Article 9-12 LOW FLOW FIXTURES AND DEVICES This article is included in your selections. Sections: 9-12-1 Purpose. 9-12-2 Certification. 9-12-3 Specific low flow fixtures and devices required. 9-12-4 Flow restriction device required for water-cooled refrigerating systems. 9-12-5 Installation rebate. 9-12-6 Violation; Penalties.