Pipe Plug, Med PSI Test, Bypass 146-9 Series
For most size, pressure, chemical, and temperature requirements
Bolt plug sizes smaller than .375" come standard with Neoprene seals, others are Nitrile seals for hydrocarbon resistance. Plated carbon steel. Single Shaft. Tubing plugs may be customized for most size, pressure, chemical, and pressure requirements.
Simple, reliable testing of a pipeline.
Typical Applications: Designed for simple, reliable testing of pipe and tubing to 300 psig (20.7 bar), without the tube wall damage associated with other test plugs. That's because our Bolt Type Medium Pressure Plugs feature a nitrile seal - the only part of the plug that comes in contact with the tube I.D. To use, simply install into the open end of the pipe or tube and tighten the large compression nut to expand the seal element. Then begin testing.
Note: Caps are not included with plugs - click here for caps
Also available in custom configurations with a variety of seal material including Nitrile, EPDM, Viton, Silicone, and Polyurethane for most size, pressure, temperature, and chemical requirements. Generally made with an aluminum body and steel hardware but available with many other materials for your specific requirements. They are available with or without by-pass (vent), valves, remote placement systems, subsea installation, and many other configurations.
| Image | Dia. Max | Dia. Min | By-Pass | Pipeline Max PSI | Pipeline Pressure Max Head | Shipping Wt. | Item Number | Price | Qty | Action |
|---|---|---|---|---|---|---|---|---|---|---|
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10" (254mm) | 9.95" (253mm) | 3/4" NPT | 10 psi (0.68 bar) | 23 ft (7.01 m) | 40 Lb (18.14 Kg) | 146-91000- |
$1,020.00
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8" (203mm) | 7.95" (202mm) | 3/4" MNPT | 15 psi (1.03 bar) | 34 ft (10.36 m) | 28.5 Lb (12.93 Kg) | 146-90800- |
$819.00
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6" (152mm) | 5.95" (151mm) | 1/2" MNPT | 25 psi (1.72 bar) | 58 ft (17.67 m) | 13 Lb (5.9 Kg) | 146-90600- |
$729.00
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5.5" (140mm) | 5.34" (136mm) | 1/2" MNPT | 25 psi (1.72 bar) | 58 ft (17.67 m) | 13 Lb (5.9 Kg) | 146-90550- |
$681.55
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5" (127mm) | 4.95" (126mm) | 1/2" MNPT | 25 psi (1.72 bar) | 58 ft (17.67 m) | 13 Lbs (5.9 Kg) | 146-90500- |
$665.00
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4.5" (114mm) | 4.45" (113mm) | 3/8" MNPT | 40 psi (2.75 bar) | 92 ft (28.04 m) | 4.5 Lbs (2.04 Kg) | 146-90450- |
$665.00
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4.06" (103mm) | 3.76" (96mm) | 3/8" MNPT | 80 psi (5.51 bar) | 185 ft (56.38 m) | 4.5 Lbs (2.04 Kg) | 146-90406- |
$423.00
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3.76" (96mm) | 3.51" (89mm) | 3/8" MNPT | 80 psi (5.51 bar) | 185 ft (56.38 m) | 4.5 Lbs (2.04 Kg) | 146-90376- |
$423.00
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3.51" (89mm) | 3.26" (83mm) | 3/8" MNPT | 80 psi (5.51 bar) | 185 ft (56.38 m) | 4.5 Lbs (2.04 Kg) | 146-90351- |
$383.00
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3.26" (83mm) | 3.07" (78mm) | 3/8" MNPT | 80 psi (5.51 bar) | 185 ft (56.38 m) | 2.75 Lbs (1.25 Kg) | 146-90326- |
$383.00
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3.07" (78mm) | 2.88" (73mm) | 3/8" MNPT | 100 psi (6.89 bar) | 231 ft (70.41 m) | 2.75 Lbs (1.25 Kg) | 146-90307- |
$342.00
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3.15" (80mm) | 2.85" (72mm) | 3/8" MNPT | 100 psi (6.89 bar) | 231 ft (70.41 m) | 2.75 Lbs (1.25 Kg) | 146-9030 - |
$651.00
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2.88" (73mm) | 2.69" (68mm) | 3/8" MNPT | 100 psi (6.89 bar) | 231 ft (70.41 m) | 2.75 Lbs (1.25 Kg) | 146-90288- |
$342.00
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2.69" (68mm) | 2.51" (64mm) | 3/8" MNPT | 100 psi (6.89 bar) | 231 ft (70.41 m) | 2.75 Lbs (1.25 Kg) | 146-90269- |
$342.00
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2.51" (64mm) | 2.31" (59mm) | 3/8" MNPT | 100 psi (6.89 bar) | 231 ft (70.41 m) | 2.75 Lbs (1.25 Kg) | 146-90250- |
$342.00
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2.31" (59mm) | 2.18" (55mm) | 3/8" MNPT | 100 psi (6.89 bar) | 231 ft (70.41 m) | 2.75 lbs (1.25 Kg) | 146-90231- |
$316.00
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2.18" (55mm) | 2.01" (51mm) | 3/8" MNPT | 100 psi (6.89 bar) | 231 ft (70.41 m) | 2.75 Lb (1.25 Kg) | 146-90218- |
$316.00
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2.01" (51mm) | 1.88" (48mm) | 3/8" MNPT | 150 psi (10.34 bar) | 347 ft (105.76 m) | 1 Lb (0.45 Kg) | 146-90200- |
$220.00
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1.88" (48mm) | 1.76" (45mm) | 3/8" MNPT | 150 psi (10.34 bar) | 347 ft (105.76 m) | 1 Lb (0.45 Kg) | 146-90188- |
$220.00
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1.76" (45mm) | 1.63" (41mm) | 3/8" MNPT | 150 psi (10.34 bar) | 347 ft (105.76 m) | 1 Lb (0.45 Kg) | 146-90175- |
$220.00
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1.63" (41mm) | 1.51" (38mm) | 3/8" MNPT | 150 psi (10.34 bar) | 347 ft (105.76 m) | 1 Lb (0.45 Kg) | 146-90163- |
$220.00
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1.51" (38mm) | 1.39" (35mm) | 1/4" MNPT | 200 psi (13.78 bar) | 462 ft (140.81 m) | 1 Lb (0.45 Kg) | 146-90150- |
$220.00
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1.39" (35mm) | 1.26" (32mm) | 1/4" MNPT | 200 psi (13.78 bar) | 462 ft (140.81 m) | 1 Lb (0.45 Kg) | 146-90138- |
$197.00
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1.309" (33.2mm) | 1.280" (32.5mm) | 1/8" MNPT | 175 psi (12.06 bar) | 405 ft (123.44 m) | 1 Lb (0.45 kg) | 146-90131- |
$197.00
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1.26" (32mm) | 1.13" (29mm) | 1/4" MNPT | 200 psi (13.78 bar) | 462 ft (140.81 m) | 1 Lb (0.45 Kg) | 146-90125- |
$197.00
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1.13" (29mm) | 1.01" (26mm) | 1/4" MNPT | 250 psi (17.23 bar) | 577 FT (175.86 m) | 1 Lb (0.45 Kg) | 146-90113- |
$176.00
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1.01" (26mm) | 0.89" (22.6mm) | 1/4" MNPT | 250 psi (17.23 bar) | 577 ft (175.86 m) | 1 Lb (0.45 Kg) | 146-90100- |
$176.00
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0.89" (22.6mm) | 0.83" (21.08mm) | 1/4" MNPT | 250 psi (17.23 bar) | 577 ft (175.86 m) | 1 Lb (0.45 Kg) | 146-90088- |
$166.00
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0.83" (21.08mm) | 0.76" (19.3mm) | 1/4" MNPT | 250 psi (17.23 bar) | 577 ft (175.86 m) | 1 Lb (0.45 Kg) | 146-90083- |
$166.00
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0.76" (19.3mm) | 0.69" (17.52mm) | 1/4" MNPT | 250 psi (17.23 bar) | 577 ft (175.86 m) | 1 Lb (0.45 Kg) | 146-90075- |
$166.00
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0.69" (17.52mm) | 0.625" (15.87mm) | 1/4" MNPT | 250 psi (17.23 bar) | 577 ft (175.86 m) | 1 Lb (0.45 Kg) | 146-90069- |
$158.00
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0.625" (15.87mm) | 0.562" (14.27mm) | 1/8" MNPT | 300 psi (20.68 bar) | 693 ft (211.22 m) | 1 Lb (0.45 Kg) | 146-90063- |
$158.00
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0.562" (14.27mm) | 0.51" (12.95mm) | 1/8" MNPT | 300 psi (20.68 bar) | 693 ft (211.22 m) | 1 Lb (0.45 Kg) | 146-90056- |
$158.00
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0.51" (12.95mm) | 0.44" (11.17mm) | 1/8" MNPT | 300 psi (20.68 bar) | 693 ft (211.22 m) | 1 Lb (0.45 Kg) | 146-90051- |
$268.00
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0.44" (11.17mm) | 0.406" (10.31mm) | 1/8" MNPT | 300 psi (20.68 bar) | 693 ft (211.22 m) | 1 Lb (0.45 Kg) | 146-90044- |
$268.00
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0.406" (10.31mm) | 0.375" (9.52mm) | 1/8" MNPT | 300 psi (20.68 bar) | 693 ft (211.22 m) | 1 Lb (0.45 Kg) | 146-90040- |
$268.00
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0.299" (8mm) | 0.280" (7mm) | 1/8 M NPT | 250 psi (17.25 bar) | 577 ft (176.03 m) | 0.5 Lb (0.23 Kg) | 146-90030- |
$286.00
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0.23" (6mm) | 0.21" (5mm) | N/A | 150 Psi (10.34 Bar) | 346 ft (105.49 m) | 0.5 Lb (0.23 Kg) | 146-90022- |
$268.00
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0.207" (5.26mm) | 0.167" (4.2mm) | N/A | 185 Psi (12.76 Bar) | 427 ft (130.15 m) | 0.5 Lb (0.23 Kg) | 146-90018- |
$268.00
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The 146-9 Series are bolt-type medium pressure test plugs with bypass designed for hydrostatic pressure testing at up to 300 psi (20.7 bar). These durable pipe plugs for pressure testing are available in diameters ranging from 0.28" to 10.5" and have a single-shaft design with a plated carbon steel body and expandable seals. They are suitable for both pipe and tubing, providing a reliable seal without causing damage to the interior pipe wall.
Key Features & Benefits of 146-9 Medium Pressure Test Plugs
These bolt-type test plugs are designed for safe and effective pipe and tube pressure testing. They provide consistent performance with a simple installation technique and materials appropriate for a variety of testing situations.
- Medium Pressure Capability - Rated for hydrostatic pressure testing up to 300 psig (20.7 bar).
- Integrated Bypass Line - Enables venting, filling, and monitoring during pressure tests.
- Seal Materials by Size - Nitrile seals for bigger sizes, while neoprene seals are usual for plugs under 0.375".
- Protects Tube Walls - Only the seal meets the pipe I.D., lowering the chance of internal damage.
- Quick, tool-free installation - Tighten the compression nut to widen the seal and secure the plug.
- Customizable options – This includes alternate seal materials and hardware to satisfy specific pressure, dimension, and chemical requirements.
Typical Applications for Bolt Type Medium Pressure Test Plugs
These pressure test plugs are suited for a variety of testing settings requiring consistent sealing and internal pipe protection. Their inbuilt bypass makes them particularly effective in systems requiring controlled venting or media flow.
- Pressure Testing of Pipes and Tubes - Capable of testing pressure integrity in various piping systems.
- Hydrostatic Testing - It is used in industrial, laboratory, and field environments for fluid-based pressure testing.
- Leak Testing - It allows for reliable detection of leaks without damaging the internal pipe wall.
- Bypass Applications - Ideal where a vent or fill line is required during testing or fluid circulation processes.
How These Medium Pressure Test Plugs Work
Our bolt-type test plugs are designed for ease of application and precise sealing. Their expanding seal mechanism ensures a tight, secure fit with damaging internal pipes, making them perfect for repeatable and reliable pressure testing.
To operate:
- Insert the plug into the open end of the pipe or tube you want to test, making sure it's aligned with the pipe's internal diameter.
- Use hand tools to tighten the compression nut, which will expand the seal. This compresses the rubber element outward, resulting in a tight, leak-resistant seal against the inner wall.
- Begin pressure testing by adding fluid or air to the system. If you need to vent, fill, or monitor pressure during the test, use the built-in bypass port.
Custom Configurations for Pressure Test Plugs
For specialized applications, our medium pressure test plugs can be customized to satisfy specific size, chemical, and environmental specifications. Petersen Products offers a variety of custom solutions to assure performance and compatibility in challenging environments.
- Seal Material Customization - Customizable seal materials include Nitrile, Neoprene, EPDM, Viton, Silicone, and Polyurethane to accommodate different media, temperature ranges, and chemical exposures.
- Optional Add-ons - Plugs can be modified with valves, caps, or remote installation and removal devices for difficult or hazardous sites.
- Subsea and Specialty Use - Custom-built solutions for underwater use, high-pressure environments, or industry-specific applications such as aerospace, oil and gas, and power generation.
Need a Custom Pressure Test Plug? Contact Us
Whether you require a conventional size or a fully customized solution, Petersen Products can help. Our team can help you choose the proper medium pressure test plug or configure a custom solution for your particular application.
Reach out today for expert support on bolt type test plugs by calling us at 262-692-3100 or send us an email at sales@petersenproducts.com.
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