Pipe-in-Pipe Applications provide an effective approach to thermal insulation and physical protection in industrial and specialised piping systems. By placing an insulated inner pipe within an outer casing, the system creates a controlled space that helps manage heat transfer and protects the pipe assembly.
For engineers, contractors, specifiers and asset owners across Australia, selecting the right insulation material is important for achieving reliable thermal performance. PURL PIP45 is a rigid polyurethane foam designed for pipe-in-pipe applications, providing insulation within the space between the inner and outer pipes.
A pipe-in-pipe system places a carrier (inner) pipe inside an outer pipe or casing, creating an annular space between the two. This space can be filled with polyurethane foam insulation to help manage heat transfer and provide an insulated barrier around the inner pipe.
The insulation layer helps control heat transfer between the inner pipe and its surrounding environment.
Pipe-in-pipe systems can be considered for applications where thermal insulation and protection of piping are required, including:
The installation method depends on the pipe configuration and project requirements. A typical process may include:
Feature | PURL-PIP45 |
| Designed for | Pipe-in-pipe applications where rigid polyurethane foam is used to fill the space between an inner pipe and outer casing |
| System configuration | The inner service pipe is positioned inside an outer casing, with PIP45 filling the annular space |
| Primary function | Provides thermal insulation within the pipe-in-pipe assembly |
| Foam structure | Closed-cell rigid polyurethane foam designed for long-lasting insulation and moisture resistance |
| Application method | Suitable for hand-mixed applications and plural-component dispensing equipment |
| Filling performance | Controlled reaction and good flow characteristics help achieve uniform filling of enclosed or complex spaces |
| Why PIP45? | Purpose-developed for pipe-in-pipe applications, combining effective insulation with controlled, practical installation characteristics |
is a Liquimix polyurethane foam system designed for pipe-in-pipe insulation applications. It is introduced into the annular space between the inner and outer pipes, where it expands to form a rigid insulation layer around the carrier pipe.
The foam provides thermal insulation within the pipe assembly, helping to reduce heat transfer and support temperature management in suitable pipe-in-pipe applications.
Every piping project has different requirements. Contact the Liquimix technical team to discuss your project and determine whether PURL PIP45 is suitable for your pipe-in-pipe application.
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Choosing the right insulation has a major impact on the thermal performance, comfort and energy efficiency of a building. But with so many insulation options available in Australia, how do you know which one is right for your project? Closed-cell spray foam, open-cell spray foam and batt insulation all have
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