Certified system
Flexigas is BSI Kitemarked KM 598726 and certified to BS EN 15266:2007 for stainless steel pliable corrugated tubing kits for gas.
Core system
Flexigas CSST gas pipe.
CSST means corrugated stainless steel tubing. Flexigas is a flexible fixed gas pipework system made with current production 316L stainless steel tubing and Flexigas fittings. It is BSI Kitemarked KM 598726 to BS EN 15266:2007, rated MOP 0.5 bar and available from DN15 to DN50.
KM 598726
BS EN 15266:2007
MOP 0.5 bar
316L stainless
DN15-DN50
CSST pipe explained
What is CSST gas pipe?
CSST is corrugated stainless steel tubing for fixed gas pipework. The corrugations make the tube flexible enough to route around many obstacles, while the system still needs design-led sizing, support, protection, bonding, tightness testing and Gas Safe competence. Flexigas is not a loose appliance hose and should not be selected by pipe size alone.
Fixed gas pipework
Flexigas CSST is fixed gas pipework, not a flexible appliance connector. Use it with the current Flexigas installation guidance.
Sized before selection
Check connected load, route length, equivalent fittings, gas type and pressure drop before choosing DN15-DN50.
Used as a system
Use Flexigas tubing and Flexigas fittings together. Do not mix Flexigas with other manufacturers' CSST systems.
For the wider background, read what CSST pipe is and where it came from. For current installation detail, use the installation hub or ask Flexigas technical support.
Why installers choose it
Less joining. More doing.
Flexigas can route around joists, through ceilings and across awkward routes that rigid copper often has to be jointed around. On suitable runs, fewer intermediate joints means fewer joints to assemble, inspect and test.
Compared with soldered copper routes, Flexigas can reduce hot-work steps where the installation design allows. The corrugated tube self-flares against the brass fitting for a dry, metal-to-metal seal; use the current installation guide for the full cutting, fitting, bonding and testing sequence.
The range
Six sizes, 130+ fitting codes and copper transitions.
DN15 to DN50, in boxed coils and long spools up to 400m. Backed by 130+ fitting codes in CW602N brass, plus approved connector routes for transitions to copper, iron and brass pipework.
- 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 BS EN 15266:2007.
Flexigas is supplied with BSI Kitemark KM 598726 certification context, BS EN 15266:2007 product standard context and maximum operating pressure 0.5 bar. Use the current documents before specifying or installing.
BSI Kitemark KM 598726
Independently certified and factory-audited by BSI.
BS EN 15266:2007
The stainless steel pliable corrugated tubing kits standard referenced for Flexigas CSST.
MOP 0.5 bar
Maximum operating pressure 0.5 bar, with standard Flexigas sizes from DN15 to DN50.
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.