Insertion

McDonnell & Miller FS-8 weatherproof paddle flow switch

• Brass body
• Supplied paddles (316SS): 1, 2, 3 & 6"
• Output: SPDT microswitch, mains rated (120»240Vac)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Process connection: R1" (BSPT) & 1" NPT
• Pipe sizes: 1" & larger
• Temperature: 0 » 107°C
• Pressure: up to 11bar
• Stocked models include: FS8-W (p/n: 120601) & FS8-WJ (p/n: 120602)

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Gems Sensors FS-550 + FS-550E paddle flow switch

• Brass or 316 stainless steel body
• Patented cam design, senses bi-directional flow
• Process connection: 1”NPT (FS-550) or R1" (BSPT FS-550E)
• Pipe sizes: 1¼” & larger
• Output: SPDT 20VA (reed switch)
• Pressure: 55 bar (depends on model)
• Temperature: -20 » 80°C (depend on model)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Stocked models:
  • FS-550: 29608, 29609
  • FS-550E (some with Certificate of Conformance): 020-3497, 020-3499

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McDonnell & Miller FS7-4 industrial paddle flow switch

• Brass or stainless steel body
• R1¼" (BSPT) tapered thread fitting
• For pipes 1¼" and larger
• Adjustable "flow" adjustment
• General purpose housing
• 3.7A/240VAC or pneumatic
• Stocked models include: FS7-4J (p/n: 120060), FS7-4S (p/n: 120160), FS7-4SDJ (p/n: 120174) & FS7-4SJ (p/n: 120171)

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McDonnell & Miller FS4-3 general purpose paddle flow switch

• Brass or stainless steel body
• Supplied paddles (316SS): 1, 2, 3 & 6"
• Output: SPDT microswitch, mains rated (120»240Vac)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Process connection: R1" (BSPT) & 1" NPT
• Pipe sizes: 1" & larger
• Temperature: up to 149°C
• Pressure: up to 11bar
• Stocked models include: FS4-3J (p/n: 114610), FS4-3S (p/n: 114641), FS4-3SJ (p/n: 176216)
• Some FS4-3T models with integral tee piece also available ex. stock

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Eletta PR1 paddle type flow switch

• Rugged flow switch for liquids
  • Teflon sleeve mounting allows the paddle to swing in both directions so can handle backflow (switches only in one direction)
• Wetted parts: copper, 316 stainless steel, nitrile (HNBR)
• Process connection: 1” BSP
• Pipe sizes: 2 »10" (DN50 » 250)
• Output: SPDT microswitch (relay)
• Pressure: 25 bar
• Temperature: -20 » 125°C
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Enclosure: IP65 (weatherproof)
• Stocked models: PR1-IP65

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McDonnell & Miller FS7-4W industrial, weatherproof paddle flow switch

• NEMA 4X (~IP65) housing
• Brass or stainless steel body
• High pressure ratings
• Reliable paddle type
• Stocked models include: FS7-4SW (p/n: 120191), FS7-4SWJ (p/n: 120197), FS7-4W (p/n: 120201) & FS7-4WJ (p/n: 120261)

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McDonnell & Miller AF1 paddle air flow switch

• General purpose air flow switch
• Brass, steel & aluminium wetted parts
• Output: SPDT microswitch, mains rated (120»240Vac)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Process connection: flat flange for duct mounting
• Duct sizes: 6 » 8"
• Temperature: 0 » 149°C
• Stocked parts: AF1, AF1-S
• Paddle repair kits also available ex. stock

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McDonnell & Miller AFE-1 hazardous area air flow switch

• Hazardous area air flow switch
• Brass, steel & aluminium wetted parts
• Output: SPDT microswitch, mains rated (120»240Vac)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Process connection: flat flange for duct mounting
• Duct sizes: 8" (203mm) & larger
• Temperature: 0 » 135°C
• Hazardous area approval: UL
• Stocked part
• Paddle repair kits also available ex. stock

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McDonnell & Miller AF2 paddle air flow switch

• Brass, steel & aluminium wetted parts
• Output: SPDT microswitch, mains rated (120»240Vac)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Process connection: flat flange for duct mounting
• Duct sizes: 8" (203mm) & larger
• Temperature: 0 » 149°C
• Stocked part
• Paddle repair kits also available ex. stock

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McDonnell & Miller AF3 paddle air flow switch

• Brass, steel & aluminium wetted parts
• Output: SPDT microswitch, mains rated (120»240Vac)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Process connection: flat flange for duct mounting
• Duct sizes: 8" (203mm) & larger
• Temperature: 0 » 135°C
• Stocked part
• Paddle repair kits also available ex. stock

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McDonnell & Miller FS7-4E hazardous area industrial paddle flow switch

• NEMA 4X (~IP65) housing
• Brass or stainless steel body
• High pressure ratings
• Reliable paddle type
• Approval: UL & CSA certified for use in Ex d (explosion proof) applications
  • NOTE: products do not carry IEC Ex certificates
• Output: SPDT microswitch, mains rated (120»240Vac)
• Adjustable range: refer manual for flow setting vs pipe size & paddle length
• Process connection: 1¼" NPT taper thread fitting
• Temperature: 0 » 149°C
• Stocked models include: 
• Models for import: 

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Sitron CF12DC + CF12AC thermal dispersion flow switches

• Incredible range of customisation available
• No moving parts for long, service free operation
• Wide range of process connections - e.g. flanged, tri-clamp, threaded (BSP, NPT & others)
• Custom insertion lengths
• DC, AC and direct switching models available
• SPDT relay or transistor output
• DIN plug or junction box electrical termination (nylon, aluminium or stainless steel)
• Adjustable inline

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Kayden Classic 812 thermal dispersion flow switch with flanged process connection

• Push button programming - NOT trimpots
• ANSI flanges from 1" cl 150 » 10" cl 900
• 316SS, Titanium or Hastelloy C wetted parts
• 2 x adjustable SPDT relays + 1 x spannable 4-20mA output
• Built-in universal power supply for 12»24Vdc or 115»230Vac
• Watchdog (self-checking) fault circuit with LED warning
• LED bargraph display (flow range, relay status & set points)
• Relay status LEDs
• Blind or explosion proof glass enclosure with optional remote mounting
• RS-485 output and programming
• Ex d rated (CSA / FM / UL, IECEx coming soon)
• Adjustable inline

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Kayden Classic 810 thermal dispersion flow switch with threaded process connection

• Push button programming - NOT trimpots
• Threads available from ½ » 2" NPT (BSP on request)
• 316SS, Titanium or Hastelloy C wetted parts
• 2 x adjustable SPDT relays + 1 x spannable 4-20mA output
• Built-in universal power supply for 12»24Vdc or 115»230Vac
• Watchdog (self-checking) fault circuit with LED warning
• LED bargraph display (flow range, relay status & set points)
• Relay status LEDs
• Blind or explosion proof glass enclosure with optional remote mounting
• RS-485 output and programming
• Ex d rated (CSA / FM / UL, IECEx coming soon)
• Adjustable inline

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Kayden Classic 814 thermal dispersion flow switch with flanged, retractable packing gland for

• Push button programming - NOT trimpots
• Remove the sensor from your process without have to stop the application
• ANSI flanges from 1½ » 10" cl 150
• 316SS, Titanium or Hastelloy C wetted parts
• 2 x adjustable SPDT relays + 1 x spannable 4-20mA output
• Built-in universal power supply for 12»24Vdc or 115»230Vac
• Watchdog (self-checking) fault circuit with LED warning
• LED bargraph display (flow range, relay status & set points)
• Relay status LEDs
• Blind or explosion proof glass enclosure with optional remote mounting
• RS-485 output and programming
• Ex d rated (CSA / FM / UL, IECEx coming soon)
• Adjustable inline

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Kayden Classic 816 thermal dispersion flow switch threaded, retractable packing gland for

• Push button programming - NOT trimpots
• Remove the sensor from your process without have to stop the application
• 1" NPT thread
• 316SS, Titanium or Hastelloy C wetted parts
• 2 x adjustable SPDT relays + 1 x spannable 4-20mA output
• Built-in universal power supply for 12»24Vdc or 115»230Vac
• Watchdog (self-checking) fault circuit with LED warning
• LED bargraph display (flow range, relay status & set points)
• Relay status LEDs
• Blind or explosion proof glass enclosure with optional remote mounting
• RS-485 output and programming
• Ex d rated (CSA / FM / UL, IECEx coming soon)
• Adjustable inline

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Kayden Classic 828 thermal dispersion flow switch with Tri-Clamp (sanitary) connections

• Push button programming - NOT trimpots
• 3A compliant Tri-Clamp connections from 1 » 3.5"
• 316SS wetted parts with exotic alloys available on request
• 2 x adjustable SPDT relays + 1 x spannable 4-20mA output
• Built-in universal power supply for 12»24Vdc or 115»230Vac
• Watchdog (self-checking) fault circuit with LED warning
• LED bargraph display (flow range, relay status & set points)
• Relay status LEDs
• Blind or explosion proof glass enclosure with optional remote mounting
• RS-485 output and programming
• Ex d rated (CSA / FM / UL, IECEx coming soon)
• Adjustable inline

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Kayden duct mounting accessories for thermal dispersion flow switches

• Built to suit threaded Kayden thermal dispersion flow switches
• Allows threaded units to be mounted on curved or flat ducts, especially in air flow switch applications
  • NOTE: avoid applications where condensation may occur on probe

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