The Beaver F21–F24 Butterfly Valve is a high-performance valve with a double-offset geometry. In this design, the stem is behind the disc (first offset) and slightly off the pipe centreline (second offset). This minimises the disc’s contact with the seat during opening and closing, resulting in less wear.
This is a highly reliable valve used for on/off or modulation in critical services in chemical and petrochemical, power and utilities, and hydrocarbon processing and storage applications.
The valve comes with two seat options: wear-resistant soft seat, which offers bubble-tight zero leakage, and temperature-resistant metal seat, which has an allowable leakage rate. It’s available with a wafer or lugged body design in Class 150 and 300.
F22 (Lugged Class 150)
F23 (Wafer Class 300)
F24 (Lugged Class 300)
Duplex stainless steel
Austenitic stainless steel