(7) Classified by Underwriters Laboratories, lncĀ® to comply with safety and health standards of Walsh-Healy Act Sections 50-204.8 Nozzle Pressure, and 50-204.10 Noise Level. . . also Williams-Steiger Occupational Safety and Health Act "OSHA" Section 1910.95 Noise Level and Section 1910.242(b) Nozzle Pressure (with maximum inlet pressure of 150 psi).