16 Tex. Admin. Code § 9.134
LP-gas piping shall be installed only by a licensee authorized to perform such installation. A licensee shall not connect an LP-gas container or cylinder to a piping installation made by a person who is not licensed to make such installation, except that connection may be made to piping installed by an individual on that individual's single family residential home, provided the piping system complies with the LP-Gas Safety Rules.
Source Note:The provisions of this §9.134 adopted to be effective February 1, 2001, 26 TexReg 947.