Due to the torque required for operating DN350 to DN900 (14” to 36”) butterfly valves are not suitable for lever operation. These sized valves are however all available with gearbox operated mechanisms.
Valve comprises:-

T-mex wafer type lever operated butterfly valves have a coated cast iron body, EPDM seal and 304 stainless steel disc and stem.

The cast lever locates over the stem and is held in place using a stainless steel bolt.

To deter unauthorised operation of the valve the lever can be readily removed.