Search This Site

(Search by Product Type i.e. Level or Brand Name i.e. Walchem)

F-300 Pitot Tube Acrylic Flowmeters

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

F-300 Pitot Tube Acrylic Flowmeters

Pipe sizes 1″, 1¼″, 1½″, 2″, 2½″, 3″, 4″, 6″, 8″ 

Flow from 2 to 1900 GPM (8 to 7200 LPM)

Clamp-On - Insertion Mount


  • Model Variations

  • F-300 = Horizontal flow

  • D-300 = Vertical down flow

  • U-300 = Vertical up flow

  • Well suited for closed pipe installations

  • Easy to read dual scale (GPM / LPM), screen printed on both sides of the meter body

  • Acceptable for outdoor installations (direct sunlight okay)

  • Pitot Tube (impact tube) design makes it easy to install on existing pipe

  • One piece, machined acrylic meter body, annealed for added strength and chemical resistance

  • Included SS clamps and gasket seal

  • Standard and Low Flow options available

  • For use on PVC or Copper Pipes (refer to literature)


    Pipe Sizes: Horizontal Installation: 1", 1¼", 1½", 2", 2½", 3", 4", 6", 8"

    Vertical Installation: 1½", 2"

    Max. Working Pressure: 150 PSI (10.3 bar) @ 70°F (21°C)

    Max. Fluid Temperature: 190°F / 88°C @ 0 PSI

    Full Scale Accuracy: +/- 10%

    Meter Body Material: Acrylic

    Gasket Material: Neoprene

    Float Material: 316 SS (PTFE low flow units)

    Connection Type: Saddle

    Pipe Capability: PVC Schedule 40 and Schedule 80 (12% higher reading on sch 80 pipe)

    Copper Tube Type “K” and “L”

    Approx. Shipping Weight: 1” to 4” Pipe: 1 lb. (.454kg)

    6” and 8?” Pipe: 2 lb. (.907 kg)

    NIST Certificates Optional

Flow Ranges

Horizontal Pipe Installation

Tech. Data Sheet (US) (PDF) (PN 85000-071)
Tech. Data Sheet (METRIC) (PDF) (PN 85000-070)

Vertical Pipe Installation

Tech. Data Sheet (US) (PDF) (PN 85000-071)
Tech. Data Sheet (METRIC) (PDF) (PN 85000-070)

US PVC (ASTM – D-1785), Copper Type “K” or Type “L”, Metric PVC Pipe (DIN 8062)

Note: for more metric model numbers, download metric datasheet 85000-070.

Flow Sensor Accessory

Why do you need a Flow Switch?
Is your recirculation pump working?

Is your recirculation system at the correct flow rate?

Is your chemical pump injecting into a stopped system?

Is your filter clogged?

How Does it work?
Optional Flow Switch / Sensor is designed to detect Flow / No Flow.
A rare earth magnet is located within the red PVDF float of the new F-300 flowmeters. When the magnet passes through the Alarm Trigger Zone (Hysteresis) of the Sensor Accessory, the built-in contact closure switch sends a signal to external devices.
Note: Two alarms can be placed onto one meter to obtain both ‘Flow Switch’ and ‘Flow Sensor’ capabilities.

Tech. Data Sheet (US) (PDF) (PN 85000-071)
Tech. Data Sheet (METRIC) (PDF) (PN 85000-070)
Instruction Manual (PDF) (PN 80000-577)


About Us

Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


Our Products

Dataloggers, sensors, pumps, recorders, hand held instruments, flow instrumentation, level controls, valves, instrumentation, containers, tanks, transmitters, data loggers, digital indicators, mixers and agitators, pressure intrumentation, analyzers and controllers for a variety of industrial applications such as water quality, pH/ORP and more.

Website Content

Water Analyzers and Controllers, Wireless Products, Corrosion Monitoring Equipment, Cooling Tower and Boiler Controllers, a wide variety of Pumps, Valves, Dataloggers and Recorders, HVAC, Instrumentation, Skids and Systems, Containers and Tanks from world leading manufacturers are products you will find on this site.

Get in Touch