No tools are required when configuring the system. To assemble or disassemble the modules from the harness, simply press on the quick connect fitting at the end of each side of the harness and remove or connect.

The bridge harness is the connecting hose between the two inflatable bladders. It is comprised of a flexible braided fiberglass shielding over a high-heat resistant inner tube.

The central point of the bridge harness is marked with a luminescent indicator to easily align the center of the unit with the root gap. It is important to position the bladders at equal distances from the weld joint to prevent over heating of one side, which could rupture or damage the bladder.

Extended length harnesses offer flexibility to extend placement of the inflatable bladders outside the heat affected zone (HAZ) and to accommodate pre-heating (high-heat) welding applications. Extended length harnesses are available in standard sizes including 12″ (305 mm), 24″ (610 mm), 36″ (914 mm), 48″ (1219 mm) and 72″ (1828 mm). I-Purge sizes 36″ and greater are equipped with a high flow harness to expedite inflation. Custom lengths are available upon request.

To prevent exposure to the HAZ, use an extended length harness appropriate for the situation. These harnesses are sold separately and are available in  custom lengths.

I-Purge CAN be used in a pre-heated pipe. For pre-heating and high-heat applications, select an appropriate length of an extended harness to enable placement outside of the heat-affected zone (HAZ).

The outer covering on the inflatable bags of I Purge are the only component which should come into direct contact with the pipe. This material is infused with spark resistant elements which prevent it from catching fire when exposed to sparks and exceedingly hot objects. The outside material of the bladders can withstand temperatures as high as 400°F (205°C). Since the inside of the bladder has a lower heat resistance, it is advisable not to exceed a temperature of 250°F (120°C) for proper operation of the entire system.

I-Purge can accommodate higher temperatures by attaching an extended length harness purchased separately.

I-Purge offers the flexibility of combining modules of different sizes to create a unique configuration. For example, an 8″ (203 mm) module A can be connected to a 4″ (102 mm) module B.

The user MUST NEVER exceed the recommended expansion size labeled on the I-Purge. The unit will not function properly following an over inflation. Refer to manual for details.

If you believe the bladders were overinflated and burst during operation, terminate gas flow immediately. Overinflation can be prevented by adhering to the flow rates listed in the manual.  Aquasol does not warrant any overinflation system failures. For more details, review Warranty and System Operation sections of the manual.

I-Purge X and I-Purge (standard) components CANNOT be interchanged. The calibration of the relief valve on I-Purge X is different from the standard I-Purge.

The CE approved I-Purge Modular Inflatable Purge Bladder is manufactured at Aquasol’s ISO Certified factory in the USA under the strictest quality control procedures.

During some applications, the bladder component of the isolator may not be visible, therefore all I Purge Isolator units are equipped with a pressure relief valve to prevent over inflation of the unit. Therefore, a constant supply of gas must be maintained to keep a tight seal on the pipe wall (Refer to Isolator – System Operation).