US lawMichiganRegulationsDepartment — Labor and Economic OpportunityBureau — MIOSHAR 408.17101 to 408.17163 — Part 71. Laundry and Dry Cleaning Machinery and Operations408.17129R 408.17129R 408.17129 Hydraulic safety.Last amended: 1979Year: 2026Length: 20 wordsOfficial source Cite as Mich. Admin. Code R 408.17129Rule 7129. A hydraulic system of piping, hose and their component parts shall have a designed safety factor of 4.PreviousR 408.17128NextR 408.17130