Crane ChemPharma & Energy recently obtained NSF-61 & NSF-372 certification of its Stockham® Butterfly Valves for potable water and lead-free service. Stockham Butterfly Valves offer positive bidirectional shutoff and automation in both gas and liquid service.
The NSF/ANSI Standard 61 ensures that a product is safe for use in drinking water and thereby meets the regulatory requirements for the USA and Canada, and often the testing requirement for several other countries.