The FlexiGas 32mm Double Sleeved Flexible Gas Pipe (DS-32) – 25m Box is a pre-sleeved, twin-layer CSST gas pipe designed to cover a wide range of UK installation scenarios straight out of the box. Its built-in sleeve allows installation through solid walls, solid floors, screed, soil and unvented voids without requiring additional sleeving on site.
Manufactured to BS/EN 15266 and certified under the BSI Kitemark scheme (KM 598726), the DS-32 features a pipe-in-pipe construction combining a corrugated stainless steel gas pipe with a yellow PE cover inside a V0 fire-rated corrugated sleeve. The flexible design bends by hand, enabling long continuous runs with fewer joints and a flame-free installation process.
32mm CSST Gas Pipe
25m Boxed Coil
Double Sleeved
BSI Kitemark KM 598726
130+ FGLink™ Fittings
Key Highlights
0.5 bar
Max Operating Pressure
Applications & Suitability
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Commercial gas supplies: Suitable for commercial gas engineers running 32mm supplies.
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Plant rooms: Designed for higher-demand gas supply installations.
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Commercial kitchens: Suitable for commercial kitchen gas supply applications.
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Higher-demand appliances: Designed for larger gas supply requirements.
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Complex routing: Can be routed through solid walls, solid floors, screed, soil and unvented areas without additional sleeving.
Key Specifications
| Manufacturer / MPN |
FlexiGas™ / DS-32-25 |
| Size |
DN32 (32mm) |
| Length |
25 metres — boxed coil |
| CSST Outer / Internal Diameter |
38mm / 33mm |
| Total Max Diameter Including Sleeve |
51mm |
| Max Operating Pressure |
0.5 bar (BS/EN 15266) |
| Tubing Material |
1.4404 / 1.4541 stainless steel (BS/EN 10088) |
| Fire Performance |
EN 1775 Annex A & B passed; jacket B-s1 d0, UV resistant |
| Certification |
BSI Kitemark KM 598726, EN 15266 |
| Colour |
Yellow |
| Warranty |
1 Year (subject to manufacturer's T&Cs) |
Patent-Pending Pipe-in-Pipe Design
Twin-layer construction: The DS-32 combines an inner corrugated stainless steel gas pipe with a yellow PE cover, positioned inside a V0 fire-rated corrugated sleeve.
Slidable configuration: The pipe-in-pipe design allows the CSST to be inserted and withdrawn, providing flexibility during installation and routing.
Built-In Sleeve for Multiple Installation Scenarios
The built-in sleeve is designed to meet the supplied requirements of BS 6891 and IGEM/UP/2, 3 & 7. This allows the DS-32 to be routed through a variety of installation environments, including solid floors, solid walls, structural elements, earth or soil, screed, unventilated voids and unventilated risers.
The small annulus also allows direct clipping where applicable, while the pre-sleeved construction removes the need for additional sleeving on site for the stated installation scenarios.
Solid Walls & Floors
Suitable for routing through solid walls, solid floors and structural elements.
Screed & Soil
The supplied sleeving design supports routing through screed and earth or soil.
Unventilated Areas
Designed for unventilated voids and unventilated risers within the stated installation requirements.
Fast, Flame-Free Installation
The flexible CSST construction can be bent by hand to create long continuous runs. This can reduce the number of joints and potential leak points compared with traditional rigid installation methods. The supplied information states that the pipe can install up to 4× faster than copper or rigid steel.
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Hand-bendable: Easily bends by hand for flexible routing.
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Continuous runs: Enables long runs with fewer joints.
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Flame-free: No soldering required.
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No sealants: Designed for installation without sealants.
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No specialist tools: The supplied product information states that specialist tools are not required.
FGLink™ Compatibility & Bonding
The DS-32 is compatible with the full FlexiGas™ FGLink™ range of 130+ dezincification-resistant brass fittings, providing a secure metal-to-metal seal for connections.
The pipe is also FG Bond™ ready and can be paired with its integrated earthing terminal, which is certified to BS 951:2009, for electrical bonding.
Included & On-Site Features
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25m boxed coil: Supplied as a 25-metre boxed coil.
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Metre-marked tubing: Makes measuring and cutting easier during installation.
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High-visibility yellow jacket: Provides clear identification on site.
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Silicone tape: One free roll of silicone tape is included in every box.
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FGLink™ compatibility: Works with 130+ compatible fittings from the FlexiGas range.
Standards, Certification & Fire Performance
BSI Kitemark
Certified under BSI Kitemark KM 598726.
EN 1775
Fire tested to EN 1775 Annex A & B as supplied.
BS/EN 15266
Manufactured to BS/EN 15266 with a stated maximum operating pressure of 0.5 bar.
Jacket Performance
Yellow jacket rated B-s1 d0 and UV resistant.
Ideal For
- Commercial gas engineers installing 32mm gas supplies
- Plant room gas supply installations
- Commercial kitchen gas supplies
- Higher-demand gas appliances
- Long continuous gas pipe runs
- Installations through walls, floors, screed, soil and unventilated areas
- Projects using FlexiGas DS end caps and FGLink™ fittings
Frequently Asked Questions
What size is the FlexiGas DS-32?
The DS-32 is a DN32 (32mm) flexible CSST gas pipe supplied as a 25-metre boxed coil.
Does the DS-32 require additional sleeving?
The product is pre-sleeved and designed to cover the stated installation scenarios without additional sleeving on site.
What is the maximum operating pressure?
The stated maximum operating pressure is 0.5 bar, according to BS/EN 15266.
What is the length of the DS-32?
The DS-32 is supplied as a 25-metre boxed coil.
Which fittings are compatible with the DS-32?
The pipe is compatible with the FlexiGas™ FGLink™ range of 130+ dezincification-resistant brass fittings.
What certification does the DS-32 have?
The DS-32 is certified under the BSI Kitemark scheme KM 598726 and manufactured to EN 15266. It has also passed EN 1775 Annex A & B fire testing.
What is included with the FlexiGas DS-32?
Each box includes the 25m pre-sleeved CSST gas pipe and one free roll of silicone tape.
FlexiGas 32mm Double Sleeved Flexible Gas Pipe DS-32 – 25m Box provides a versatile solution for commercial and higher-demand gas installations. With its pre-sleeved pipe-in-pipe design, hand-bendable CSST construction, 25m length, 0.5 bar maximum operating pressure, BSI Kitemark certification and compatibility with 130+ FGLink™ fittings, it is designed for efficient routing through a wide range of installation environments without additional sleeving on site.
