Pipe Plug, PeteStop® ILS Inflatable Line Stop, 128 Series
For most size, pressure, chemical, and temperature requirements
Quickly Block the Flow without depressurizing the pipeline!
Petersen’s PeteStop® 128-Series Line Stop is our patented inflatable line stop systems developed to be a far more economical and effective solutions for isolating pressurized pipelines. The small tap hole requires of any PeteStop® plug, reduces equipment size, setup time, and overall project risk.
Key Advantages of PeteStop® 128-Series Pipe Plug Systems:
- Faster – Smaller, lighter equipment speeds up installation and removal.
- Lower Costs – Reduced tap hole size and smaller equipment mean less time and expense.
- Enhanced Safety – Smallest tap hole and larger plug surface area reduce stress on the pipe.
- Lower Environmental Risk – Minimal tap hole lowers potential leakage points.
- Handles Abnormal Pipe Conditions – Works in heavy corrosion, out-of-round pipe, weld beads, and more.
- Versatile – Meets most size, pressure, chemical, and temperature requirements.
- Effective in Tight Spaces – Designed for limited work environments.
- Minimal Seal Pressure Needed – Seals securely inside the pipe with low inflation pressure.
- Reusable – Constructed with heavyweight industrial ballistic nylon reinforced polyurethane (Kevlar, Nitrile, EPDM, Viton, and other options available).
- Superior Pipe Conformance – Adapts better to irregular pipe surfaces.
- Gentle on Aging or Compromised Pipe – Less stress compared to mechanical stops.
- Works Alongside Mechanical Stops – Ideal as a complement when a mechanical seal isn’t possible.
- Over 100 years of pipeline plugging experience.
- Made in the USA
128 Series Configurator
Pictures in the Field
Inflatable Line Stop Contractors
Product Instruction Manual
| Image | Dia. Max | Dia. Deflated | Dia. Hot Tap Hole, Min | Pipe Plug Inflation Max Press. | Pipeline Pressure Max Head | Port, Inflation | Length Deflated | Shipping Wt. | Item Number | Price | Qty | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
72" (1829mm) | 14.75" (375mm) | 15" (381mm) | 7 psi (0.48 bar) | 3.5 psi (0.24 bar)/8.1' (2.46 m) | 3 M | 233" (5918mm) | 225 Lb (102.06 Kg) | 128-072- |
$22,900.00
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66" (1676mm) | 12.75" (324mm) | 13" (330mm) | 8 psi (0.55 bar) | 4 psi (0.28 bar)/9.2' (2.81 m) | 3 M | 216" (5486mm) | 221 Lb (100.24 Kg) | 128-066- |
$17,600.00
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60" (1524mm) | 12.75" (324mm) | 13" (330mm) | 9 psi (0.62 bar) | 4.5 psi (0.31 bar)/10.4' (3.16 m) | 3 M | 199" (5055mm) | 216 Lb (97.98 Kg) | 128-060- |
$15,100.00
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54" (1372mm) | 11.75" (298mm) | 11.875" (302mm) | 12 psi (0.83 bar) | 6 psi (0.41 bar)/13.8' (4.22 m) | 3 M | 184" (4674mm) | 198 Lb (89.81 Kg) | 128-054- |
$12,300.00
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|
48" (1219mm) | 9.75" (248mm) | 9.875" (251mm) | 15 psi (1.03 bar) | 7.5 psi (0.52 bar)/17.3' (5.27 m) | 3 M | 154" (3912mm) | 179 Lb (81.19 Kg) | 128-048- |
$10,200.00
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42" (1067mm) | 9.5" (241mm) | 9.75" (248mm) | 21 psi (1.45 bar) | 10.5 psi (0.72 bar)/24.2' (7.38 m) | 3 M | 138" (3505mm) | 144 Lb (65.32 Kg) | 128-042- |
$8,900.00
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|
36" (914mm) | 9.5" (241mm) | 9.75" (248mm) | 25 psi (1.72 bar) | 12.5 psi (0.86 bar)/28.8' (8.79 m) | 3 M | 122" (3099mm) | 93 Lb (42.18 Kg) | 128-036- |
$6,500.00
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33" (838mm) | 8.875" (225mm) | 9.75" (248mm) | 30 psi (2.07 bar) | 15 psi (1.03 bar)/34.6' (10.55 m) | 3 M | 110" (2794mm) | 87 Lb (39.46 Kg) | 128-033- |
$6,300.00
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30" (762mm) | 7.775" (197mm) | 7.875" (200mm) | 30 psi (2.07 bar) | 15 psi (1.03 bar)/34.6' (10.55 m) | 3 M | 100" (2540mm) | 80 Lb (36.29 Kg) | 128-030- |
$5,800.00
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24" (610mm) | 7" (178mm) | 7.75" (197mm) | 37 psi (2.55 bar) | 18.5 psi (1.28 bar)/42.7' (13.01 m) | 3" M | 82" (2083mm) | 63 Lb (28.58 Kg) | 128-024- |
$4,590.00
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20" (508mm) | 6.5" (165mm) | 7.75" (197mm) | 40 psi (2.76 bar) | 20 psi (1.38 bar)/46.1' (14.06 m) | 2 M | 69" (1753mm) | 41 Lb (18.60 Kg) | 128-020- |
$3,540.00
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18" (457mm) | 6.25" (159mm) | 7.75" (197mm) | 48 psi (3.31 bar) | 24 psi (1.65 bar)/55.4' (16.87 m) | 2 M | 63" (1600mm) | 36 Lb (16.33 Kg) | 128-018- |
$3,360.00
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16" (406mm) | 5.5" (140mm) | 5.75" (146mm) | 48 psi (3.31 bar) | 24 psi (1.65 bar)/55.4' (16.87 m) | 2 M | 58" (1473mm) | 34 Lb (15.42 Kg) | 128-016- |
$3,110.00
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|
15" (381mm) | 5.5" (140mm) | 5.75" (146mm) | 57 psi (3.93 bar) | 28.5 psi (1.97 bar)/65.7' (20.04 m) | 2 M | 55" (1397mm) | 34 Lb (15.42 Kg) | 128-015- |
$2,890.00
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14" (355mm) | 5.5" (139.7mm) | 5.75" (146.05mm) | 57 psi (3.93 bar) | 28.5 psi (1.97 bar)/65.7' (20.04 m) | 2 M | 55" (1397mm) | 34 Lb (15.42 Kg) | 128-014- |
$2,890.00
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12" (305mm) | 5.5" (140mm) | 5.75" (146mm) | 90 psi (6.21 bar) | 45 psi (3.1 bar)/103.8' (31.6 m) | 2 M | 46" (1168 mm) | 30 Lb (13.61 Kg) | 128-012- |
$2,760.00
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10" (254mm) | 4.75" (121mm) | 5.75" (146mm) | 90 psi (6.21 bar) | 45 psi (3.1 bar)/103.8' (31.6 m) | 2 M | 40" (1016mm) | 26 Lb (11.79 Kg) | 128-010- |
$2,660.00
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8" (203mm) | 4.5" (114mm) | 5.5" (140mm) | 90 psi (6.21 bar) | 45 psi (3.1 bar)/103.8' (31.6 m) | 2 M | 29" (737mm) | 18 Lb (8.16 Kg) | 128-008- |
$2,310.00
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6" (152mm) | 3.25" (83mm) | 3.750" (95mm) | 90 psi (6.21 bar) | 45 psi (3.1 bar)/103.8' (31.6 m) | 1-1/4 M | 25" (635mm) | 10 Lb (4.54 Kg) | 128-006- |
$2,220.00
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4" (102mm) | 2.5" (64mm) | 2.875" (73mm) | 90 psi (6.21 bar) | 45 psi (3.1 bar)/103.8' (31.6 m) | 3/4 M | 19" (483mm) | 6 Lb (2.72 Kg) | 128-004- |
$2,050.00
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3" (76mm) | 1.75" (44mm) | 1.875" (48mm) | 90 psi (6.21 bar) | 45 psi (3.1 bar)/103.8' (31.6 m) | 3/4 F *RE | 13.75" (349mm) | 2 Lb (0.91 Kg) | 128-003- |
$1,870.00
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2" (51mm) | 1.75" (44mm) | 1.875" (48mm) | 90 psi (6.21 bar) | 45 psi (3.1 bar)/103.8' (31.6 m) | 3/4 F *RE | 10.75" (273mm) | 2 Lb (0.91 Kg) | 128-002- |
$1,870.00
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The PeteStop® 128-Series Inflatable Line Stop is Petersen's original in-line stopping device, designed to temporarily stop pressurized pipeline flow without requiring system depressurization.
The 128-Series is designed for quick, safe, and efficient operation, with the smallest tap hole of any PeteStop® plug—reducing pipe tension, reducing environmental risk, and reducing downtime.
Key Features and Benefits of PeteStop® 128 Series Inflatable Line Stop
The PeteStop® 128-Series Inflatable Line Stop is designed for reliability, efficiency, and versatility in demanding pipeline conditions. Whether operating in tight places, dealing with pipe irregularities, or requiring a quick solution without shutting down the system, this plug gives exceptional results with little disruption.
- Smallest Tap Hole – It reduces stress on the pipe and the potential of environmental leakage.
- Lightweight Design - Allows for faster setup and simpler handling in the field.
- Chemical and temperature resistant - Designed to deal with a wide range of industrial conditions.
- Minimal Insertion Pressure – It ensures a secure seal even in old or degraded pipelines.
- Compatible with Irregular Pipe Surfaces - Ideal for pipes that have extensive corrosion, weld beads, or are out of round.
- Reusable Construction - Made of reinforced ballistic nylon with choices for Kevlar and Viton for extra durability.
- Works in Tight Spaces - The compact design is ideal for usage in limited-access or constrained work spaces.
How does 128 Series Inflatable Line Stops Work?
PeteStop® 128-Series allows you to block flow in a pressurized pipeline without shutting down the system. This quick, non-intrusive method saves time, labor, and reduces environmental risk.
Step-by-step process
- Drill a small taphole - The live pipeline creates a small tap hole, the smallest among PeteStop® systems.
- Insert the inflatable plug - The deflated plug is guided through the tap hole with lightweight insertion tools.
- Inflate to seal - Inside the pipe, the plug expands and forms a tight seal against the inner wall, stopping flow.
- Complete maintenance or repair - With the flow stopped, personnel can safely access downstream areas for repair, inspection, or maintenance.
- Deflate And Remove - After the procedure is completed, the plug is deflated and removed through the same tap hole.
- Close the Tap Hole - A completion plug closes the gap, restoring the pipe to service.
Because it operates in a pressurized atmosphere, there is no need to depressurize or drain the pipeline, making the 128-Series suitable for emergency repairs or operations where downtime is not tolerated.
Applications of PeteStop® 128-Series Inflatable Line Stop
PeteStop® 128-Series Inflatable Line Stop is designed for a variety of pipeline isolation applications across various sectors. Its ability to block pressured flow with minimal disruption makes it excellent for critical infrastructure maintenance and difficult repair circumstances.
- Municipal Water and Sewer Systems - Isolate sections for maintenance or repair without disrupting service to the surrounding areas.
- Industrial Pipeline Maintenance - Perform inspections, upgrades, or valve replacements in pressurized pipelines.
- Emergency Pipeline Repair - Quick response to leaks or damage, particularly when shutdown is not an option.
- Chemical and Utility Line Isolation: A safe blocking solution for chemical processing lines, utility conduits, and high-risk applications.
- Aging Infrastructure and Retrofit Work - Suitable for pipelines with compromised structural integrity, uneven surfaces, or out-of-round conditions.
Get a Quote for Your Line Stop Application
Need to separate a live pipeline without depressurizing it?
The PeteStop® 128-Series Inflatable Line Stop is designed for quick, safe, and reliable blocking in pressured pipelines—perfect for municipal, industrial, and emergency repair circumstances. Our expertise can help you choose the best design, including choices for elbow installations in restrictive areas.
To know more details, call us at 262-692-3100 or submit your details through our Online Quote Form to get started.
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