Correct sizing is essential
The bladder must match the stated internal pipe diameter. An undersized tool may not seal; an oversized bladder can lodge or place excessive stress on the pipe.
- Pipe diameter range
- Maximum inlet pressure
- Hose connection
- Retrieval cord or control method
Pressure can find weak points
Water may return through another fixture, leak from a weak joint or force contamination into the work area. Confirm where pressure and displaced water can go before opening the supply.
- Other connected fixtures
- Condition of traps and joints
- Backflow route
- Fast shutoff access
A safer decision process
- 1
Identify the pipe and connected fixtures
- 2
Select the exact size
- 3
Insert fully before opening water
- 4
Increase flow only as directed
- 5
Shut off and release pressure before retrieval
Important safety point
Do not use a bladder where the pipe condition, route or pressure relief is unknown. Hidden leaks can cause serious water damage.