By Pass Glass Tube Rotameter

We are the leading manufacturer supplier, exporter of By pass glass tube Rotameter in Nashik, India. Our range is widely acknowledged for their accuracy, reliability and long service life. Our range comes with various accessories such as DP regulator, panel mounting clamps and high & low flow alarms. These products from our side are
suitable for purging or low flow rate of air or liquid measurement. 


  • Heavy duty design 

  • Easy to replace

  • Powder coated finish 


  • Scientific laboratory

  • Research centres

  •  Chemical industries


  • Pressure Ratings: 40 Bar

  • Temperature Ratings: -20?C to 250?C

  • Connections: Flanged or Screwed

  • Suitable for larger pipeline of 50 NB to 450 NB

  • The flowrate through the rotameters is proportional to the pressure drop across the orifice plate

  • Available in SS-316 / SS-304/ P.P material

  • Accuracy = 2% FSD

  • High & low flow switches or request

Operating Principle 

  • Differential pressure ‘P’ is created in the main flow by providing an Orifice plate in the main pipeline.

  • Because of this ‘P’ a nranch of flow moves through By-pass line provided across the orifice plate from up-stream side to down-stream side of the Orifice Plate.

  • Additional Range Orifice plate is provided in the By-pass line which is designed such that flow through range Orifice plate flows in proportion with the flow through main orifice plate.

  • Hence by measuring the flow from bypass line we can estimate the flow from Main pipe line

Standard Features 

  • Easy to Maintain

  • On - Line Installation

  • Most Economical

  • Pipe Size - 40 NB to 300 NB

  • For High Flow - 8M / Hr. To 1500M / Hr.

  • Two tone powder coated excellent finish

  • No threads, No leakage, Avoids corrosion

  • Range-ability - 1:10 2 : 10

  • Heavy duty design with maximum visibility

  • Various options for material of construction of wetted parts .