The NS series floating ball valves and NS series butterfly valves from A-T Controls are certified to meet the requirements of NSF 61 (Drinking Water System Components–Health Affects) and NSF 372 (Drinking Water System Components–Lead Content).
This means that A-T Controls NS series valves are certified for use (by Underwriters Laboratory) in water treatment, water purification, potable water, reverse osmosis, desalination and water distribution systems and conforms with North American lead content requirements for “lead-free” plumbing.
The valves hold CRNs (Canadian Registration Numbers). The company advises users the search bar on its site to access the CRN certificates with the term “CRN”.
Butterfly valves are available in sizes 2 to 24 in. and have Class 150 wafer or lug flanges. Ball valves are available with threaded, socket weld, butt weld, Class 150, and Class 300 end connections.