Stack test plugs are specialized equipment for temporarily sealing parts of a drain, waste, and vent (DWV) plumbing system during testing. These plugs fit into a test tee and are designed to prevent water flow while inspecting the plumbing system.
By inflating the plug's bladder, a watertight seal is formed, allowing plumbers to inject water into vertical stacks to detect leaks. After the test, the plug is deflated and water is safely discharged through the system. Stack test plugs provide accurate and consistent results in residential as well as commercial applications.

Designed for stack testing of drain, waste, and vent plumbing systems, 130-1 Stack Test Style Rubber Test plugs thread into a standard test tee. The bladder is inflated and then water is introduced into the pipe. Upon test completion, deflate the test tee plug bladder; water travels down the pipe, eliminating test water backsplash.
- Stack testing equipment works in both plastic and cast-iron test tees
- Natural rubber body provides a leak-free seal
- High-impact ABS threads for maximum durability
- Removable/replaceable tire inflation valve fitting
***Pipeline Maximum Allowable Back Pressure

Inflated

Deflated
| Image | Nominal Size | Dia. Deflated | Infl. Press. Required | Press. Pipeline Max | Port, Inflation | Length Deflated | By-Pass | Shipping Wt. | Item Number | Price | Qty | Order or Compare |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
6" (150mm) | 6.63" (168mm) | 25 psi (1.7 bar) | 13 psi (0.9 bar)/30 ft (9.1 m) | 1/4" Schrader Tire Valve | 11" (280mm) | None | 4 Lbs (1.81 Kg) | 130-1060- |
$156.00
|
||
|
4" (102mm) | 4.5" (114mm) | 35 psi (2.4 bar) | 13 psi (0.9 bar)/30 ft (9.1 m) | 1/4" Schrader Tire Valve | 8.5" (215mm) | None | 2 Lbs (0.91 Kg) | 130-1040- |
$62.10
|
||
|
3" (76mm) | 3.5" (89mm) | 35 psi (2.4 bar) | 13 psi (0.9 bar)/30 ft (9.1 m) | 1/4" Schrader Tire Valve | 7.38" (188mm) | None | 1 Lb (0.45 Kg) | 130-1030- |
$53.60
|
||
|
2" (50mm) | 2.38" (60mm) | 35 psi (2.4 bar) | 13 psi (0.9 bar)/30 ft (9.1 m) | 1/8" Schrader Tire Valve | 5.81" (150mm) | None | 0.5 Lb (0.23 Kg) | 130-1020- |
$49.50
|
||
|
1.5" (40mm) | 1.5" (38mm) | 30 psi (2.1 bar) | 13 psi (0.9 bar)/30 ft (9.1 m) | 1/8" Schrader Tire Valve | 4.75" (121mm) | None | 0.5 Lb (0.23 Kg) | 130-1015- |
$45.30
|









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