• Size range: 1" - 6"
• Pressure range: Full vacuum up to 150 psi
• Temperature range: -10°C +95°C
• Flange connections: Clamp connection, Butt weld, wafer style and various other connections threaded connection
• 316L and 304 Stainless Steel bodies with polished 316SS disc
• Range of seat materials including: Silicon, EPDM, Nitrile and Viton
• Anti-tamper padlocking facility on manual valves
• Combination dual or multi-positioned notch plate on manual valves
• USDA approved Powder Handling option
• Integral disc position indicator

Keystone Sanitary Stainless Steel Butterfly Valve is a universal valve for isolation and control, in the Food, Dairy, Brewing and Chemical Industries. The F250 (Imperial) and the F251 (Metric) Sanitary BFV's are designed to be easily automated with any quarter turn actuation package. We carry standard mounting kits for all of our Pneumatic and Electric actuator product lines. From the F.257 Vertical Stainless Steel Sanitary actuator and the F783E Electronic Control Head, to the Keystone F79U, Morin Series of actuation products.

Vertical Rotary Actuator
F257-065, -100, -140

• Double Acting or Spring Return
• Stainless Steel construction
• Field repairable 100 & 140 only
• Retained spring for safety
• Internally ported 100 & 140 only
• Modular mounting kits, changeable in-service
• High visibility position indicator, orDirect-mount Control Head
• Travel-stop options
• Proximity switch feedback