Model F50 disc-actuated mechanical flow switch

Magnetrol® flow switches are highly reliable flow control solutions utilized to sense the presence or absence of flow in horizontal pipelines. Disc-actuated Model F50 switches are in-line type used for sensing clean liquids in 2 inch or smaller line sizes.

Technology

Mechanical flow switches

F10: Force of liquid or gas flow against a vertical flow vane mounted in a line causes the vane to pivot to a horizontal position, moving an attraction sleeve into the field of a switch magnet. This pulls the magnet toward the sleeve and actuates the switch.

F50: The force of liquid flow through a valve body and against a flow disc causes it to lift out of the flow path. The attraction sleeve at the top of the disc assembly moves into the field of a switch magnet, attracting the magnet and actuating the switch.
Mechanical Flow Switch
  • Features
  • Applications
  • Operating principle
  • Approvals
  • Downloads

Settings

  • No calibration required
  • Bronze or stainless steel construction
  • Process pressures to 1150 psig (79 bar)
  • Process temperatures to +750°F (+400°C)
  • Actuation on increasing or decreasing flow
  • In-line mounting
  • Bodies for flow lines from ¾” to 2”

Options

  • Dry contact or hermetically sealed switches
  • Actuation flow rates from 0.8 to 24.8 gpm

The rate of flow through the valve body raises or lowers the disc. This in turn raises or lowers the magnetic sleeve, within its sealed non-magnetic barrier tube. On an increasing flow rate, the magnetic sleeve rises into the field of the permanent magnet, located outside the barrier tube, actuating the attached switch mechanism. When the flow rate drops, below the rate for which the flow disc is calibrated, a reversal of this action occurs.
ATEX Ex d, Ex ia
CCOE Ex d
CSA XP
FM XP
EAC (GOST)
Ex d, Ex ia
IEC Ex d, Ex ia
Inmetro Ex d
Korea
Ex d 
NEPSI
Ex d

Other approvals are available. Consult factory for more details.

  • Approvals and Certificates
    • ATEX Ex d Certificate - Mechanical Switches
    • FM Certificate - Mechanical Switches - US
    • IECEx Certificate - Mechanical Switches
    • FM Certificate - Mechanical Switches - Canada
  • Instruction Manuals
    • USA Models F10 - F50 Flow Switches I&O Manual
    • English Model  F50 Flow Switches I&O Manual
  • Product Catalogs
    • USA Models F10 - F50 Flow Switches Product Catalog
    • English Models F10 - F50 Flow Switches Product Catalog
    • French Models F10 - F50 Flow Switches Product Catalog
    • German Models F10 - F50 Flow Switches Product Catalog
    • Italian Models F10 - F50 Flow Switches Product Catalog

Related Articles

October 15, 2025

AMETEK Magnetrol USA LLC Appoints TechStar LLC as Exclusive Channel Partner for Oklahoma

March 28, 2025

New Partnership Serving The U.S. Midwest Region

March 10, 2025

The New Old-Fashioned: Enhancing Traditional Level Measurement Techniques

February 24, 2025

Cut Monitor Technologies and Factors that Affect Their Performance

February 12, 2025

Plugged Chute Detection

January 20, 2025

Why Drexelbrook's Level Technology Stands Out Universally

November 7, 2024

BrightTEK™ – Transforming Remote Monitoring and Industrial Efficiency

October 23, 2024

Maximize ROI with Drexelbrook® branded Water Cut Meters: An Investment That Pays Off

October 10, 2024

Why Mechanical Instruments Remain Essential for Industrial Level Measurement

September 23, 2024

Case Study: Not All Guided Wave Radar Transmitters are Created Equal

Do you want personal advice for your specific control process?

Contact us directly or reach out to your local AMETEK Level Measurement Solutions representative!

FIND MY LOCAL REPRESENTATIVE