Nilkanth Enterprise
Nilkanth Enterprise
Vishal Nagar, Ahmedabad, Gujarat
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Industrial Rotameter

Leading Manufacturer of water rotameter, by-pass rotameter, glass tube rotameter and metal tube rotameter from Ahmedabad.

Water Rotameter

Water Rotameter
  • Water Rotameter
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Approx. Price: Rs 1,250 / PieceGet Latest Price

Product Details:

BrandNE
Sapphire Float11-110 mL/min
Carboloy Float30-300 mL/min
Air Flow Range280 m3n/hr
Accuracy1-2% FS
Temperature121 deg C
Usage/ApplicationIndustrial

The rotameter’s operation is based on the variable area principle: fluid flow raises a float in a tapered tube, increasing the area for passage of the fluid. The greater the flow, the higher the float is raised. The height of the float is directly proportional to the flowrate. With liquids, the float is raised by a combination of the buoyancy of the liquid and the velocity head of the fluid.


With gases, buoyancy is negligible, and the float responds to the velocity head alone. The float moves up or down in the tube in
proportion to the fluid flowrate and the annular area between the float and the tube wall. The float reaches a stable position in the tube when the upward force exerted by the flowing fluid equals the downward gravitational force exerted by the weight of the float. A change in flowrate upsets this balance of forces. The float then moves up or down, changing the annular area until it again reaches a position where the forces are in equilibrium. To satisfy the force equation, the rotameter float assumes a distinct position for every constant flowrate. However, it is important to note that because the float position is gravity dependent, rotameters must be vertically oriented and mounted.

Application:

  • These meters with all steel and plastic fittings to eliminate corrosion completely. The meters are useful for measuring flow of air, common gases, water and many organic chemicals, excluding petroleum products. Applications include purging of gas lines, anaesthesia,laboratory instruments, leak detection, cable pressurization, industrial furnaces and chromatography etc
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By-Pass Rotameter

By-Pass Rotameter
  • By-Pass Rotameter
  • By-Pass Rotameter
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Approx. Price: Rs 6,750 / PieceGet Latest Price

Product Details:

BrandNE
Usage/ApplicationIndustrial
Accuracy+-2%
Rangeability71 of 51
Larger Pipeline Size50 NB to 450 NB
For High Flow8 to 1500 M/Hr

“NE” Make By Pass Rotameter as designed for measurement of flow rate of Liquid and gases in 2” NB or higher Size pipe sine. The complete assembly consist of carrier rings [orifice Flanges], orifice Plate, by-pass piping with Isolation valves & a Rotameter as indicator. The orifice plate is design on IS of BS specification.


These meters are selected for low cost measurement of high flow rates generally in the 2” and larger sizes. It provides linear measurements of fluid in conjunction with an orifice plate in the main line. The Rotameter is modified to include a range orifice which is sized so that the flow through the meter at the maximum pressure drops across the orifice plate in necessary to lift the float to the maximum position. Hence the flow through the range orifice is proportional to the instantaneous flow through the main orifice and so the bypass Rotameter measure main line flow.

Features:
  • Easy to maintain
  • On-line installation
  • Very low cost
  • Accessories: High & low flow Alarm solution

MOC (Material of Construction):
  • Orifice Plate: S S 316 Or PVC Or Teflon
  • Carrier Ring: S S 316 Or Mild Steel Or P P Or PVC
  • Pipe line: S S 316 Or G I (M.S) Or PVC
  • Wetted parts of Rota meter: S S 316 Or Mild Steel Or Teflon Lined, P.P.

Size Maxi Flow Rate In:
  • 25 NB 10 M3/hr
  • 50 NB 20 M3/Hr
  • 80 NB 36 M3/Hr
  • 100 NB 115 M3/Hr
  • 125 NB 125 M3/Hr
  • 150 NB 210 M3/Hr
  • 200 NB 320 M3/Hr
  • 250 NB 550 M3/Hr
  • 300 NB 880 M3/Hr

Data Required for Offer:
  • Service Name of fluid , Sp. Gr of Fluid at Operating Condition , Viscosity of Fluid at Operating Condition
  • Operating Temperature, Operation Pressure , Material of construction, Main Pipe Line’s ID , Flanges size & Details, Range i.e. maxi & min.
  • Flow rate Measuring, We reserve the right to modify the design & specification without any notice
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Glass Tube Rotameter

Glass Tube Rotameter
  • Glass Tube Rotameter
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Approx. Price: Rs 3,500 / PieceGet Latest Price

Product Details:

BrandNE
Model114
ApplicationIndustrial
Repeatability0.5 %
Temperature Rating-20 to +250 deg C
ConnectionsFlanged OR Screwed
Pipe Size15-100 NB

FLOWTECH Glass Tube Rotameter Area Flow Meters (Rotameters) are intended for general in line and By-Pass metering applications (i.e. for Gas & Liquid) where operating conditions are with the limitations of Glass metering tubes. These are the principle of Variable Area. The float moves freely up and down tapered borosilicate glass with fluid flow from bottom to top. The float takes up a position where buoyancy forces and the float weight are balanced in proportion to flow rate. The Vertical position of the float as indicated by scale is the measure of the instantaneous flow rate.


Features:

  • Simplified piping and reduced space requirements 
  • Permanent magnetic link between metering float and motion position transmitter 
  • Precision swaged metering tube
  • Heavy duty welded float and guide construction
  • Guide cartridges easily removable for cleaning
  • Provide with Electrical transmitter, flow indicator OR alarm


Other Details:

  • Enclosure: IP 55 OR IP 65 on request
  • Tube: 316SS, 316LSS, 304SS, Hastelloy ‘C”, Titanium
  • Float: 316SS, 316LSS, 304SS, Hastelloy ‘C”, Titanium
  • Indicator Box: ABS, Cast Al., SS
  • End Fitting: 316SS, 316LSS, 304SS, Hastelloy ‘C”, Titanium
  • Mainly used for measuring rated flow of liquid and gases
  • Available in C.S, SS-304, SS-316 Poly Propelene.P.T.F.E. Lined
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Metal Tube Rotameter

Metal Tube Rotameter
  • Metal Tube Rotameter
  • Metal Tube Rotameter
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Approx. Price: Rs 12,300 / PieceGet Latest Price

Product Details:

Model113
ApplicationIndustrial
Rangeability101
Accuracy+-2%
Scale Length90 degree
Pressure Rating40-250 bar
Allowable Fluid Temp-20 to 250 deg C

In comparison to the glass tube rotameters, metal tube rotameters are compatible with much higher temperature and pressure and render superior mechanical strength and durability.


Features:

  • No need for straight pipe section upstream
  • High accuracy, repeatability and linearity
  • Can be used for liquid, gas and steam
  • Low cost compared to other types
  • Ease of installation and replacement
  • High pressure compatibility
  • Chemical compatibility
  • Wide selection of connection types(Flange, PT, NPT, ANSI, JIS, etc.)
  • Wide selection of materials(306 SS, 316 SS, Metal, etc.)
  • Wide choice of options(Control valve, strainer, digital ouput, cooling fin, damper, heating jacket, etc.)
  • High accuracy, repeatability and linearity


Owing to their simplicity, low-cost but high-reliability nature, these meters have found applications in a wide variety of industries including but not limited to paper/fiber, steel, petrochemical, food/beverage, air-conditioning, water treatment, chemical, etc. industries. Even with the rapid growth of new technology meters such as ultrasonic, electromagnetic and Coriolis meters, this type is still one of our steady sellers.


All the meters are calibrated accurately before shipment and shipped with test and calibration report to ensure the accuracy of the meter. The scales are inscribed with easily visible marking and can use the unit of the customers choice(index, percentage, actual flow(cm3/h, SCFM, etc.))

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Sandip Patel (Proprietor)
A/1 , Tulsi Kunj Society, Behind Vaibhav Hall
Vishal Nagar, Ahmedabad- 380050, Gujarat, India



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