I-Purge

Proprietary Relief Valve

• Factory pre-set relief valves allow for precise flow rates while minimizing set-up time and reducing gas consumption
• Aids in maintenance of optimum seal on pipe wall
• Prevents risk of over inflation
• Low profile relief valve available on 2″ and 3″ models

Inert Gas Diffuser

• Patent-pending technology
• Reduces turbulence by dispersing inert gas equally in all directions within the weld zone, improving weld quality and consistency

Tri-Flow Inner Tubing System (BLUE, BLACK & WHITE Hoses)

Multiple inlet/exhaust ports for faster, more efficient purging

Separate Connections:

BLUE– Inflation of Bladders

Initial function is to inflate bladders then flood weld zone with noble gas

BLACK – Gas Distribution Within Weld Zone

Designed to expedite purging, the secondary (BLACK) purge hose is used to flood the weld zone with inert gas and evacuate oxygen at a faster rate

WHITE – Exhaust Connection

Connect this hose to an Oxygen Monitor, such as Aquasol’s PRO OX®-100 that obtains readings down to 100 PPM (0.01%), for continuous or spot monitoring of oxygen in the weld zone

Pull Loops

• Strong pull loops can be connected to a rope or chain to insert or remove the I-Purge
• It is important that bladders be deflated before insertion or removal
• Moderate tension (approx. 5 lbs.) should be applied on pull-wires to prevent sagging of the harness during installation and operation

Carrying Bag

• When welding is complete, bladders can be deflated, extracted, cleaned and stored in the provided carrying bag
• Carrying bag protects the bladder when not in use from dust and debris in most industrial work environments, prolonging life

I-Purge Reducer

• Unlike other models with permanent fittings, a pipe reducer can be easily created by simply connecting two bladders of different, yet similar diameters
• Combine different sizes to create unique pipe configurations

I-Purge Isolator Inflatable Pipe Stopper & Single Purge Bladder

• The I-Purge Isolator is designed to function as a pipe plug for a wide range of applications, including purging of valves or tanks, as well as non-purging applications such as pipe system sealing for servicing, cleaning and inspection
• Constructed of heavy-duty materials designed to withstand the extreme conditions of the petrochemical, utility and construction industries

1. Ensure I-Purge is fully assembled (i.e. Modules are securely connected to harness using quick connect fittings).

2. If necessary, connect rope, chain, or wire to the pull loops on the ends of the bladder modules. This will allow easy insertion and removal of the system.

3. Connect inert gas lines to the BLUE and BLACK hoses.

• BLUE gas hose is required to inflate the purge bladders.
• BLACK gas hose is optional to expedite the purging process

4. Position the purge unit in the pipe using the luminescent indicator as a guide to center the system across the root gap

5. Turn the gas supply on to inflate the bladders and purge the weld zone.

• Recommended Flow Rates for Purging:
• BLUE gas hose should transfer inert gas at 10-32 SCFH (5-15 LPM) for models 2″ – 34″ and 60 SCFH (28.5 LPM) for models 36″– 48″

6. Once a tight seal has been achieved, commence welding while maintaining flow rate.

• Recommended Flow Rates During Welding:
• BLUE gas hose should transfer inert gas at 15-30 SCFH (7.5-15 LPM)

7. After the weld is complete, turn off the gas supply to deflate the bladders. Once the heat zone has sufficiently cooled, remove I-Purge from the pipe. Be sure to disconnect all gas lines and monitoring equipment.

8. Clean I-Purge and store in the provided carrying bag when it is not in use.