40 Pa. Stat. § 853
Neither such insurance company nor its executive officers shall, directly or indirectly, be interested in the manufacture or sale of steam boilers or of any of the appliances connected with steam engines and boilers; they shall employ skillful and competent persons for the inspection of steam boilers, who, before entering upon their duties, shall be duly sworn or affirmed that they will not accept, for the performance of their duties, any money, gift, gratuity or consideration whatsoever, from any person or persons, other than the insurance company which employs them, and that they will not, directly or indirectly, be interested in the manufacture or sale of steam boilers, or of any of the appliances connected with steam engines and boilers.
40 P.S. § 853