The paddle type SPDT WFS series are designed to provide excellent
performance where accuracy, reliability, and rugged construction are
required used in liquid flow lines carrying water or any fluid neither
harmful to brass and phosphor bronze nor classified as a hazardous
They can be wired to close one circuit and open a second circuit when
liquid flow either exceeds or drops below the adjusted flow rate.
The WFS series are recommended for liquid pressure and temperature
as mentioned below and must not be used on lines carrying liquids
below 0 C degree.
These series may be used on liquids with high salt or chlorine content
but is not for use in hazardous atmospheres.
They may be also used outdoors but must be protected from weather or
All series WFS flow switches are designed for use only as operating
Where an operating control failure would result in personal injury
and/or loss of property, it is the responsibility of user to add safety
devices that protect against, or supervisory systems that warn of control