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FlexiGas 40mm Double Sleeved Flexible CSST Gas Pipe - 25m Box

SKU DS-40-25
Original price £780.89 - Original price £780.89
Original price
£780.89
£780.89 - £780.89
Current price £780.89

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The FlexiGas 40mm Double Sleeved Flexible Gas Pipe (DS-40) – 25m Box is a pre-sleeved, twin-layer CSST gas pipe designed to pass through a wide range of installation scenarios straight out of the box. With its built-in sleeve, it can be installed through solid walls, solid floors, screed, soil and unvented voids without requiring additional sleeving on site.

Certified under the BSI Kitemark scheme KM 598726 and manufactured to BS/EN 15266, the FlexiGas DS-40 bends easily by hand for long continuous runs and is designed to install up to 4x faster than copper or rigid steel. The 25-metre boxed coil is suitable for commercial gas installation projects requiring 40mm flexible gas pipework.

DN40 (40mm) 25m Boxed Coil BSI Kitemark KM 598726 1 Year Warranty
Pipe Size
DN40 / 40mm
Coil Length
25 Metres
Max Pressure
0.5 bar
Total Max Diameter
63 mm

Applications & suitability

Commercial Gas Installations

Suitable for commercial gas engineers installing 40mm gas supplies to plant rooms, commercial kitchens and industrial appliances.

Plant Room Gas Supplies

Designed for 40mm gas pipework installations requiring continuous flexible runs through suitable building elements.

Commercial Kitchens

Suitable for gas supply installations serving commercial kitchen equipment where 40mm pipework is required.

Industrial Appliances

Designed for appropriate industrial gas applications requiring DN40 flexible CSST pipework.

Key specifications

Manufacturer / MPN FlexiGas™ / DS-40-25
Size DN40 (40mm)
Length 25 metres — boxed coil
CSST outer / internal diameter 50mm / 41mm
Total max diameter incl. sleeve 63mm
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)

Installation & compatibility

Built-in sleeving: The FlexiGas DS-40 features a built-in sleeve designed to meet the requirements of BS 6891 and IGEM/UP/2, 3 & 7. It can be routed through solid floors, solid walls and structural elements, earth or soil, screed, unventilated voids and unventilated risers without requiring additional sleeving on site. The small annulus allows direct clipping where appropriate.

Design & performance benefits

Patent-Pending Pipe-in-Pipe Design

The design combines an inner corrugated stainless steel gas pipe with a yellow PE cover inside a V0 fire-rated corrugated sleeve in a slidable configuration.

Fast, Flame-Free Installation

The pipe bends by hand for continuous runs with fewer joints and potential leak points, without soldering, sealants or specialist tools.

Metal-to-Metal Sealing

Compatible with the FlexiGas™ FGLink™ range, including more than 25 DN40 fitting types manufactured from dezincification-resistant brass.

BSI Kitemark Certified

Certified under the BSI Kitemark scheme KM 598726 and manufactured to EN 15266 for flexible gas installation applications.

Additional installation features

FG Bond Ready

The pipe is FG Bond ready and features an integrated earthing terminal certified to BS 951:2009.

Fire Tested Sleeve

The built-in sleeve has been fire tested to EN 1775 Annex A & B, with a B-s1 d0 UV-resistant jacket.

Ready for Site Use

The 25-metre boxed coil features metre-marked tubing, a high-visibility yellow jacket and one free roll of silicone tape.

Ideal for

Commercial Gas Engineers

Suitable for commercial engineers installing DN40 gas supplies to plant rooms, commercial kitchens and industrial appliances.

Plant Room Installations

Designed for 40mm gas supplies requiring flexible pipework through walls, floors, screed or unvented areas.

Industrial Gas Applications

A 25-metre boxed coil for suitable industrial appliance gas supply installations requiring DN40 CSST.

Projects Requiring Built-In Sleeving

Ideal where the installation route requires a sleeve through solid construction, screed, soil or unventilated areas.

The FlexiGas 40mm Double Sleeved Flexible Gas Pipe (DS-40) – 25m Box combines a twin-layer CSST construction with a built-in V0 fire-rated sleeve for flexible gas installations. With 25 metres of DN40 pipework, BSI Kitemark certification, hand-bendable installation and compatibility with 25+ DN40 FGLink™ fitting types, it is designed for commercial, plant-room and industrial gas applications requiring efficient, sleeved flexible pipework.

Specifications

BrandFlexiGas
Part NumberDS-40-25
EAN5060951311889
Warranty1 Year

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