Kates FC Automatic Flow Rate Controllers

Kates Flow Rate Controllers Applications are worldwide in every major industry.



*Below specifications represent standard design please inquire for special materials or performance ratings

           >   Materials of Construction: 316 SS Standard; Hastelloy, PVC, Alloy 20, Monel
           >   Seals: PTFE, Buna, Viton
           >   Maximum Working Pressure: 6,000psi (2500#ANSI)
           >   Accuracy: +/- 1.5% of Setpoint
           >   Repeatability: +/- 1.5% of Setpoint
           >   Turndown Ratio: 25-1 Nominal           
           > Response time: Instantaneous           
           >   Connections: FNPT, ANSI Flanged, Sock Weld, Butt Weld

Typical Applications

Mechanical Seals - Instrument Purge - Header Systems - Pump Seals - Batching - Blending - NOX Abatement - Reverse Osmosis - Nitrogen Blanketing - O2 Generation - Fountain Control - Waste Water Polymer - Heat Exchangers - Purge Oil - Quench Gas - Irrigation - Deicing - Bottling Production - Food Processing - Test Stands: Dynamometer - Fuel - Glycol

How It Works

The flow rate through an orifice is proportional to the size of the restriction and the differential pressure across it. Regardless of upstream or downstream pressure fluctuations, the internal regulating valve will maintain a constant pressure drop across the adjustable orifice to deliver the set flow rate. In gas applications, variations in upstream pressure and temperature should be minimized due to the compressibility of gases and the corresponding changes in density.

P1=P2 + Spring Force

For example; if supply pressure (P1) increases, the resulting momentary pressure imbalance immediately moves the impeller downward. This action restricts the valve ports thus increasing orifice backpressure (P2), restoring differential pressure and the flow rate to the original settings. The unit will respond equally as well to an upset in outlet pressure (P3).


Did you know???

It is rather ordinary for us to come across a Kates controller in the field still functioning after 40, 50 or even 60 years.
Kates Diagram