FlowVis flow meters are distributed by Kennett Pool Products, please contact us for more information.

Know the Flow

FlowVis™ is a revolutionary, affordable, and highly accurate Flow Meter that guarantees you will Know the Flow.

Ingenious in concept, FlowVis™ has undergone exhaustive testing and calibration to ensure long life, accuracy, and repeatability. No other Flow Meter at this price point comes remotely close to its +/- 2% accuracy.

FlowVis™ is more than a Flow Meter; it is also a fully functioning Check Valve. As flow increases and decreases, the Check Valve's flapper swings within its range of motion. A specifically designed calibration spring, indicating arm, and an extended height valve body lid, constitute the fundamentals of the FlowVis™ design concept.

Saving energy using variable speed pumps is only possible if you know the flow. Setting the pump's speed without an accurate measurement of flow is akin to driving a car without a speedometer. Too high uses more power than necessary and too low results in a dirty pool.

* Accuracy: +/- 8 LPM from 0 to 400 LPM


FlowVis™ is available in two configurations:

1. A retrofit kit that installs to a pre-existing Jandy or Praher 50mm x 63mm Check Valve assembly

2. A complete pre-assembled Check Valve assembly with FlowVis™

Unlike other Flow Meters, the position in which FlowVis™ is installed (horizontal, vertical or relative to elbows and tees), has virtually zero effect on its accuracy.

Save Dollars, Save Energy

• FlowVis™ provides a precise, easy-to-read fl ow rate
• Maximize energy savings by slowing the pump to its lowest required speed for pool sanitation
• Allows precise and repeatable valve positioning for perfect water feature operation


• No plumbing restrictions for precise fl ow measurement. Can be installed next to elbows, tees, etc. with little or no degradation in performance.
• Can be installed in any position
• Two options - 1) retrofi t kit for existing Jandy or Praher 50mm x 63mm Check Valve* or 2) a complete valve assembly with FlowVis™.
• Consumes less plumbing space than individual Check Valve and Flow Meter combination

Pipe Size, Flow Range, and Model Options

Retrofi t kit for
existing Jandy or Praher Valve
Retrofi t kit for
existing Jandy or
Praher Valve
Complete FlowVis™ including Valve Body Complete FlowVis™ including Valve Body Pipe Size Model
X       50mm by 63mm FVJ-R
  X     40mm FVJ-R-15
    X   50mm by 63mm FV-C
      X 40mm FV-C-15

NOTE: When used on 40mm piping, installer will be required to provide and fit quantity two, 50mm to 40mm reducing bushings.
What makes FlowVis™ different?

Pool installers, owners, and operators finally have a Flow Meter that they can rely on. Accuracy, reliability, and longevity are key among a list of unique features that include:

• Combined functionality of Flow Meter and Check Valve

• Accuracy of +/- 2%

• NSF 50 pending

• Installation flexibility - far less space required than other Flow Meters. No requirement for 10x
clear pipe diameter before and 5x after. Install horizontal, vertical, or even upside down.

• Clear, easy to read scale in GPM with key velocity points (FPS)

• Installs in minutes

• No calibration required

• Unique design results in maintained accuracy even with entrained air caused by suction leaks

• Manufactured in the USA

• 5-year breakage warranty

• Pressure tested to >50psi

• Design life of 15 years with spring replacement every 7.5 years

• Less than 1 psi pressure drop across FlowVis™

• Consumes less than 0.2% additional motor power over having no check valve, e.g., 3 watts on a 2 HP pump.

• Can be used on 80mm pipe if flow rate is 400 LPM or less



Built to Last

FlowVis™ is built to last. It's robust, yet unobtrusive design means that unlike competing Flow Meters, FlowVis™ won't get kicked, tripped over, or broken. In fact, we're so confident in the durability of FlowVis™ that the product has a 5-year warranty on breakage!

Unlike Pitot tube / Rotameter style devices, FlowVis™ will not stick, bounce, or provide inaccurate readings of flow. There are no saddle clamps to corrode, flat rubber seals to deteriorate, or small holes to become blocked.


Kennett Gas Services Pty Ltd
PHONE 0418 141 561
Adelaide Websites by Redbax