Firehouse Subs #10305

Backflow. an air gap between the water supply inlet and the flood level rim of the plumbing fixture / equipment / or nonfood equipment not at least twice the diameter of the water supply inlet and may not be less than 25 mm (1 inch). a backflow or backsiphonage prevention device installed on a water supply system shall meet american society of sanitary engineering (asse) standards for construction, installation, maintenance, inspection, and testing for that specific application and type of device. a backflow prevention device shall be located so that it can be serviced and maintained. a hose shall not be attached to a faucet unless a backflow prevention device is installed.

Utility line/duct installation. exposed utility service lines and pipes not installed in a way that does not obstruct or prevent cleaning of the walls and ceilings. utility service lines and pipes shall not be unnecessarily exposed on walls or ceilings in those areas listed in subsection (b) of this section. service lines behind counters used only for beverage preparation may be exposed on the inside counter walls if necessary for service and if kept to a minimum. if exposed in rooms or areas allowed in subsection (c) of this section, air conditioning / ventilation / heating ducts shall be of smooth rigid metal and designed with a circular cross-section.