No-pressure pipe lines can be tested by rubber inflated type pipe test
plugs.
These plugs are described as pipe plug and pipe test plugs which are
used
together. Designed for applications for pressure testing and blocking of
residential DWV systems to repair maintenance and installation of
municipal
infrastructure including storm and sanitary sewer piping systems. Also
designed
for fast and reliable sealing or blocked of canals, joints, and inlets.