Grey 27mm (3/4″) ABS Aspirating Pipe 3 Metre Length

FAQ

What is the purpose of the ABSCLI0250 pipe?

The ABSCLI0250 is a sampling pipe designed specifically for aspirating smoke detection (ASD) systems. It forms the network that actively transports air samples from protected areas back to the aspirating smoke detector. The pipe enables very early fire detection by continuously drawing air samples through strategically positioned sampling holes along the pipe network.

What are the dimensions of this pipe?

The ABSCLI0250 has a 27mm (3/4″) nominal bore diameter, with each length measuring 3 metres. This imperial-sized dimension makes it compatible with 3/4″ aspirating detection systems and provides adaptability for installations requiring imperial sizing standards.

Which aspirating smoke detection systems is this pipe compatible with?

The ABSCLI0250 is compatible with all major brands of low-pressure aspirating smoke detection systems, including VESDA, FAAST, ICAM and other leading ASD manufacturers. The pipe meets the industry standards required for these systems and provides the optimal airflow characteristics needed for effective smoke detection.

What material is the pipe made from and why?

The pipe is manufactured from grey ABS (Acrylonitrile Butadiene Styrene) plastic. ABS is chosen for its superior physical properties including excellent tensile strength, chemical resistance, impact toughness, weatherability and heat stability. The material is homogenous with good chemical resistance and high impact strength, performing reliably across temperatures from -40°C to 80°C and providing exceptional resistance to accidental damage, making it ideal for aspirating detection applications.

How do I join sections of this pipe together?

The pipe is joined using ABS solvent cement welding with appropriate fittings such as sockets or couplings. The process involves cutting the pipe squarely using proper tools (only use approved pipe plastic cutters with sharp cutting edges), removing burrs, abrading both surfaces, cleaning with MEK cleaner (do not use other solvents), then applying ABS solvent cement before pushing the pipe fully into the fitting. When correctly made, these joints are stronger than either the pipe or fittings themselves.

Why choose grey pipe instead of red pipe?

Whilst red is the standard colour for aspirating smoke detection pipes to identify them as part of a fire detection system, grey pipes are available to accommodate aesthetic requirements. Grey pipework is ideal for installations in commercial offices, retail environments, museums, prestigious buildings or any location where the visual appearance is important and red pipework may be too visually intrusive. The grey pipe offers the same performance characteristics as red pipe whilst providing a more discreet and neutral appearance.

What standards does this pipe comply with?

The ABSCLI0250 is manufactured to comply with EN 54-20 (fire detection and fire alarm systems – aspirating smoke detectors) and EN 61386-1 (conduit systems for cable management) standards. This ensures the pipe meets the stringent requirements for professional fire detection installations in the UK and Europe.

Can this pipe be used in harsh or extreme environments?

Yes, the ABS material provides excellent chemical resistance to a wide range of acids, alkalis and aggressive chemicals. The pipe maintains its impact strength and toughness across temperatures from -40°C to 80°C (working temperatures between -20°C to 40°C are recommended), making it suitable for demanding environments. However, care should be exercised in extremely cold environments to avoid unnecessary rough handling. When ambient temperatures are between 15°C to 25°C, pipe expansion joints should be used.

What are the installation requirements for this pipe?

Key installation requirements include: do not bend the pipe; do not paint; keep pipe clean and free from dust; do not install in direct sunlight; pipe clips are required every 800mm; only install with approved fittings; do not use solvents to clean, only soapy water; and only use approved pipe plastic cutters to cut the pipe, ensuring that cutters are sharp.

How should I store this pipe before installation?

The pipe should be stored flat on a level surface free from sharp stones. Stacks should not exceed a maximum height of 500mm to avoid pipe distortion. The pipe should be protected from weathering, particularly UV exposure, by placing an opaque covering over the stack. Side bracing should be provided to prevent stack collapse. The pipe should be kept in protective wrappings until required for use.

What spacing is required for sampling points on this pipe?

According to BS5839, sampling points shall not be at more than 10 metre intervals. For electronic data processing installations covered by BS6266, sampling points shall not be at more than 5 metre intervals. Each sampling point must be clearly identified with appropriate labels. The specific design and spacing should be calculated using appropriate pipe network design software such as ASPIRE.