Thread: CSST Through Kitchen Cabinet

Checked all the posts on here, no mention of CSST passing through kitchen cabinets. I think I remember reading this can not be exposed to corrosive materials.

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Needs to be properly secured/supported, but I don't believe it's problem running it through there.

Here is Gastite's Install Guide

It is best to keep the CSST away from other metals such as that copper piping. The danger has to do with lighting strikes. Arcing from strikes can jump from the copper pipe to the CSST and burn a hole causing a gas leak.

Always check for bonding of the gas piping whenever you see CSST and check to see if CSST is laying across metal ductwork and stuff like that.

You might be thinking that the CSST has the insulating coating and that should keep it from arcing. What can happen is, the coating blocks the free flow of current which allows the energy to build up. It then eventually finds the weak spot in the coating and spikes a huge charge which burns a hole in the tubing.

Originally Posted by John Dirks Jr

You might be thinking that the CSST has the insulating coating

And if one did, one would be wrong as that covering is not designed nor intended to provide electrical insulation, it is designed and intended to help protect the CSST from corrosion and very minor physical damage during installation - it is not intended to provide protection from physical damage, which is why nail protection plates, coverings, etc., are required wherever CSST is exposed to physical damage.

From the link Dom posted:
b) The tubing is connected using special mechanical brass fittings designed specifically for Gastite® CSST.

• Corrosion resistant brass fittings incorporate the Gastite® patented “Jacket Lock” feature. The polyethylene jacket is clamped by the fitting thereby minimizing the risk of contact with corrosives and foreign material.
• Gastite ® fittings have standard NPT threads and may be used in combination with all approved fuel gas piping materials with the pipe threads as the interface. System components such as manifolds, tees and stub-outs may be fabricated from other approved materials to be used with Gastite® flexible gas piping.
• The self-flaring fitting creates a one step, reusable, metal on metal seal.
c) The polyethylene jacket is extruded over the stainless steel tubing creating a flexible, protective covering. The jacket is an added feature of the tubing and does not affect the flaring/sealing process.
• The jacket is engineered with thermal and UV resistant material making it suitable for outdoor use.
• The polyethylene is fused with flame retardant material making it ASTM E84 Compliant. As a fire rated material, it meets the requirements for flame spread and smoke density. This allows the jacket to remain intact throughout a building, thus maximizing the protection provided by the jacket.
• The polyethylene extrusion process creates a smooth outside surface; this surface greatly aids in pulling the tube through tight building spaces.