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Fittings need to remain accessible and should not be buried or conceals within the fabric of the building.

Pliable corrugated (stainless steel) tubing for direct burial must have a minimum 0.5mm outer cover that has a maximum chloride content of 50ppm.

Support intervals are similar to rigid pipe materials and the manufacturer will stipulate the maximum intervals within their installation instructions.

Pliable corrugated (stainless steel) tubing still needs to be sleeved where it passes through walls or solid floors.

Any portions of exposed stainless steel behind the fitting nut shall be wrapped with self-amalgamating silicone tape. The use of jointing compounds between the metal to metal sealing face is prohibited.Īfter the gas tightness test – care must be taken after pressure test to ensure that no stainless steel pipe is visible. No special tools are required: a wheeled tube cutter with a stainless steel wheel, a utility knife and correctly sized spanners. Pliable corrugated (stainless steel) tubing can form to either a metal to metal seal or use elastomeric seals.

Pliable corrugated (stainless steel) tube is typically available in DN sizes:ĭN10/12 DN15 DN20/22 DN25/28 DN32 DN40 DN50

The system is Kitemarked approved to BS7838:1996 – Specification for corrugated stainless steel semi-rigid pipe and associated fittings for low-pressure gas pipework of up to DN 50 and BS EN 15266:2007 – Stainless steel pliable corrugated tubing kits in buildings for gas with an operating pressure up to 0,5 bar. It is suitable for use in domestic, commercial and industrial applications. Pliable corrugated (stainless steel) tube is a semi rigid gas pipe that has the ability to bend and mould to curvature required.