The 522 Series resilient seated butterfly valves are available in 2"-20" sizes. Economical and designed to meet today's HVAC and industrial process requirements, they come standard with full lugged bodies, aluminum bronze discs, 416 stainless steel stems, and EPDM seats. The valves come assembled with electric, pneumatic, or manual operators and are ready to install.
High pressure rack and pinion pneumatic actuators available in double acting and spring return designs
High torque industrial grade electric actuators available in modulating or on/off configurations and are NEMA 4 rated with standard heaters
Hand polished and spherically machined valve discs
Unique tongue and groove seat design to seal with slip on or weld neck flanges
Bonded in seat design totally encases the valve interior to isolate the body from line media
Corrosion resistant, heavy duty acetal bushings absorb side thrusts
Stem packing gland is self-adjusting double U cup design and give positive seatin in both directions preventing external substances from entering the stem bore
