Flow Star Instrument Private LimitedFlow Star Instrument Private Limited


Measuring Instruments
We are a leading manufacturer, exporter and supplier of Rotameters and Manometers, which are avilable in acrylic body, metal frames and in varied sizes. Some of our products are displayed as follows:


FSA Series Rotameters
FSA Series Rotameters

FSA (Fluid Sealing Association) Series:

Our FSA series Rotameters are available in a variety of configurations such as Aluminum, stainless steel, Brass and PTFE.

Meter Body Acrylic
Float SS-316, PTFE, PVC
Wetted Parts S.S, PVC, PTFE & PP
O-Rings Neoprine, PTFE, Silicon
Scale Engraved on Body
Temp Rating 160° F
Connection Threaded BSP Female or Male
Accuracy of Full Scale Series 100 & 150-5%, Series 200, 300, 350-3%
Repeatability 0.50%
Rangeablility 10:01



FSB Series Rotameters

FSB (Fluidized Sand Bath) Series:

Our FSB series Rotameters are available in a variety of configurations such as Aluminum, stainless steel and PTFE.

Meter Body Acrylic
Float SS-316, PTFE, PVC
Wetted Parts S.S, PVC, PTFE & PP
O-Rings Neoprine, PTFE, Silicon
Scale Engraved on Body
Temp Rating 160° F
Connection Threaded BSP Female or Male
Accuracy of Full Scale Series 100 & 150-5%, Series 200, 300, 350-3%
Repeatability 0.50%
Rangeablility 10:01

FSB Series Rotameters


FSC Series Rotameters
FSC Series Rotameters

FSC (Forward Scatter) Series:

Our FSC series Rotameters are available in a variety of configurations such as Aluminum, PTFE and Brass.

Meter Body Acrylic
Float SS-316, PTFE, PVC
Wetted Parts S.S, PVC, PTFE & PP
O-Rings Neoprine, PTFE, Silicon
Scale Engraved on Body
Temp Rating 160° F
Connection Threaded BSP Female or Male
Accuracy of Full Scale Series 100 & 150-5%, Series 200, 300, 350, 400, 450-3%, 500, 600, 700-2%
Repeatability 0.50%
Rangeablility 10:01



FSD Series Rotameters

FSD (Full Scale Deflection)  Series:

Our FSD series Rotameters are available in a variety of configurations such as PTFE, stainless steel and Brass.

Meter Body Metal Tube
Float S.S. -316 or S.S.-304 
Indicator Housing Aluminium
Temp Rating 250° C
Pressure Rating 30 Kg. / Cm2
Accuracy ± 2% of Full Scale

FSD Series Rotameters


Glass Tube Rotameters
Glass Tube Rotameters

Our  are available in a variety of configurations such as Aluminum, stainless steel, Brass and PTFE.

Meter Body Powder Coated M.S. or S.S.-304
Float SS-316 or PTFE
Wetted Parts S.S 316, M.S.PTFE, PVC or PP
Packings Neoprene PTFE, or Silicon
Tube Borosilicate Glass
Scale Length 175-225 M.M.
Temperature Max Upto 200 degree C. depends on gland packing materials
Connections Flanged or Threaded
Accuracy /- 2% of full Scale
Repeatability 0.5%
Rangeablility 10:1



Small Glass Tube Rotameters

Our Small Glass Tube Rotameters are available in a variety of configurations such as Aluminum, PTFE, Brass and stainless steel.

Meter Body Powder Coated M.S. or S.S.-304
Float SS-316 or PTFE
Wetted Parts S.S 316, M.S.PTFE, PVC or PP
Packings Neoprene PTFE, or Silicon
Tube Borosilicate Glass
Scale Length Model FSGT 17-20=65mm & FSGT 21-30=140mm
Temperature Max Upto 200 degree C. depends on gland packing material
Connections 1/4" BSP 'F' & 1/2"BSP'M'
Accuracy /- 3% of Full Scale
Repeatability 0.5%
Rangeablility 10:1

Small Glass Tube Rotameters


Bypass Rotameters
Bypass Rotameters

Our Bypass Rotameters are available in a variety of configurations such as Aluminum, Brass and stainless steel.

Standard Range For Water At 20°C.
Series NW Maximum
FBPR-1 50 20M3/HR.
FBPR-2 80 36M3/HR.
FBPR-3 100 80M3/HR.
FBPR-4 125 125M3/HR.
FBPR-5 150 150M3/HR.
FBPR-6 200 320M3/HR.
FBPR-7 225 450M3/HR.
FBPR-8 250 550M3/HR.
FBPR-9 275 650M3/HR.
FBPR-10 300 800M3/HR.



Acrylic Inclined Manometers

A comprehensive range of inclined manometers is manufactured from clear, stable and tough acrylic block. Its main features are:

  • 1' Thick clear acrylic plastic block.
  • Metering tube & liquid chamber drilled & reamed in above block.
  • Engraved scale on milky white acrylic or anodized aluminum.
  • Knob for scale shifting & external zero adjustment of scale.
  • German spirit level
  • Nozzle type connections.
  • Mounting holes.

  • Acrylic Inclined Manometers


    Acrylic 'U' Tube Manometers
    Acrylic 'U' Tube Manometers

    A comprehensive range of acrylic manometers being manufactured from clear, stable and tough acrylic block are supplied as per the clients requirements. It's main features are:
    • 1' Thick clear acrylic plastic block.
    • Metering tube & liquid chamber drilled & reamed in above block.
    • Engraved scale on milky white acrylic or anodized aluminum.
    • Knob for scale shifting & external zero adjustment of scale.
    • Nozzle type connections.
    • Mounting holes.








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