Flow Governors

We are Manufacturer, Supplier, Exporter, Services Provider of Flow Governors and our setup is situated in Pune, Maharashtra, India. The Flow Governor is a protective device, installed downstream of the Flow Meter, to limit the flow rate through the Flow Meter, to the maximum Meter flow rate capacity. This becomes essential when the pump capacity is greater than the capacity of the Flow Meter or when a common pump is used for more than one Flow Meter.

Principle Of Operation

The Flow Governor consists of a body having an orifice, a spring balanced piston and a butterfly control valve. Variation in liquid flow across the orifice creates a differential pressure, which applies a downward or upward force on the piston. This in turn rotates the butterfly valve to restrict and maintain a constant rate of flow. The downward compression force on the piston is resisted by the spring tension, which is adjustable and enables accurate presetting of a constant flow rate.

Design Features
  • Low pressure drop
  • Adjustable flow rate
  • Compact and rugged Construction
  • A sensitive pressure differential orifice design
  • Single pump, multi-point gantry filling
  • High flow regulation for meter protection
  • Type : Variable area orifice
  • Size : 80 mm (3"), 100 mm (4"), 150 mm (6")
  • Flow Range : 1364 lpm for 80 mm (used with TL-03/04 or TLD-01/02)
    : 2046 lpm for 80 mm (used with TL-05/06 or TLD-03/04)
    : 2273 lpm for 100 mm (used with TL-07/08 or TLD-05/06)
    : 2955 lpm for 100 mm (used with TL-09/10 or TLD-07/08)
    : 2955 lpm for 150 mm (used with TL-11/12 or TLD-09/10) (Flow rate setting within ±20%) Max.
  • Working : 10.54 kg/cm2 Pressure


Temperature : Upto 700 C

End Connections : 150 Class, ANSI B 16.5, FF/RF

Mounting : Downstream of bulk meter

Materials Of Construction
  • Body : For 80 mm size - Cast Iron (Standard)
    Cast Steel ASTM A 216 WCB (Optional)
    For 100 mm size - Cast Steel ASTM A 216 WCB (Standard)
    For 150 mm size - Carbon Steel (Fabricated) (Standard)
  • Piston : Electroplated carbon steel
  • Butterfly Valve : Aluminium
  • Spring : Spring Steel
  • Other Wetted : Stainless Steel AISI 410 Parts
  • Seals : Nitrile