Air-Inflatable Plugs
Conform to wide and out-of-round pipes with these inflatable plugs. Also known as pneumatic plugs, they're designed for temporary seals since they can lose pressure over time. They’re better for lower-pressure applications than water-inflatable plugs. Inflate them with a hand pump; an air compressor may overinflate the plug and cause damage.
Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
Plugs with a chain or eyebolt can be tethered through either so they don't get lost or stuck in your pipes during installation. For easy removal once testing is complete, pull on your tether.
Plugs with a natural rubber sleeve are protected from debris and sharp objects in your pipe, as well as rough pipe walls. This extends the plug’s life and ensures the seal stays intact.
Plugs with a canvas sleeve keep gas, odor, and debris from leaking out through the seal. This makes them good for high-temperature applications, such as in pipe that’s being welded. The sleeve also protects against scrapes from rough pipe walls. Use the loops on the outside to route hose through your pipe to vent while welding, or to connect lines for pulling these plugs through your pipe.
Plugs with a ribbed texture have better traction against pipe walls than plugs with a smooth texture. When sealing oily or polished walls, they’ll resist slipping.
Plugs with a pressure-relief valve release excess pressure to reduce the risk of overinflating and rupturing.
For technical drawings and 3-D models, click on a part number.
For Pipe | Deflated | Max. Back Pressure | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Chain Lg. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Temp. Range, °F | Seal | Chain/Ring | Body Texture | Each | ||
| A | 3/4 to 1 1/4 | 0.75"-1.30" | 3/4" | 3 3/4" | 12" | 17 | 40 | 45 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 0000000 | 000000 |
| B | 1 1/4 to 1 1/2 | 1.17"-1.75" | 1 1/8" | 5 1/2" | 12" | 13 | 30 | 40 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 000000 | 00000 |
| B | 1 1/4 to 2 | 1.25"-2.10" | 1 1/4" | 5 9/16" | 12" | 17 | 40 | 40 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 0000000 | 00000 |
| B | 2 to 3 | 1.90"-3.10" | 1 3/4" | 5 9/16" | 12" | 17 | 40 | 35 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 0000000 | 00000 |
| B | 4 to 6 | 3.40"-6.25" | 3 1/4" | 9 1/2" | 12" | 17 | 40 | 30 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 0000000 | 000000 |
| C | 2 | 1.90"-2.25" | 1 3/4" | 2 13/16" | 12" | 13 | 30 | 40 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 000000 | 00000 |
| C | 2 1/2 | 2.34"-2.75" | 2 5/16" | 4 1/2" | 12" | 13 | 30 | 35 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 000000 | 00000 |
| C | 3 | 2.77"-3.25" | 2 5/8" | 5 1/4" | 12" | 13 | 30 | 35 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 000000 | 00000 |
| C | 3 to 4 | 2.80"-4.25" | 2 5/8" | 5 3/16" | 12" | 17 | 40 | 40 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 0000000 | 00000 |
| C | 4 | 3.41"-4.25" | 3 1/4" | 6 1/2" | 12" | 13 | 30 | 30 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 000000 | 00000 |
| C | 5 | 4.60"-5.25" | 4 1/2" | 7 3/4" | 12" | 13 | 30 | 30 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 0000000 | 00000 |
| C | 6 | 5.44"-6.25" | 5 1/4" | 9" | 12" | 13 | 30 | 30 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | 000000 | 000000 |
For Pipe | Deflated | Max. Back Pressure | Material | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Temp. Range, °F | Seal | Eyebolt | Body Texture | Features | Each | |
| 4 to 6 | 3.75"-6.25" | 3 1/2" | 9 13/16" | 17 | 40 | 30 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | __ | 0000000 | 0000000 |
| 4 to 8 | 3.95"-8.25" | 3 1/2" | 23" | 15 | 35 | 45 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Smooth | __ | 0000000 | 000000 |
| 6 to 8 | 5.25"-8.25" | 5" | 14" | 17 | 40 | 30 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | __ | 0000000 | 000000 |
| 6 to 12 | 5.50"-12.25" | 5 1/4" | 25" | 15 | 35 | 45 | 0° to 125° | Natural Rubber | Zinc-Plated Steel | Smooth | __ | 0000000 | 000000 |
| 8 | 7.00"-8.25" | 6 3/4" | 10 1/4" | 17 | 40 | 25 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | __ | 000000 | 000000 |
| 8 to 12 | 7.00"-12.25" | 6 3/4" | 16" | 11 | 25 | 20 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | __ | 0000000 | 000000 |
| 8 to 12 | 7.50"-12.25" | 6 3/4" | 19 7/8" | 15 | 35 | 45 | 0° to 125° | Natural Rubber | Zinc-Plated Steel | Smooth | __ | 0000000 | 000000 |
| 8 to 16 | 7.50"-16.25" | 7 1/4" | 28" | 15 | 35 | 45 | 0° to 125° | Natural Rubber | Zinc-Plated Steel | Smooth | __ | 0000000 | 000000 |
| 10 | 9.00"-10.25" | 8 3/4" | 11 3/4" | 17 | 40 | 25 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | __ | 000000 | 000000 |
| 12 | 10.50"-12.25" | 10 1/4" | 13 3/4" | 17 | 40 | 25 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | __ | 000000 | 000000 |
| 12 to 18 | 10.75"-18.25" | 10 3/4" | 25" | 15 | 35 | 45 | 0° to 125° | Natural Rubber | Zinc-Plated Steel | Smooth | __ | 0000000 | 000000 |
| 12 to 24 | 11.00"-24.25" | 10 3/4" | 37" | 15 | 35 | 45 | 0° to 125° | Natural Rubber | Zinc-Plated Steel | Smooth | __ | 0000000 | 00000000 |
| 16 | 14.00"-16.25" | 13 3/4" | 19 3/4" | 13 | 30 | 25 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | Ribbed | __ | 0000000 | 000000 |
| 24 to 48 | 20.50"-50.00" | 19" | 84 1/2" | 10 | 23 | 25 | 0° to 125° | Natural Rubber | Zinc-Plated Steel | Smooth | Pressure-Relief Valve | 0000000 | 00000000 |
Deflated | Max. Back Pressure | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Temp. Range, °F | Seal | Eyebolt | Body Texture | Features |  | Each | |
| 11.00"-18.50" | 10 3/4" | 28" | 13 | 30 | 25 | 35° to 120° | Natural Rubber | Nickel-Plated Steel | Ribbed | __ | 12 to 18 | 00000000 | 000000000 |
| 11.00"-18.50" | 10 3/4" | 28" | 13 | 30 | 25 | 35° to 120° | Natural Rubber | Nickel-Plated Steel | Ribbed | Pressure-Relief Valve | 12 to 18 | 00000000 | 00000000 |
| 11.00"-24.50" | 10 3/4" | 37" | 13 | 30 | 30 | 35° to 120° | Natural Rubber | Nickel-Plated Steel | Ribbed | __ | 12 to 24 | 00000000 | 00000000 |
| 11.00"-24.50" | 10 3/4" | 37" | 13 | 30 | 30 | 35° to 120° | Natural Rubber | Nickel-Plated Steel | Ribbed | Pressure-Relief Valve | 12 to 24 | 00000000 | 00000000 |
| 15.00"-30.00" | 14 1/4" | 39 1/2" | 19 | 19 | 45 | -20° to 160° | Neoprene Rubber | Zinc-Plated Steel | Ribbed | __ | 16 to 30 | 00000000 | 00000000 |
| 20.00"-40.00" | 19 1/8" | 45 1/4" | 14 | 14 | 45 | -20° to 160° | Neoprene Rubber | Zinc-Plated Steel | Ribbed | __ | 20 to 40 | 00000000 | 00000000 |
For Pipe | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Deflated Ht. | Required Inflation Pressure, psi | Max. Temp., °F | Seal Material | Body Texture | Features | Each | |
| 2 | 1.96"-2.16" | 5 1/2" | 15 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 000000 |
| 3 | 2.95"-3.30" | 5 1/2" | 15 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 00000 |
| 4 | 3.93"-4.40" | 6" | 15 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 00000 |
| 5 | 4.92"-5.43" | 7 1/2" | 15 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 00000 |
| 6 | 5.90"-6.61" | 9" | 15 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 00000 |
| 8 | 7.87"-8.81" | 11" | 14 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 00000 |
| 10 | 9.84"-10.86" | 13 1/2" | 10 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 00000 |
| 12 | 11.81"-12.76" | 16" | 8 | 210° | Neoprene | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 00000 |
| 14 | 13.78"-14.48" | 20" | 7 | 210° | Natural Rubber | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 000000 |
| 16 | 15.74"-16.41" | 24" | 6.5 | 210° | Natural Rubber | Smooth | Inflation Hose, Pressure-Relief Valve, Routing Loops | 00000000 | 000000 |
Air- and Water-Inflatable Plugs
Penetrate tight pipe junctures with the most flexible expansion plugs we offer. To inflate with air, use a hand pump (sold separately). Whether you fill with air or water, a pressure relief valve will prevent over expanding. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For Pipe | Deflated | Max. Back Pressure | Water Inlet | Material | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Thread Type | Hose Size | Gender | Temp. Range, °F | Seal | Fitting | Each | |
| 1 1/2 to 2 | 1.50"-2.00" | 1 3/16" | 7 5/8" | 13 | 30 | 50 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 0000000 | 000000 |
| 3 to 4 | 2.75"-4.25" | 2 11/16" | 9" | 13 | 30 | 50 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 0000000 | 00000 |
| 4 to 6 | 3.75"-6.25" | 3 1/2" | 11" | 13 | 30 | 30 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 0000000 | 00000 |
| 5 to 8 | 4.75"-8.25" | 4 1/2" | 14 1/2" | 13 | 30 | 35 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 0000000 | 000000 |
| 10 to 12 | 9.75"-12.25" | 6 7/8" | 20" | 11 | 25 | 30 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 0000000 | 000000 |
| 14 to 16 | 13.75"-16.25" | 8 1/4" | 22" | 11 | 25 | 15 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 0000000 | 000000 |
Air- and Water-Inflatable Plugs for Wye-Joints
These extra-long plugs allow you to seal off two pipes at the same time. They have two separate inflation chambers to release back pressure gradually and prevent splash back as water clears the drain line. To inflate with air, use a hand pump (sold separately). Whether you fill with air or water, a pressure relief valve will prevent over expanding. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For Pipe | Deflated | Max. Back Pressure | Water Inlet | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Thread Type | Hose Size | Gender | Temp. Range, °F | Seal | Fitting | Includes | Each | |
| 2 to 3 | 2.00"-3.10" | 1 3/4" | 19 1/2" | 13 | 30 | 60 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 4-ft. Lg. Air Hose | 0000000 | 0000000 |
| 3 to 4 | 2.75"-4.25" | 2 1/2" | 23 1/2" | 13 | 30 | 60 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 4-ft. Lg. Air Hose | 0000000 | 000000 |
| 4 to 6 | 4.00"-6.25" | 2 5/8" | 30" | 13 | 30 | 50 | GHT | 3/4 | Female | 35° to 95° | Natural Rubber | Brass | 4-ft. Lg. Air Hose | 0000000 | 000000 |
Air-Inflatable Plugs for Tee Connections
Often used for plumbing tests, these plugs thread into tees and inflate to block flow across the pipe. After your test is complete, deflate the bladder to drain the fluid from your line. Leave the plug installed while the draining the pipe—the threads create a leak-free seal, so no water will splash out. Also known as pneumatic plugs, they can lose pressure over time, so they’re designed for temporary seals. To inflate, use a hand pump (not included) since an air compressor might overinflate and burst them.
Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For Pipe | Deflated | Max. Back Pressure | Material | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Temp. Range, °F | Seal | Thread | Each | |
NPT Male | |||||||||||
| 1 1/2 | 1.61" | 1 1/2" | 4 3/4" | 13 | 30 | 30 | 0° to 125° | Natural Rubber | ABS Plastic | 0000000 | 000000 |
| 2 | 2.067" | 2 3/8" | 5 13/16" | 13 | 30 | 35 | 0° to 125° | Natural Rubber | ABS Plastic | 0000000 | 00000 |
| 3 | 3.068" | 3 1/2" | 7 3/8" | 13 | 30 | 35 | 0° to 125° | Natural Rubber | ABS Plastic | 0000000 | 00000 |
| 4 | 4.026" | 4 1/2" | 8 1/2" | 13 | 30 | 35 | 0° to 125° | Natural Rubber | ABS Plastic | 0000000 | 00000 |
| 6 | 6.065" | 6 5/8" | 11" | 13 | 30 | 25 | 0° to 125° | Natural Rubber | ABS Plastic | 0000000 | 000000 |
Remote-Access Air-Inflatable Plugs
Plug underground sewage lines, water supply lines, and other pipe that’s hard to reach. These plugs attach to a 6-ft. extension pole with an adapter (both sold separately) so you can place them in confined spaces from a distance. Before placing them in your line, connect them to your air compressor with a hose to inflate them remotely. Also known as pneumatic plugs, they’ll seal wide and out-of-round pipe. Since they can lose pressure over time, they’re intended for temporary seals. Use them in lower-pressure applications than water-inflatable plugs.
Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
Adapters thread into a connector on the end of the plug. When installing the plug, adjust the adapter’s angle using the connector’s pull pin.
Poles snap into the adapter. For a longer reach, connect multiple poles together.
For Pipe | Deflated | Max. Back Pressure | Connection | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Pipe Size | Thread Type | Gender | Temp. Range, °F | Seal | Eyebolt | Features | Each | |
| 6 to 10 | 6"-10.58" | 5" | 17" | 13 | 30 | 30 | 1 1/2 | NPSM | Female | 35° to 125° | Natural Rubber | Zinc-Plated Steel | Adjustable-Angle Connector | 0000000 | 0000000 |
| 8 to 12 | 8"-12.64" | 6" | 19" | 13 | 30 | 25 | 1 1/2 | NPSM | Female | 35° to 125° | Natural Rubber | Zinc-Plated Steel | Adjustable-Angle Connector | 0000000 | 000000 |
Thread | |||||
|---|---|---|---|---|---|
| Pipe Size | Type | Gender | Material | Each | |
| 1 1/2 | NPSM | Male | Aluminum | 0000000 | 0000000 |
| Dia. | Lg., ft. | Material | Each | |
| 1 1/2" | 6 | Aluminum | 0000000 | 0000000 |
Air-Inflatable Plugs with Bypass
Conform to wide and out-of-round pipes with these inflatable plugs. Also known as pneumatic plugs, they're designed for temporary seals since they can lose pressure over time. Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve pressure while testing.
Inflate with a hand pump (sold separately); an air compressor may overinflate the plug and cause damage. Tether the plugs using either the eyebolt or chain/ring so they don't get lost or stuck in your pipes during installation. Pull on the tether for quick and easy removal once testing is complete.
Maximum air back pressure is the amount of pressure a plug can withstand without moving.
Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For Pipe | Deflated | Max. Back Pressure | Bypass | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Chain Lg., ft. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Pipe Size | Thread Type | Gender | Temp. Range, °F | Seal | Chain/Ring | Each | |
| 1 1/2 | 1.49"-1.88" | 1 3/8" | 3 13/16" | 1 | 22 | 50 | 40 | 1/4 | NPT | Male | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 0000000 |
| 2 | 1.88"-2.25" | 1 3/4" | 6" | 1 | 22 | 50 | 40 | 1/8 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 000000 |
| 3 | 2.62"-3.25" | 2 1/2" | 8" | 1 | 22 | 50 | 40 | 1/2 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 000000 |
For Pipe | Deflated | Max. Back Pressure | Bypass | Material | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Pipe Size | Thread Type | Gender | Temp. Range, °F | Seal | Eyebolt | Each | |
| 4 | 3.25"-4.25" | 3 1/8" | 8" | 22 | 50 | 40 | 3/4 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 0000000 |
| 6 | 4.50"-6.25" | 4 1/2" | 7" | 13 | 30 | 35 | 1 1/2 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 000000 |
| 8 | 7.00"-8.25" | 6 3/4" | 10" | 13 | 30 | 35 | 3 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 000000 |
| 10 | 9.00"-10.25" | 8 3/4" | 11 3/4" | 13 | 30 | 35 | 3 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 000000 |
| 12 | 10.50"-12.25" | 10 1/4" | 13 3/4" | 13 | 30 | 35 | 3 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 000000 |
| 16 | 14.00"-16.00" | 13 3/4" | 19 3/4" | 13 | 30 | 35 | 3 | NPT | Female | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 0000000 | 000000 |
| 12 to 24 | 11.25"-24.00" | 11" | 37" | 13 | 30 | 45 | 3 | NPT | Male | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 00000000 | 00000000 |