California Code
ARTICLE 3 - Mobile Water and Wastewater Tanks
Section 114223.

114223. A fitting with ā€œVā€ type threads on a water tank inlet or outlet shall be allowed only when a hose is permanently attached.

(Added by Stats. 2006, Ch. 23, Sec. 2. Effective January 1, 2007. Operative July 1, 2007, by Sec. 3 of Ch. 23.)