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CHERNE Big Mouth Plugs, Original Size
Cherne original Big-Mouth plugs are designed for bypass pumping or gravity bypassing operations.
A| Style | Model | Nominal Size | (M)NPT Size (In.) | Range | Max. Back Pressure | Required Inflation Pressure | Deflated Diameter | Deflated Length | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|
| A | 269008 | 8" to 10" | 4 | 7.25" To 10.25" | 11 psi/25 ft. | 35 psi | 6.94" | 14.88" | €762.02 | |
| A | 269028 | 12" to 15" | 6 | 10.62" To 15.25" | 11 psi/25 ft. | 30 psi | 10.25" | 17.88" | €1,520.53 |
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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