Supervisory Switch Butterfly Valve is installed on upright axis to the pipeline, quarter turn (90 degree) operating disc, maintains 100% tight sealing in either direction through the EPDM robed into inner walls of the valve body.
Head loss is at minimum level through the double shaft design.
One-piece disc/stem design. The disc edge is spherically machined and hand polished to produce a bubble-tight shutoff, minimum torque, and longer seat life.
The disc/stem design inherently provides complete protection from particle entrapment and bacterial decay, protection that is required for sanitary performance.
Primary and secondary seals prevent line media from coming in contact with the stem or body.
Primary Seal is achieved by an interference fit of the molded seat flat with the disc hub. Secondary Seal is created because the stem diameter is greater than the diameter of the stem hole.
The valves tongue and groove seat design lowers torque and provides complete isolation of flowing media from the body. The seat also features a molded O-ring which eliminates the use of flange gaskets.
Non-corrosive, heavy duty acetal bushing absorbs actuator side thrust.
The position of the valve can be monitored with the use of the on-board tracking and electric circuitry
This avoids damage that could be caused by the valve in a closed position during a possible fire.
The valve can be controlled with lower torques through the gearbox mounted.
It can be used as a line shutoff valve or as a regional control valve.
Inner and outer surfaces are coated with minimum 250 microns fusion bonded epoxy
