Checking for Wear

Pumping performance as well as safe operation of the pumping system may be affected by worn couplings or gaskets, which may let air into the line or allow grout to escape.

Couplings typically wear on the surface that comes into contact with the pipe; and gaskets need to be cleaned if they have concrete remaining in the cavity. The gasket should be replaced if the center lip is worn out. Valves should be routinely inspected for wear and proper settings.

The most accurate way to inspect for worn pipeline is with a gauge specifically designed to measure the thickness of steel pipe. In addition, the pipe ends must be inspected for wear, cleanliness and to make sure they are compatible with other pipe and couplings to be used on the job.

American-sized and European-sized raised ends are not compatible. Compatibility must also be ensured if pipe from different manufacturers are used together, since pipe joints can pose a serious hazard if the ends and coupling do not match.

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