Butterfly Valve

SERVICE RECOMMENDATIONS
Soft seated butterfly valves are designed for general applications such as on-off, throttling
and isolation in residential, commercial and industrial piping systems. They are well
suited for control of wafer, steam, air, oil and gases. The seat design is especially well
suited for vacuum service to 28" Hg and high velocity service.
FEATURES
The dual durometer seat is made of a highly wear resistant elastomer with a phenolic
backup ring. This combination provides a soft, elastic seat which will not collapse under
vacuum or high velocity service and eliminates the need for flange gaskets. The stem
seals consist of a primary seal between the spherical disc hub and the spherical seat
hub. The secondary seals are O-rings at the top and bottom of the stem to retain lubrication
and prevent atmospheric corrosion. The one piece stem is blowoff proof.
These valves can be furnished in a variety of trim materials. Ten position handles are
available for manual operation as well as a gear operator with handwheel. Pneumatic,
hydraulic or electric actuators with solenoids, positioners and limit switches can be specified
for automated operation.
ISO mount on 2"-36". Double D shaft on 2"-8". Keyed shaft on 10"-36".