Item: Series 20/21 Resilient Seated Butterfly Valves
The Series 30/31 is built to meet the stringent requirements for many of today’s applications. Availiable in wafer or lug style body with unique features that results in longer service life, easy parts replacement, and interchangability of components. The unique Double-D Disc/Stem connection eliminates exposure of the stem and stem reteThe Series 20/21 is built to meet the stringent requirements for many of today’s applications. The 2-piece wafer or lug style body allows for easy assembly and maintenance. The 1-piece Disc/Stem allows for greater Cv and pressure recovery.ntion componets to the line media. The unique tougue-in-groove seat design provides for easy replacement and are self-sealing between flanges. Specifications: • Size Range: 1" - 20" (25mm - 500mm) • Body Style: Wafer, Lug • Temperature Range: -20°F to 400°F (-29°C to 204°C) • Pressure Ratings: Bidirectional Bubble-tight Shutoff: 150 psi (10.3 Bar) • Body (CWP): 150 psi (10.3 Bar) • Body Materials: Cast Iron, Ductile Iron, Carbon Steel, Aluminum • Disc Materials: Stainless Steel, EPDM Molded over SS, BUNA-N Molded over SS • Stem Materials: Stainless Steel, Monel K500 • Seat Materials: BUNA-N, EPDM, PTFE Lined EPDM, FKM* Polyurethane • Applications: Sanitary Service, Mildly Corrosive, Toxic Media
