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SFI-800 Series Polysulfone Sight Flow Indicators
The Series SFI-800 Sight Flow Indicator is a low cost, durable rotor style flow indicator with optional  Hall effect magnetic output packages from remote flow monitoring.  SFI-800 models are constructed of Polysulfone with excellent chemical compatibility, high pressure and  temperature ratings, and all wetted materials are FDA/NSF ratable for potable water applications.  Three output sensors are available for the SFI-800 Sight Flow Indicators adding remote flow monitoring  to local flow indication. All three packages can be easily installed onto an existing indicator body in the  field without any tools. Sensors can also be replaced in the field without removing the body from the  process line. Units are weather-tight for outdoor or wash-down area use.  
Specifications:  Wetted Materials: Polysulfone Body; White Polysulfone Rotor; 316SS Rotor Pin; 300 series SS thrust washers;  fluoroelastomer o-ring (NSF grade) Temperature Limits: -20 to 212°F (-29 to 100°C) Pressure Limits: 150 PSI (103.4 kPa)  Viscosity Maximum: 200 SSU  Weight: 3.35 oz (95g) Models/Range 800-.5-LF  1/2” NPT  0.5-6.5 GPM (1.9-24.6 l/m) 800-.5  1/2” NPT  2-20 GPM (7.6-75.5 l/m) 800-.75  3/4” NPT  3-35 GPM (11.4-132.5 l/m) Optional Output Modules: A-711 Pulsed Output Transmitter, 0-100 Hz A-712 Voltage Output Transmitter, 0-10 VDC A-713 Open Collector Switch, one normally open; one normally closed 
SFI-800 Sight Flow Indicator
SFI-800 Sight Flow Indicator Side View with optional output module installed
Optional Output Model