ASSE 1037-2015/ASME A112.1037-2015/CSA B125.37-15(R2020) pressurized flushing devices (PFDs) intended to flush water closets, urinals and other plumbing fixtures. This harmonized standard establishes unified performance requirements for the safe and sanitary operation of PFDs and specifies requirements for materials, design, methods of operation, test methods, and markings.