34 Pa. Code § 14a.37
If a supply tank larger than 10 gallons is provided with an opening in the bottom for use as a burner supply connection or as a drain, the tank shall be pitched toward the opening with a slope of not less than 1/4 inch per foot of length.
The provisions of this § 13.37 amended June 22, 1984, effective June 18, 1984, 14 Pa.B. 2131; transferred from 37 Pa. Code and renumbered as 34 Pa. Code § 14a.37, February 28, 2014, effective March 1, 2014, 44 Pa.B. 1233. Immediately preceding text appears at serial page (259931).
This section cited in 34 Pa. Code § 14a.31 (relating to scope); and 34 Pa. Code § 14a.161 (relating to general provisions).