Products: Speciality Products

Pneu-Flush™

A flushing and cleaning system specifically designed for pneumatic control air lines. It utilizes DuPont^® Vertrel^® XM, a premier ozone-safe HFC cleaning solvent. Pneu-Flush works quickly and easily to clean and purge the compressed air lines in HVAC control and other pneumatic systems.

The Pneu-Flush System (patent pending) consists of a pressure-tested canister charged with approximately two quarts of Vertrel XM, a revolutionary HFC solvent that has excellent solvency and performance characteristics. The package is pressurized and R-134a is used as a propellant. It is sealed with a special valve fitting that only accepts the Pneu-Flush Injection Assembly.

Benefits

• Field-tested procedure
• Solvent is safe and nonflammable
• Process is flexible. It easily allows for flushing by floor, by section or even by controller.
• Fits in with related work in any overhaul or conversion
• Avoids troubleshooting call-backs
• Process allows for cleaning & flushing in one service call

Application

Pneumatic systems are installed in thousands of large and small buildings, and they are generally consist of an air compressor that supplies compressed air to controllers (i.e. thermostats) that in turn operate controls (i.e. dampers) for cooling, heating and other functions & applications. If the compressor is improperly sized for the demand or if general maintenance has been lacking over time, the controllers (and eventually the controls) will become clogged or plugged with oil, moisture and dirt. In order to return the system to designed capacity and efficiency, a thorough cleaning and flushing is necessary. Such a cleaning requires a solvent with good solvency, material compatibility, complete evaporation and no environmental concerns, Pneu-Flush meets this demand.

General Guidelines

1. Use appropriate and established service techniques.
2. Use only the Pneu-Flush flushing procedure for purging the lines.
3. Establish baseline performance data through investigation before beginning the repair.
4. Each installation will require estimating the quantity of flushing solvent to use. Factors to consider: will you flush the entire system or only a portion, the total length and sizes of air lines to be flushed, estimated contamination within the system, and ease of access to the system. Keep in mind that most plugging or contamination usually occurs in lines and controllers nearest the compressor.
5. Systems which are hard to flush and/or where solvent entrapment is likely should be isolated from the rest of the system and flushed independently, if possible.
6. Consult Table 1 for estimating Pneu-Flush requirements. Generally, as an average, one canister can flush 500 feet of combined 1/4", 3/8" and 1/2" line. Typically, there will be an average of one controller for every 20 feet of line.

See Application Bulletin Download for specific instructions.

Packaging

Product Literature Downloads:

MSDS Information
Pneu-Flush - Application Bulletin

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