

Features

  • Cherne original Big-Mouth plugs have an interchangeable, large male NPT threaded bypass flange.
  • They are equipped with a removable, 3/8-inch eye bolt to lower and lift the plugs using a poly-lift line.
  • These units have a removable tank valve for easy replacement with an optional quick disconnect.

Standards and Approvals

  • ISO 9001
  • OSHA

Frequently Asked Questions

What is a bypass flange made of?

It features lightweight aluminium construction to provide improved flexibility and durability.

What is the shelf life of Cherne pneumatic plugs?

Cherne offers a 2-year warranty on all pneumatic plugs (from the date of manufacture) when kept under controlled conditions and at temperatures between 0 and 125 degrees Fahrenheit.

How often should the pressure of the plugs be monitored?

The inflation pressure should be checked and maintained a minimum of once per 4 hours while in use.

What will happen during over-inflation or under-inflation of the plugs?

  • Over-inflation: It may cause the plug to dislodge and rupture at extreme velocity.
  • Under-inflation: It may cause the media and the plug restrained to dislodge from the pipe.

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