Watts BF03-121 Series lug-style butterfly valves are employed in fluid control applications to provide a reliable shut-off and flow control solution in HVAC, water treatment and industrial processes. The valves' design allows for easy installation and maintenance due to their lug-style connection. They are particularly suitable for applications requiring efficient flow control, low-pressure drop and reliable sealing. These butterfly valves have lever handle that allows manual operation for quick and easy control. They are equipped with EPDM seats to enhance sealing efficiency and ensure a reliable shut-off. These butterfly valves feature ductile iron / iron construction for durability and resilience, making them suitable for handling potable water. They operate at pressures up to 200 psi and are available in inlet sizes of 2, 2-1/2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20 and 24 inches.