Section 20.20.258 Fuel gas pipe - materials and methods.

1. Gas piping must be so constructed and installed to be durable, substantial and gastight. All steel pipe over two inches diameter, and all pipe, regardless of size carrying one psi or more for residential projects only, and up to five psi for commercial projects only, shall have welded joints and fittings between the connection at the meter and the appliance shutoff valve.

2. Service piping may be installed by licensed plumbing, ducted air or hydronic heating/cooling contractors only. Service piping must be routed to be accessible for maintenance.

3. Unions, tube fittings, running threads, right and left couplings, bushings and swing joints made by combinations of fittings may not be used.

4. An accessible shutoff valve must be installed in the fuel supply piping outside of each appliance and ahead of the union connection thereto, and in addition to any valve on the appliance. Shutoff valves must be located within three feet of the appliance. Such valves may be located immediately adjacent to and inside or under an appliance, when placed in an accessible and protected location, and when such appliance may be disconnected without removal of the valve. (Ord. 2000-9735)