I/Q Valve


           > Materials of Construction: 316 Stainless Steel
           > Seals: PTFE, Buna, Viton, others available
           > Flow Range: as low as 0.02 to 600 gpm
           > Maximum Pressure: 3600 psi
           > Maximum Temperature: 400° F (1500# ANSI) norm-spec. available
           > Accuracy: ± 1-1/2% of setpoint
           > Repeatability: ± 1/2% of setpoint
           > Response Time: Instantaneous
           > Turndown Ratio: 25 to 1 (average)
           > Connections: FNPT or ANSI Flanged, other available
           > Operator: Either Nema IV or Nema VII Enclosures Standard
           NOTE: Specials are available. Contact factory for details

Materials of Construction:

All Metal Wetted Parts:
     316 Stainless Steel

Other Available Materials
     Hastelloy, PVC
     Alloy 20, Monel

Typical Applications

Water injection for oil fields, Glycol / Water blending, Temperature control, NOX water injection, Blending systems, Aircraft de-icing, Natural gas, Filtration systems, Instrument purge systems, Pump seals, Hydrogen systems, Nitrogen blanketing, Automated hydraulic cylinder speed control, Stain blocker coatings of fabrics, and hundreds more.

How It Works

Regardless of pressure fluctuations, the Kates I/Q valve will control the flow rate proportional to the 4 - 20 mA input. Flow output is perfectly linear to signal input. By internally controlling the differential pressure across an adjustable orifice, flow control is maintained to within 1-1/2% of setpoint.

Each valve is custom built to customer specifications and application requirements. The I/Q valve is shipped completely assembled and tested and requires no field calibration. It is provided with flow data for field personnel to tune their instruments to the I/Q output. The valve is flow tested at 33 different operating settings to ensure the accuracy of the system.


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