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Multi-Flex™ Hot Tap Plugging Launch Cylinder System

Compact Plug Diameter Allows Insertion Through Small Hot (Live) Tap

Launch cylinder with inflation ram and packing seal allows insertion of Petersen® Plugs into pressurized pipeline.

Typically used for plugging of pipelines through a hot tap in the side of the pipe or through a valve on the end of a pipe. A variety of Petersen® Multi-Flex™ plugs are available for most chemical, pressure, and temperature requirements. A 36" plug as an example may be installed through an 8" Tap with the pipeline pressurized.


Plug Launch Cylinder Assembly

Plug Launch Cylinder System

The Launch Cylinder and Inflation Ram is used for positioning and inflating the plug. Configurations are available to allow removal of the Launch Cylinder and Inflation Ram after inflation.

Plug Launch Cylinder

Plug Launch Cylinder

The plug may be inserted into the Launch Cylinder before or after it is attached to a tapping valve.

Packing Gland

The packing gland provides a seal that allows the inflation ram to push the plug into position.

Inflation Ram

Inflation Ram

The plug is pushed into position with the Inflation Ram after opening the valve and equalizing the pressure in the Launch Tube. An in-line swivel on the end of the Ram allows the plug to navigate the bend. Very large plugs may require a winch to pull the handle and plug into position.

Directional Shoe and Bow Stiffener

Directional Shoe and Bow Stiffener

The Directional Shoe accessory on the plug helps guide the plug in the desired direction into the pipeline. There is also an internal Bow Stiffener to act as a spring bending the plug into the pipeline.

In-Line Swivel

The in-line swivel provides a flexible connection between the inflation ram and plug.

For Hot Tapping Equipment click here Click here for Hot Tap Insertion Plugs

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Swivels, In-Line Shpg Wt lbs

Item

Number

Unit

Price

Each

1.875" OD x 3/4" fnpt, steel
1
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1.875" OD x 3/4" flange, steel
1
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1.875" OD x 1 1/4" fnpt, steel
1
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1.875" OD x 1 1/4" flange, steel
1
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2.88" OD x 2" fnpt, steel
1
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2.88" OD x 2" flange, steel
1
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3.88" OD x 2 1/2" fnpt, steel
1
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3.88" OD x 2 1/2" flange, steel
1
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Launch Cylinders Inflation Rams

Shpg

Wt

lbs

Item

Number

Unit

Price

Each

2" mnpt x 24" long
8
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2" fnpt x 1/2" diameter x 36" long
4
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3" mnpt x 24" long
16
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3" fnpt x 1/2" diameter x 36" long
5
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4" x 150 lb flange x 36" long
66
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4" x 150 lb flange x 3/4" diameter x 48" long
23
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6" x 150 lb flange x 48" long
128
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6" x 150 lb flange x 1 1/2" diameter x 60" long
57
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8" x 150 lb flange x 60" long
227
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8" x 150 lb flange x 2" diameter x 72" long
107
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12" x 150 lb flange x 72" long
404
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12" x 150 lb flange x 2 1/2" diameter x 84" long
205
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Hot Tapping Insertion Systems
2" mnpt x 24" long launch cylinder with 1/2" dia x 36" long inflation ram with 2" fnpt packing seal
12
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3" mnpt x 24" long  launch cylinder with 1/2" dia x 36" long inflation ram with 3" fnpt packing seal
21
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4" x 150 lb flange x 36" long launch cylinder with 3/4" dia x 48" long inflation ram with 4" x 150 lb flange packing seal
89
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6" x 150 lb flange x 48" long launch cylinder with 1 1/2" dia x 60" long inflation ram with 6" x 150 lb flange packing seal
185
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8" x 150 lb flange x 60" long launch cylinder with 2" dia x 72" long inflation ram with 8" x 150 lb flange packing seal
334
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12" x 150 lb flange x 72" long launch cylinder with 2 1/2" dia x 84" long inflation ram with 12" x 150 lb flange packing seal
609
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System Includes:
  Launch cylinder
  Inflation packing gland
  Inflation ram
  Drain valve
  Inflation hose
  Inflation controller with regulator, valve & gauge
  (Full port valve with RF flange and hot tap saddle by others)

 

**Inflatable Plug Warning: Maximum head pressures that a pipe plug may hold back can only be estimated. Pressures are influenced by many factors including fluid in the pipe, coefficient of pipeline friction, pressure required to inflate the plug, and the length of the inflated plug. Generally, an inflatable plug inserted fully into pipeline will begin slipping between 50% and 80% of the inflation pressure, but even 50% may be high with some liquids. The inflation pressure is also subject to temperature change and debris or protrusions in the pipeline that could rupture the plug. The inflation pressure must be monitored and plugs anchored and/or mechanically blocked when slippage may cause property damage or injury.  NEVER use a test pressure greater than the capacity of the weakest pipe or component in the system.

Custom configurations also available

Price subject to change without notice
Petersen Terms & Conditions Apply

Products covered by one or more of the following patents: 4,565,222; 5,353,842; 5,901,752; 6,446,669; 6,568,429; 6,899,138 and other applications pending.