Square-Head Expansion Plugs

Turn the square head of the plug into the sealing ring to close off pipe openings. 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 | Max. Back Pressure | |||||||
---|---|---|---|---|---|---|---|---|
Size | ID | Air, psi | Water, ft. of head | O'all Ht. | Temp. Range, °F | Seal Material | Each | |
Plastic Head | ||||||||
1 1/2 | 1.61"-1.71" | 21 | 50 | 2" | 35° to 210° | PVC | 00000000 | 00000 |
2 | 2.07"-2.16" | 21 | 50 | 2" | 35° to 210° | PVC | 00000000 | 0000 |
3 | 3.07"-3.16" | 21 | 50 | 2" | 35° to 210° | PVC | 00000000 | 0000 |
4 | 4.03"-4.12" | 21 | 50 | 2" | 35° to 210° | Polyurethane Rubber | 00000000 | 00000 |
6 | 6.07"-6.16" | 13 | 30 | 2" | 35° to 210° | Polyurethane Rubber | 00000000 | 00000 |
Expansion Plugs with Bypass

Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve pressure while testing. The seal expands to temporarily close off pipe openings. 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 Styles A-E and H-L, twist the wing nut to expand the seal.
Style L have a GHT bypass that connects to standard garden hoses. Ideal for pipe cleanout, they allow for easy, controlled drainage.
For technical drawings and 3-D models, click on a part number.
For Pipe | Max. Back Pressure | Material | Bypass | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | ID | Air, psi | Water, ft. of head | O'all Ht. | Temp. Range, °F | Seal | Bypass Cap | Hose Size | Thread Type | Gender | Each | |
Style L | ||||||||||||
Plastic Stem | ||||||||||||
1 1/2 | 1.50"-1.71" | 40 | 92 | 3 3/4" | Not Rated | PVC Plastic | Plastic | 3/4 | GHT | Male | 0000000 | 00000 |
2 | 1.86"-2.06" | 30 | 69 | 3 3/4" | Not Rated | PVC Plastic | Plastic | 3/4 | GHT | Male | 0000000 | 0000 |
3 | 2.84"-3.09" | 20 | 46 | 3 3/4" | Not Rated | PVC Plastic | Plastic | 3/4 | GHT | Male | 0000000 | 0000 |
4 | 3.89"-4.15" | 10 | 23 | 3 3/4" | Not Rated | PVC Plastic | Plastic | 3/4 | GHT | Male | 0000000 | 0000 |