Technical downloads
Installation manual, data sheets and certification.
Start with the four core resources: the UK installation manual, the standard CSST spec sheet, the BSI Kitemark certificate and the sizing calculator. Brochures and DS support documents follow below.
Start here
The four core resources.
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Download PDF
UK Installation Manual
Cuts, terminations, routing, bonding, testing and standards for Gas Safe registered engineers.
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Download PDF
Standard Flexigas CSST Spec Sheet
Sizes, dimensions, materials and working parameters for the standard Flexigas CSST tubing and fitting system.
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Download PDF
BSI Kitemark Certificate
Certification to BS EN 15266 for building control and specification packs.
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Open calculator
Gas pipe sizing calculator
Size Flexigas runs on site to BS 6891, free in your browser, with a live result.
Product literature and support
Brochures and support documents.
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Download PDF
Flexigas Brochure
The full Flexigas system overview: pipe, fittings, FG Bond and accessories.
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View fittings and accessories
Fittings and accessories
The products hub contains the Flexigas fittings, transition options and installation accessories.
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Download PDF
Flexigas DS support data sheet
Legacy support document for installed Flexigas DS systems. Confirm current availability, document status and project suitability with Flexigas technical support before use on a new job.
Industry memberships
Part of the merchant community.
Flexiridge Ltd, the company behind Flexigas, is a Supplier Member of the Builders Merchants Federation (BMF).
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Download PDF
BMF Supplier Membership Certificate
Flexiridge Ltd's supplier membership of the Builders Merchants Federation for 2026–2027.
Need something else?
Can't find the document you need?
Talk to the Flexigas technical team and we will send it over, or answer your question direct.