The Keystone AR1 and AR2 are resilient seated Butterfly Valves. The Keystone AR1 and AR2 are suited for many applications such as water filtration, cooling water systems, food and beverage, air systems, mining and bulk product handling.
Features
Triple function resilient seat helps provide bi-directional drop-tight shut-off, designed to totally isolate the valve body and stem from the line media
Molded-in O-ring seat design serves as flange seals, eliminating the need for gaskets between the flanges and the Valve
Unique dovetail seat retention design allows for convenient and economical field replacement
Superior one-piece through shaft design provides high strength and positive disc control
Internal shaft seal is designed to prevent external media from entering valve and it also adjusts for pressure and shaft rotation
Heavy-duty, corrosion resistant top bushing delivers upper stem support, absorbs actuator side-loading and extends valve cycle life
Polished disc edge helps ensure optimal performance and maximum seat life
Stainless steel torque plug (2″ to 12″), disc screws (14″ to 20″) and taper pins (24″ to 36″) provide positive leak-proof connections while allowing for quick and easy disassembly
One-piece body with extended neck allows clearance for flanges and insulation
Each Valve is factory-tested to 110 percent of the manufacturers pressure rating
