UL Flow Switches
from ifm efector inc.
Reliable monitoring of liquids and gases in pipes. Variable process connection using adapters. Easy setting of the switch points for quick set-up. Robust stainless steel housing for use in harsh industrial environments. LED bar graph for indication of switch point and flow. Learn more. View other... [See More]
- Approvals: Underwriters Laboratory; ce, cul
- Operating Pressure: 4351
- Process Media Type: Liquid; Gas
- Media Temperature: -13 to 176
from ifm efector inc.
Reliable monitoring of liquids and gases in pipes. Variable process connection using adapters. Easy setting of the switch points for quick set-up. Robust stainless steel housing for use in harsh industrial environments. LED bar graph for indication of switch point and flow. From May 1st 2025,... [See More]
- Approvals: Underwriters Laboratory; ce, cul
- Operating Pressure: 4351
- Process Media Type: Liquid; Gas
- Media Temperature: -13 to 176
from ifm efector inc.
Measurement of flow and temperature at the same time. Optimized for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analog signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via buttons... [See More]
- Approvals: Underwriters Laboratory; ce, cul, ktw, iolink
- Operating Pressure: 725
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 212
from ifm efector inc.
Measurement of flow and temperature at the same time. Optimized for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analog signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via buttons... [See More]
- Approvals: Underwriters Laboratory; ce, cul, ktw, iolink
- Operating Pressure: 725
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 212
from ifm efector inc.
Measurement of flow and temperature at the same time. Optimized for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analog signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via buttons... [See More]
- Approvals: Underwriters Laboratory; ce, cul, iolink
- Operating Pressure: 1450
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 194
from ifm efector inc.
Measurement of flow and temperature at the same time. Red/green display for clear identification of the acceptable range. With switching output, analog signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via buttons or parameter setting via IO-Link. [See More]
- Approvals: Underwriters Laboratory; ce, cul, ktw, iolink
- Operating Pressure: 1450
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 194
from Solutions with Innovation, LLC
The F001 is a precision machined, piston type flow switch that provides unsurpassed durability and reliability. Its all brass or 316 stainless steel body is rated to 1000 psig with its internal piston the only moving part. Supplied with ¼" NPT inlet and outlet ports, the F001 can be factory... [See More]
- Approvals: Underwriters Laboratory
- Operating Pressure: 1000
- Process Media Type: Liquid
- Media Temperature: -40 to 300
from Gems Sensors & Controls
Flow Rate Settings: 0.75 GPM to 14.0 GPM. Port Size: 3/4". Primary Construction Material: Bronze. Setting Type: Adjustable. Provides accurate flow detection in water and oil with 1% repeatability. Flow settings on the adjustable version can be easily changed without disassembly. A shuttle by-pass... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE, FM
- Operating Pressure: 400 to 800
- Process Media Type: Liquid
- Media Temperature: -20 to 180
from ifm electronic gmbh
Air gap provided as absolute value. Precise values at all times thanks to pressure-compensated measuring principle. Enables zero gap and clogging detection. Self-cleaning measuring channel even resists purge air pressure. Easy teaching of thresholds with just one click. Convenient operation via... [See More]
- Approvals: Underwriters Laboratory; ce, cul, iolink
- Operating Pressure: 232
- Process Media Type: Gas
- Media Temperature: 14 to 140
from Litre Meter Limited
Positive displacement flowmeter with 316 stainless steel body, providing a pulse output. Nitronic SS, brass or carbon graphite rotor dependent on pressure and flow rate range. Hazardous area approved as standard. [See More]
- Approvals: ATEX; Underwriters Laboratory; Canadian Standards Association; European Committee for Electrotechnical Standardization; IECEx
- Operating Pressure: 20015
- Process Media Type: Liquid
- Media Temperature: -40 to 302
from Watts
Series FS-200-W Paddle-Type Flow Switches are used in commercial and industrial applications to accurately monitor the flow of liquid in pipelines servicing water systems, heating systems, air conditioning and processing installations for industrial and commercial applications. The flow switches are... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association
- Mounting: Insertion
- Process Media Type: Liquid
- End Fittings: In-line Threaded
from Malema Sensors
The M-100X Series is an extremely sensitive flow switch. This has been engineered to monitor vital sample flow parameters for instrumentation in process control and inert blanket gases. It is used as an auxiliary alarm monitor for flow meters and is ideally suited for applications when installed on... [See More]
- Approvals: Underwriters Laboratory; CE
- Operating Pressure: 1500 to 3000
- Process Media Type: Liquid; Gas
- Media Temperature: 104 to 149
from Solutions with Innovation, LLC
The F002 is a precision machined, piston type flow switch that provides unsurpassed durability and reliability. Its all brass or 316 stainless steel body is rated to 1000 psig with its internal piston the only moving part. Supplied with ¼" NPT inlet and outlet ports and a ½" NPTF... [See More]
- Approvals: Underwriters Laboratory
- Operating Pressure: 1000
- Process Media Type: Liquid
- Media Temperature: -20 to 300
from Gems Sensors & Controls
Flow Rate Settings: Liquids - Infinite Adjustment between 0.5 GPM and 20.0 GPM; Air/Gases - See chart. Port Size: 1/2" NPT. Primary Construction Material: Brass or Stainless Steel. Setting Type: Adjustable. These externally adjustable switches are ideal for protecting machine tools from coolant flow... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE
- Operating Pressure: 1000
- Process Media Type: Liquid
- Media Temperature: -20 to 300
from ifm electronic gmbh
Reliable monitoring of liquids and gases in pipes. Variable process connection using adapters. Easy setting of the switch points for quick set-up. Robust stainless steel housing for use in harsh industrial environments. LED bar graph for indication of switch point and flow [See More]
- Approvals: Underwriters Laboratory; ce, cul
- Operating Pressure: 435
- Process Media Type: Liquid; Gas
- Media Temperature: -13 to 176
from Watts
Series FS-204-W Paddle-Type Flow Switches are used in commercial and industrial applications to accurately monitor the flow of liquid in pipelines servicing water systems, heating systems, air conditioning and processing installations for industrial and commercial applications. The flow switches are... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association
- Mounting: Insertion
- Process Media Type: Liquid
- End Fittings: In-line Threaded
from Malema Sensors
The M-50X Explosion Proof Series low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. The flow monitors operate only when fluid is positively established. Features. Well suited for corrosive... [See More]
- Approvals: Underwriters Laboratory
- Operating Pressure: 3000
- Process Media Type: Liquid; Gas
- Media Temperature: 300
from Solutions with Innovation, LLC
The series F003A is an adjustable flow switch installed in line with the fluid movement to monitor flow rates from .75 to 4.0 and 2.0 to 8.0 GPM. The compact and durable design allows for ease of installation and the removable bonnet assembly provides easy access for cleaning without removal from... [See More]
- Approvals: Underwriters Laboratory
- Operating Pressure: 400
- Process Media Type: Liquid
- Media Temperature: -20 to 300
from Gems Sensors & Controls
Flow Rate Settings: Liquids 0.5 GPM to 5 GPM. Port Size: 1/2" NPT. Primary Construction Material: Polypropylene. Setting Type: Fixed. These slim, inline switches reduce pressure drop to a minimum. They incorporate a unique, dual-diameter, internal bore and piston configuration to minimize flow... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE
- Operating Pressure: 150 to 200
- Process Media Type: Liquid
- Media Temperature: 0 to 212
from ifm electronic gmbh
Measurement of flow and temperature at the same time. Optimised for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analogue signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via... [See More]
- Approvals: Underwriters Laboratory; ce, cul, iolink
- Operating Pressure: 1450
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 194
from Malema Sensors
The M-60X Explosion Proof Series low flow monitor switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system (universal mountable units are fitted with a reset spring). These switches are suitable for a wide... [See More]
- Approvals: Underwriters Laboratory
- Operating Pressure: 3000
- Process Media Type: Liquid; Gas
- Media Temperature: 300
from Gems Sensors & Controls
Flow Rate Settings: 0.5 GPM to 100.0 GPM. Port Size: 1" NPT to 2" NPT. Primary Construction Material: Bronze or Stainless Steel. Setting Type: Fixed. The FS-200 Series offers accurate flow detection, with 1% repeatability, over a broad range of flow settings and port sizes. Its durable construction... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE, FM
- Operating Pressure: 400
- Process Media Type: Liquid
- Media Temperature: -20 to 300
from ifm electronic gmbh
Measurement of flow and temperature at the same time. Optimised for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analogue signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via... [See More]
- Approvals: Underwriters Laboratory; ce, cul, iolink
- Operating Pressure: 725
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 212
from Malema Sensors
The operating principle is based on a free floating magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can... [See More]
- Approvals: Underwriters Laboratory; CE
- Operating Pressure: 200
- Process Media Type: Liquid; Gas
- Media Temperature: 220
from Gems Sensors & Controls
Flow Rate Settings: 0.1 GPM to 1.5 GPM. Port Size: 9/16" - 18 UNF. Primary Construction Material: Ryton ®. Setting Type: Fixed. More robust porting hubs offer better structural integrity. Molded cable grommet offers improved moisture protection. The FS-4 Series makes flow protection economical... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE
- Operating Pressure: 250
- Process Media Type: Liquid
- Media Temperature: 0 to 225
from ifm electronic gmbh
Measurement of flow and temperature at the same time. Optimised for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analogue signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via... [See More]
- Approvals: Underwriters Laboratory; ce, cul, iolink
- Operating Pressure: 725
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 212
from Malema Sensors
The M-50 Series low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. These switches are suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow... [See More]
- Approvals: Underwriters Laboratory
- Operating Pressure: 30 to 3000
- Process Media Type: Liquid; Gas
- Media Temperature: 170 to 300
from Gems Sensors & Controls
Flow Rate Settings: 0.75 GPM to 10.0 GPM. Port Size: 3/4". Primary Construction Material: Bronze. Setting Type: Fixed. Provides accurate flow detection in water and oil with 1% repeatability. Flow settings on the adjustable version can be easily changed without disassembly. A shuttle by-pass vane... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE, FM
- Operating Pressure: 400 to 800
- Process Media Type: Liquid
- Media Temperature: -20 to 180
from ifm electronic gmbh
Measurement of flow and temperature at the same time. Optimised for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analogue signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via... [See More]
- Approvals: Underwriters Laboratory; ce, cul, iolink
- Operating Pressure: 1450
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 194
from Malema Sensors
The M-55 low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. These switches are suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow monitors... [See More]
- Approvals: Underwriters Laboratory
- Operating Pressure: 80 to 3000
- Process Media Type: Liquid; Gas
- Media Temperature: 170 to 300
from Gems Sensors & Controls
Flow Rate Settings: 0.5 GPM or 2.0 GPM. Port Size: 3/4" or 1" IPS. Primary Construction Material: Clear PVC. Setting Type: Fixed. Designed for low cost flow/no-flow monitoring. This series is available with a clear, transparent PVC housing which is ideal for use where visual flow confirmation is... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE
- Operating Pressure: 50 to 120
- Process Media Type: Liquid
- Media Temperature: 120
from ifm electronic gmbh
Measurement of flow and temperature at the same time. Optimised for water, oils and air. Red/green display for clear identification of the acceptable range. With switching output, analogue signal and IO-Link. The process connection can be rotated for optimum alignment. Convenient operation via... [See More]
- Approvals: Underwriters Laboratory; ce, cul, iolink
- Operating Pressure: 1450
- Process Media Type: Liquid; Gas
- Media Temperature: -4 to 194
from Malema Sensors
The operating principle is based on a free floating magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can... [See More]
- Approvals: Underwriters Laboratory; CE
- Operating Pressure: 60
- Process Media Type: Liquid; Gas
- Media Temperature: 104
from Gems Sensors & Controls
Flow Rate Settings: Liquids - 0.1 GPM to 1.5 GPM; Air/Gases - see chart. Port Size: 1/4" NPT. Primary Construction Material: Brass or Stainless Steel. Setting Type: Fixed. This series of precision-calibrated switches provide reliable and consistent performance; repeatability is within 1%. FS-925... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE, FM
- Operating Pressure: 1000
- Process Media Type: Liquid
- Media Temperature: -20 to 300
from Malema Sensors
The operating principle is based on a magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can be used to... [See More]
- Approvals: Underwriters Laboratory
- Mounting: In-line
- Process Media Type: Liquid; Gas
- End Fittings: In-line Threaded
from Gems Sensors & Controls
Flow Rate Settings: Liquids - 50-300 cc/min.; Air/Gases - See Chart at Bottom of Page. Port Size: 1/4" NPT. Primary Construction Material: Brass or Stainless Steel. Setting Type: Fixed. These switches provide accurate detection of excessive or insufficient flow rates in such applications as:... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE, FM
- Operating Pressure: 1000
- Process Media Type: Liquid
- Media Temperature: -20 to 300
from Gems Sensors & Controls
Flow Rate Settings: 0.10 GPM to 1.50 GPM. Port Size: 1/4" NPT. Primary Construction Material: Brass, Stainless Steel. Setting Type: Fixed. Measuring only 1" x 2-3/4" (25 mm-70 mm), these compact switches are ideal for use where space is at a premium. Designed for use with water and oil, these... [See More]
- Approvals: Underwriters Laboratory; Canadian Standards Association; CE
- Operating Pressure: 1000
- Process Media Type: Liquid
- Media Temperature: -20 to 200