Description
Overview:
The Steel Drain Test Plug is a robust mechanical plug for temporarily sealing and pressure testing drainage pipes. Built from durable steel, it suits nominal 3" (75 mm) pipework and features a 1/2" (12.7 mm) threaded outlet for attaching a gauge or hose during testing. The adjustable design fits internal pipe diameters from 73 mm to 92 mm, creating a secure seal to help identify leaks and confirm system integrity. With a maximum allowable back pressure of 20 psi (1.38 bar / 138 kPa), it is suitable for low-pressure commissioning and maintenance tasks. Compact at 80.5 mm in length, with a minimum insertion depth of 34 mm, it is practical for use in tight spaces across building, plumbing, groundworks, and facilities maintenance.
Key Features:
- Steel construction for long service life in site and workshop conditions
- Adjustable expansion to seal pipe IDs from 73 mm to 92 mm
- Nominal 3" (75 mm) size for common soil and drain runs
- 1/2" (12.7 mm) threaded outlet for easy connection to gauges and hoses
- Rated to 20 psi (1.38 bar / 138 kPa) maximum allowable back pressure
- Minimum insertion depth of 34 mm for reliable engagement and sealing
- Compact 80.5 mm overall length for access in confined areas
- Positive, secure seal to support effective leak checks and system isolation
- Easy to fit and remove, helping speed up testing and maintenance work
- Suitable for most common drainage pipe materials when the internal diameter is within range
Typical Applications:
Commissioning and leak testing of soil and waste lines, gullies, and site drainage runs. Temporary isolation of sections during repairs, cleaning, or camera surveys. Useful in residential and commercial plumbing, groundworks, civil engineering, and facilities maintenance where a quick, reliable seal is needed for low-pressure testing up to 20 psi (1.38 bar / 138 kPa).
Also known as:
Drain bung, test bung, drain stopper, pipe blanking plug, expanding pipe bung, line blanking bung, pipe blocking bung, drain line blocker, sealing bung for drains.
Product Specifications
| L&S Part No. | 200 497 |
|---|---|
| Unit of Sale | 1 |
| Size | 3" (75mm) |
| Key Features | - Steel construction for durability in site conditions - Adjustable to fit pipe IDs from 73 mm to 92 mm - 1/2" threaded outlet for gauge or hose attachment - Rated to 20 psi maximum back pressure - Compact 80.5 mm length for confined spaces |
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