Where gas piping is to be installed in more than one portion of an expandable or multiple commercial coach, the design and construction must be as follows:
- (1) There must be only one point of cross over, readily accessible from the exterior of the commercial coach.
- (2) The connector between units must be a listed flexible gas connector approved for exterior use.
- (3) A shut-off valve must be located on the supply side of the connection. Both a flexible gas connector that is approved for exterior use and a quick disconnect type of connector must be tested and approved to IAPMO TSC-9 standard or equal; and both must have a shut-off valve installed that is tested and approved to ANSI Z21.15 standard or equal.
- (4) Protective caps or plugs must be permanently attached to the coach and used to seal the system when not in use.
[Statutory Authority: RCW 43.22.340, [43.22.]355, [43.22.]360, [43.22.]432, [43.22.]440 and [43.22.]480. WSR 96-21-146, § 296-150C-1370, filed 10/23/96, effective 11/25/96.]