• Dutco Tennant LLC, PO Box 233, Dubai, U.A.E.
Flow Control Valve - Diaphragm Type Sewage

Flow Control Valve Type is ideal for limiting the flow to a pre-determined maximum (via maintaining a continuous pressure differential across an orifice).

When the pressure differential is less than the set-point, the valve opens, allowing flow to meet pre-determined demand. At the desired maximum set-point, the pilot reacts to small changes in sensing pressure and controls the main valve position by modulating the pressure.

When the pressure drop across the orifice exceeds the set-point, the valve closes slightly, limiting the flow to the pre-set maximum. Adjusting the pilot setting permits the maximum flow to be changed in the field above or below the original point.


  • Accurately limits flow to a pre-set maximum
  • Easily adjustable flow limit
  • Paddle-style orifice plate included
  • Optional orifice plate housing

Typical Application

  • Isolation valve
  • Storage Tank
  • Standard paddle style orifice plate
  • Install between downstream flanges and connect pilot sensing to downstream tap in pipeline
  • Completed in field by others

Technical Specification

  • Valve Body Type : Globe Type/ Angle Type
  • Body : Ductile Iron ASTM A 536
  • Bonnet : Ductile Iron ASTM A 536
  • Available Sizes : 50mm – 1000mm
  • Stem : Stainless Steel 316
  • Seat Ring : Stinless steel 316
  • Diaphragm : EPDM
  • Strainer : Brass
  • Flow Limiting Pilot : Brass/Stainless Steel
  • Stabilizer : Brass/Satinless Steel
  • Orifiece Plate : Stainless Steel
  • Tubing & Fittings : Copper, Brass,Stainless Steel
  • Pressure rating : PN10,PN16,PN25
  • Coating : Non Toxic Epoxy