7 Pa. Code § 59a.331
High pressure lines may be cleaned in place and must be constructed so that deadends, valves and the high pressure pumps can be disassembled for hand cleaning. New high pressure pumps must meet the current 3-A Sanitary Standard Covering Homogenizers and High Pressure Pumps of the Plunger Type.
This section cited in 7 Pa. Code § 59a.326 (relating to equipment and utensils).