VFF2 Resilient Seated 2-Way Butterfly Valve

VFF2 2-way resilient seated, flanged butterfly valves provide compact, 2-position, and modulating control of hot water and chilled water-glycol solutions in HVAC systems. Valve sizes range from 2 to 20 inches. Valves with full-cut disks provide up to 175 psi close-off. These valve assemblies are shipped with factory-mounted electric or pneumatic actuators with a variety of control signal inputs. They are also available as non-actuated models with either lever or gear manual operators for use as shut-off and balancing valves. Spring return actuators are available in normally closed 2-way configurations.

• Bi-directional flow
• Modified equal percentages flow characteristic
• Extended neck for 2 inches of pipe insulation
• Nylon 11-coated, cast iron disks for corrosion resistance, reduced friction, and use of lower-torque actuators with larger valve body sizes
• Cast iron valve body polyester-coated for weather, chemical, ultraviolet, abrasion, and impact protection
• Stainless steel valve stem with close-tolerance internal double-D disk connection with no points for corrosion access
• Peroxide-cured EPDM resilient valve seat doubles as flange gasket
• Bubble-tight seat leakage at rated close-off
• Anti-condensate heaters standard with NEMA 4X and NEMA 4 actuators
• Declutchable override handwheel standard with NEMA 4X actuators, non-declutchable override handwheel standard with NEMA 4 actuators