Anti-Vortex-NFPA-22-Compliance-Diagram_1200x630

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Figure portraying photographs and a diagram of anti-vortex assemblies and their compliance with NFPA 22. The listed non-compliant examples do not comply with NFPA 22 due to improper orientation or use of non-compliant parts such as short-radius elbow joints. Source of photograph of top left anti-vortex fitting: intellectual property of Water Storage Tanks, Inc. Source of the top left diagram: 2023 Edition of NFPA 22 Standard for Water Tanks for Private Fire Protection. Source of photographs of bottom two short radius elbow anti-vortex fittings: unknown (may be subject to copyright).