Sight Flow Indicators

Installed into a pipe to provide a visual of verifying liquid flow for direction and flow rate.


Dwyer SFI-100 & SFI-300 Series MIDWEST Sight Flow Indicators

Dwyer SFI-100 & SFI-300 Series MIDWEST Sight Flow Indicators

The 100 and 300 Series offer threaded process connections, viewing windows, and bodies of brass or 316 SS. The 100 type has a single window with a rotating impeller, the 300 type has a double window with a rotating impeller, the 350 type has a double window with no moving indicator, and the 360 type has a double window with a flapper.


Dwyer SFI-300F Series MIDWEST Sight Flow Indicators

Dwyer SFI-300F Series MIDWEST Sight Flow Indicators

The 300F Series offer ANSI flange process connections, double viewing windows, and bodies of carbon steel or 316 SS. The 350F type has a double window with no moving indicator and the 360F type has a double window with a flapper. All the types feature a removable window for easy service and replacement of wearing parts.


Dwyer SFI-400 Series MIDWEST Sight Flow Indicators

Dwyer SFI-400 Series MIDWEST Sight Flow Indicators

Manufactured of quality materials and safety tested to assure long, dependable service at economical prices. The 400 Series offer threaded or ANSI flanged process connections, tube style viewing, and bodies of cast iron or 316 SS. Featured in the 400 is glass tube construction offering easy flow viewing from any angle.


Dwyer 500 Series Sight Windows

Dwyer 500 Series Sight Windows

Tough, tempered glass window resists chemical attack and abrasion. Seamless gasket assures perfect seal and is easily field replaceable. In addition to the standard brass body, Model 500 Sight Windows are also available in carbon steel or 316 stainless steel to suit a wide range of chemical compatibility.


Dwyer SFI-800 Series Sight Flow Indicator/Transmitters

Dwyer SFI-800 Series Sight Flow Indicator/Transmitters

Constructed of clear plastic enabling 360° viewing of the rotor for easy flow indication. 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.