Petestop® Pipe Plug, Inflatable Flow Stop, 129-8 Series
Quickly Block the flow without depressurizing the pipeline!
Inflatable Line Stop Selection
Highest Pressure: 129-0 Series
Highest Flow Rate: 129-8 Series
Smallest Tap Size: 128-0 Series
Reduce Time and Cost with Petersen® Inflatable Line Stop (ILS) systems. Call Petersen or email to discuss the benefits.
- Safety enhanced and Environmental Risk reduced with smaller hot tap hole to help maintain pipeline integrity.
- Conforms to out of round pipe configurations for better seal than mechanical stops.
- Time and Cost reduced with smaller lighter weight equipment allows and faster deployment.
- High flexibility, small deflated diameter allows installation through much smaller hot tap than much heavier costlier mechanical stops.
- Heavyweight Ballistic Nylon reinforced Polyurethane construction for long term reuse. Materials such as Kevlar and Viton available for most pressure, chemical, and temperature requirements.
- A minimal inflation pressure with water, air or other inert gas will expand the plug thus most of the pressure is applied to pipe ID for sealing.
- Small deflated plug diameter allows flexible insertion through a much smaller hot tap than mechanical Line Stops
- IFS Insertion Systems may be used with multiple plug and pipe sizes.
- Other pressures, sizes, and configurations available
Use Inflatable Line Stop Configurator to estimate dimensions and cost
Note: It is best to stop the flow during the installation of PeteStopTM line stops. If not practical the below “rule of thumb” maximum flow rate seems to be acceptable.
1/2 ft/sec for the 129-0 series standard and high pressure plugs
10 ft/sec for the 129-8 series Flow Stop plugs

Pipe Plug, Inflatable Flow Stop, 129-8 Series
Dia. Max | Dia. Deflated | Dia. Hot Tap Hole, Min | Infl. Max Pressure | Pipeline Max Head | Port, Inflation | Port Location, Infl. | Shipping Wt. | Item Number | Price | Qty | Action |
---|---|---|---|---|---|---|---|---|---|---|---|
96" (2438mm) | 40.875" (1038mm) | 41" (1041mm) | 12 psi (0.82 bar) | 18 ft (5.48 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8096- |
$171,608.70
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84" (2134mm) | 40.875" (1038mm) | 41" (1041mm) | 15 psi (1.03 bar) | 23 ft (7 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8084- |
$139,474.80
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72" (1829mm) | 34.875" (886mm) | 35" (889mm) | 15 psi (1.03 bar) | 23 ft (7 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8072- |
$107,340.90
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66" (1676mm) | 28.875" (733mm) | 29" (737mm) | 20 psi (1.38 bar) | 30 ft (9.14 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8066- |
$82,385.85
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60" (1524mm) | 28.875" (733mm) | 29" (737mm) | 20 psi (1.38 bar) | 30 ft (9.14 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8060- |
$69,053.70
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54" (1372mm) | 28.875" (733mm) | 29" (737mm) | 25 psi (1.72 bar) | 30 ft (9.14 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8054- |
$55,721.55
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48" (1219mm) | 22.875" (581mm) | 23" (584mm) | 30 psi (2.07 bar) | 46 ft (14.02 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8048- |
$45,807.90
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42" (1067mm) | 22.875" (581mm) | 23" (584mm) | 40 psi (2.76 bar) | 61 ft (18.59 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8042- |
$39,996.45
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36" (914mm) | 18.875" (479mm) | 19" (483mm) | 60 psi (4.14 bar) | 92 ft (28.04 m) | 4" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8036- |
$37,261.65
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32" (813mm) | 18.875" (479mm) | 19" (483mm) | 60 psi (4.14 bar) | 92 ft (28.04 m) | 2" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8032- |
$34,526.85
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30" (762mm) | 16.875" (429mm) | 17" (432mm) | 90 psi (6.21 bar) | 138 ft (42.06 m) | 2" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8030- |
$33,501.30
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28" (711mm) | 16.875" (429mm) | 17" (432mm) | 90 psi (6.21 bar) | 138 ft (42.06 m) | 2" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8028- |
$31,450.20
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24" (610mm) | 14.875" (378mm) | 15" (381mm) | 100 psi (6.90 bar) | 153 ft (46.63 m) | 2" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8024- |
$16,921.58
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19.25" (489mm) | 14.875" (378mm) | 15" (381mm) | 100 psi (6.90 bar) | 153 ft (46.63 m) | 2" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8020- |
$15,007.22
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17.25" (438mm) | 12.875" (327mm) | 13" (330mm) | 100 psi (6.90 bar) | 153 ft (46.63 m) | 2" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8018- |
$10,255.50
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15.25" (387mm) | 12.875" (327mm) | 13" (330mm) | 100 psi (6.90 bar) | 153 ft (46.63 m) | 2" X 300 Lb ANSI | Flow anchor | Call for Weight | 129-8016- |
$8,546.25
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13.25" (337mm) | 11.75" (298mm) | 11.875" (302mm) | 100 psi (6.90 bar) | 153 ft (46.63 m) | 2" X 300 Lb | Flow anchor | Call for Weight | 129-8014- |
$8,204.40
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12" (305mm) | 9.75" (248mm) | 9.875" (251mm) | 120 psi (8.28 bar) | 184 ft (56.08 m) | 2" X 300 | Flow anchor | Call for Weight | 129-8012- |
$6,153.30
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10" (254mm) | 9.75" (248mm) | 9.875" (251mm) | 120 psi (8.28 bar) | 184 ft (56.08 m) | 2" X 300 | Flow Anchor | Call for Weight | 129-8010- |
$5,469.60
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8" (203mm) | 7.75" (197mm) | 7.875" (200mm) | 160 psi (11.03 bar) | 246 ft (75 m) | 2" X 300 | Flow anchor | Call for Weight | 129-8008- |
$4,785.90
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6" (152mm) | 5.75" (146mm) | 5.875" (149mm) | 160 psi (11.03 bar) | 246 ft (75 m) | 1" X 150 | Flow anchor | Call for Weight | 129-8006- |
$4,444.05
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