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Introduction to the F-300


The F-300 Flow Meter is a pitot tube style flow meter designed to mount directly onto   water pipes. The F-300 Flow Meter has been the industry standard in the Aquatics market for over 50 years. The accuracy, simple design, easy installation, and affordable pricing make the F-300 a great choice for your water flow measurement needs.  

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Product Overview / Features of the F-300 Flow Meter 

  • Installs quickly. 
  • Fits pipe sizes 1”, 1.25”, 1.5”, 2”, 2.5”, 3”, 4”, 6”, and 8” for horizontal installation. 
  • Fits pipe sizes 1.5” and 2” for vertical upward or downward flow installation. 
  • Metric pipe sizes 32mm, 40mm, 50mm, 63mm, 75mm, 90mm, 110mm. 
  • Flow rates from 5 to 2,200 GPM on Schedule 40 pipe, and 4-1950 GPM on Schedule 80 pipe. 
  • Acceptable in outdoor locations in direct sunlight.   
  • One piece machined Acrylic body. 
  • Easy to read dual scale for schedule 40 pipe and schedule 80 pipe. 
  • Minimal straight pipe requirements for installation. 
  • NSF 50 Listed. 
  • Optional Flow Switch (F-300SL for 1” – 1.25”P, F-300S for 1.5” – 4”P) 
  • 1 Year Limited Warranty. 


The F-300 Flow Meter is perfect for Aquatics applications in commercial swimming pools, spas, and water parks.  The F-300 Flow Meter can be used be used in general industrial water processing. The F-300 can be installed on any existing Schedule 40 or Schedule 80 water pipe (also PN10, PN16 metric) where water is relatively clean and free of debris.  

Ordering Information and Product Matrix 

Flow meters must be ordered with a complete part number, specifying orientation and pipe size. A sample complete part number is F-30200P, indicating horizontal installation on 2” pipe.  

F-300 Flow meters are available in standard US Pipe sizes and Metric Pipe sizes. 

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Frequently Asked Questions

F-300 Introduction

  • What is difference between the F300 & R-300 models Can I use an R-300 in my commercial pool application and vice versa?

    The F-300 is designed for use in commercial pool & waterpark installations and is NSF listed. The R-300 is designed for use in residential pool installations only and is not NSF listed. It is best to select the appropriate model for the application.

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