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FlowVis FVJ-R 2" - 2.5" Retrofit Flow Meter

List price: $292.10
You save: $12.11 (4%)
In stock
Price in points: 5600 points
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Quick Overview

FlowVis® is the most advanced, affordable, and reliable precision flow meter designed specifically for pools, spas, fountains, and water features. Ingenious in concept and flawless in operation, FlowVis® is a revolution in reliable flow measurement.

FV-J-R 2" or 2.5" 40 GPM Retrofit for existing Jandy® 7305 check valve body

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FlowVis® is a revolutionary, patented solution for accurate and reliable fl ow rate measurement in fresh water applications such as swimming pools, spas, fountains, water features, irrigation systems, well water and solar systems. A FlowVis® model also exists for Flotation Tanks and where the Specifi c Gravity has been raised to 1.25 by adding Epsom Salts. Using a design that is based on 'mass fl ow' principles, the FlowVis® provides many benefi ts that include:

  • Ease of installation without the need to have 15x of straight pipe
  • Installation fl exibility that allows orientation in any position, e.g., horizontal, vertical or even upside-down
  • Long life without sticking fl oats or paddle wheels
  • Combined Flow Meter and Check Valve in all models except FV-C-S, FV-C-Saline, FV-3, FV-L-DN80, FV-4 and FV-L-DN100.


As fl ow increases, the check valve or safety fl apper moves forward toward its fully open position. The fl apper's angular position is directly related to fl ow rate through the valve body / tee. A calibrated scale on the valve's lid provides a highly accurate reading of the fl ow rate.


  • Installation flexibility; installs horizontally, vertically, or even upside-down
  • Can be installed right next to other plumbing fittings such as elbows with no effect on accuracy
  • ‰¥97.9% across the entire model range
  • NSF 50 Level 1 for eight different FlowVis® models
  • Doubles as a check valve (1.5", 2", 2.5" models)
  • Clear, easy-to-read scale in GPM or optional LPM with key velocity points (FPS)
  • Installs quickly and easily with no calibration required
  • Manufactured in the USA
  • 15-year design life, 3-year warranty
  • Models available for Metric pipe sizes from DN40 to DN100
  • The industry's most respected and reliable flow meter


Average accuracy:

  • 97.9% between 10 - 90 GPM (1.5" model)
  • 97.9% between 10 - 110 GPM (2" & 2.5" model)
  • 98.15% between 90 - 220 GPM (3" model)
  • 98.7% between 160 - 300 GPM (4" model)

Warranty: 15-year design life, 3-year warranty
Approvals: NSF 50 (FV-C, FV-3, FV-4, FV-C-S, FV-C-Saline models)
Head losses: Please refer to chart in product brochure


NOTE: Product images are for illustration purposes only and may not exactly match the actual product due to seasonal model, color or design changes. When shopping for parts we strongly recommend to check the SKU or "Part Number" which is listed on each product page. If you are unsure whether this is the correct product or need assistance please contact us.