Bailey Products are a leading manufacturer of testing/stopping plugs. Plugs are available in two forms, centre lock and rim fastening. Centre locks can be produced in steel, aluminium or nylon to suit the application, rim fasts are only available in steel.

This is a guide to the maximum back pressure for the different types and sizes of test plugs. These pressures will vary upon cleanliness and condition of pipe bore and ambient temperature.

1⁄2″ (12.5mm) to (30mm)30 psi
11⁄2″ (40mm) to (300mm)7 psi
13″ (325mm) to (1200mm)5 psi
Over 40″ (1200mm)3 psi


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