STI flow switches are highly reliable devices utilized to sense the presence or absence of flow in horizontal pipelines. Disc actuated Model F50 switches are in-line type used for sensing clean liquids in 2 inch or smaller line sizes.
Measurement Principle:
The force of liquid flow through a valve body and against a flow disc causes it to lift out of the flow path. The attraction sleeve at the top of the disc assembly moves into the field of a switch magnet, attracting the magnet and actuating the switch.
Features:
No calibration required
Bronze or stainless steel construction
Process pressures to 1150 psi (69 bar)
Process temperatures to +750° F (+399° C)
Actuation on increasing or decreasing flow
In-line mounting
Applications:
Pump staging or failure
Pipeline flow detection
Valve failure
Pump inlet flow protection
Alarm on eye wash or safety shower installations
Options:
Available in bronze or 316 stainless steel
Float bodies for 3/4 to 2 inch pipe
Choice of dry contact, mercury or hermetically sealed switches
