BSI Kitemark KM 598726
Independently certified and factory-audited by BSI.
Core system
Flexigas CSST
The flexible stainless-steel gas pipe that routes around obstacles, cuts out joints and installs faster than rigid copper. BSI Kitemarked to EN 15266, DN15 to DN50.
BSI Kitemarked
EN 15266
316L stainless
DN15 to DN50
130+ fittings
Why installers choose it
Less joining. More doing.
Flexigas flexes around joists, through ceilings and across awkward routes that copper has to be soldered around. Fewer joints means fewer leak points and less time on site.
No hot works, no soldering, no specialist tools. The corrugated tube self-flares against the brass fitting for a dry, metal-to-metal seal. Cut, slide, tighten with two spanners, done.
The range
Six sizes. The largest fitting range of any CSST brand.
DN15 to DN50, in boxed coils and long spools up to 400m. Backed by 130+ fittings in dezincification-resistant brass, plus copper transitions so you can switch between Flexigas and copper mid-run.
- Sizes
- DN15 to DN50
- Material
- 316L stainless
- Cover
- Yellow PE, UV stable
- Max pressure
- 0.5 bar
- Fittings
- 130+ codes
- Coils
- 15m to 400m
Certified
BSI Kitemarked to EN 15266.
Over a decade of UK gas installs. Manufactured and tested to BS/EN 15266, maximum operating pressure 0.5 bar, with fire performance tested to EN 1775.
BS/EN 15266
The CSST manufacturing standard. Maximum operating pressure 0.5 bar.
Fire tested
EN 1775 Tests A and B passed. Reaction to fire B-s1 d0.
Datasheets, the installation guide and certifications are all in technical downloads, or size a run with the gas pipe sizing calculator.
Project support
Planning a Flexigas run?
Talk to the Flexigas technical team about routing, sizing or stockist support, or find your nearest stockist to get hold of it.