49 Pa. Stat. § 32
From and after the passage of this act, no person, partnership or corporation furnishing material, supplies, fixtures or equipment for the erection, alteration, repair or remodeling of any building or structure, where such person, partnership or corporation furnished such material, supplies, fixtures of equipment under bailment lease, or conditional sales contract, or any other instrument or contract by which the person, partnership or corporation so furnishing such material, supplies, fixtures or equipment reserves the title to such material, supplies, fixtures or equipment, or the right to reacquire the title to same, shall have any right to file any mechanic's lien claim to secure payment for such material, supplies, fixtures or equipment.
49 P.S. § 32