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WAGS Valve Approved by NSF and Mass. Board At the April 3 meeting of the Commonwealth of Massachusetts Board of State Examiners of Plumbers and Gasfitters (Mass. Board) the WAGS valve gained approval under the Massachusetts Plumbing Code (CMR248 2.00). On February 21, 2002 NSF International certified that the WAGS valve conformed to the requirements of ANSI / NSF Standard 61 - Drinking Water System Components - Health Effects. NSF 61 covers devices (used to measure or control flow installed on a service line or building distribution system downstream of the water main and before endpoint devices), components, and materials used therein which are used in treatment / transmission / distribution systems, and are in contact with drinking water intended for human ingestion, drinking water treatment chemicals, or both.
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