If a compressed gas or other pressurizing system is used in the malt or brewed beverage dispensing system, it shall be designed to preserve the normal flavor of the malt or brewed beverage and not introduce contaminants such as dust, water or oil, into the system.
40 Pa. Code § 5.53
The provisions of this §5.53 amended under section 207(i) of the Liquor Code (47 P.S. § 2-207(i)).
This section cited in 40 Pa. Code § 5.404 (relating to sales for on-premises consumption).