Mueller Steam Specialty, a Watts brand, introduced the Series 90 butterfly valve, designed for commercial and industrial applications working with pipes from 2" to 40" and meeting high-performance specifications, especially for data centers, hospitals and educational institutions. The Series 90 high-performance butterfly valves are ideal for water supply applications in hydronic cooling and fire protection systems. The Series 90 complies with API 609 and MSS-SP-68 standards and is bubble-tight at 290 psi differential, enabling it to work with larger pipes up to 40" in diameter. Series 90 also boasts a double offset RPTFE seat designed for 500° F and a carbon steel body, also with a stainless-steel stem and disc. All sizes for Series 90 are rated for Class 150.