Hydraulic In-Line Weld Test Isolation Plugs

Sergeant McPherson’s range of aluminum In-line Weld Test Tools provide a safe, fast and efficient means of creating a hot work vapour barrier and carrying out localised pressure testing of pipe work butt welds and joints.

In-line test tools are supplied for the purpose of providing a verified barrier against the migration of harmful or flammable vapours at ambient pressure and for the purpose of conducting localised hydro leak and strength tests.

The hydro test envelope is created by inserting the in-line weld test tool into the pipe work and locating the tool across the butt weld or joint to be tested.

Localized pressure testing is a means of verifying the integrity of a welded, formed or flanged joint which has been made on a piping system. Typically these are made during a repair or modification on a process piping system. The test is typically undertaken using water as the test medium but can be undertaken using inert gas, if required. The test undertaken is normally a strength test of the joint at 1.5 times design pressure but the tool can also be used as a leak testing means typically undertaken at 1.1 times design pressure.