Cherne® High Pressure-Plugs’ optimized design using steel, aramid and natural rubber ensure longevity through its robust construction, when high back pressures exist. Cherne I-Series Plugs have a smaller deflated diameter and shorter overall length that make it easier to insert through tight man-hole openings. All I-Series Plugs feature our Patented Field-Repairable Ruptured Disc Technology, which eliminates the risk and danger of over inflation due to faulty gauges or user error.
Sewer Air Test Plugs
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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.