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Brass paddle flow switch with NPT connection

Taco Inc

Taco Inc IFSW2BR-1 1" 2 SPDT Flow Switch 24/125/250VAC 1500 gpm accessory

SKU CH-HFG4-ECDDT

A 1-inch brass paddle flow switch with dual SPDT contacts rated at 15 A for 24, 125 and 250 VAC, operating from 4.5 to 1500 gpm between 32 °F and 250 °F media temperature

  • Monitors flow from 4.5 to 1500 gpm for broad system coverage
  • Handles 15 A at 125/250 VAC for reliable switching
  • Brass housing resists corrosion in water applications
  • Operates up to 250 °F media temperature for hot-water systems
  • 1-inch NPT connection fits standard piping without adapters

Taco IFSW2BR-1 Flow Switch for 1" Pipe

The Taco IFSW2BR-1 is a brass paddle-type flow switch designed for 1-inch NPT connections. It operates on 24, 125, or 250 VAC circuits at 60 Hz with a 15-amp contact rating. The switch activates between 4.5 and 1,500 gpm, making it suitable for monitoring flow in hydronic heating, cooling, or industrial piping systems where positive flow verification is required.

Installers needing positive flow proof on 1-inch

This switch suits technicians who need a reliable paddle mechanism to confirm water movement in 1-inch brass piping. It covers a broad flow range from 4.5 gpm up to 1,500 gpm. Builders requiring adjustable set-points, electronic sensing, or compatibility with pipe diameters other than 1 inch should look at alternative flow-sensing devices.

Brass housing handles 250 °F media

Under sustained load the brass body withstands continuous media temperatures up to 250 °F and ambient conditions up to 176 °F. The SPDT contacts maintain their 15-amp rating at 125 or 250 VAC during prolonged switching cycles. The paddle design resists fatigue in systems where flow remains constant for extended periods.

Highlights

  • Monitors flow from 4.5 to 1500 gpm for broad system coverage
  • Handles 15 A at 125/250 VAC for reliable switching
  • Brass housing resists corrosion in water applications
  • Operates up to 250 °F media temperature for hot-water systems
  • 1-inch NPT connection fits standard piping without adapters

Specifications

BrandTACO

Questions about this item

What pipe size and connection type does the IFSW2BR-1 require for installation?

The switch fits a 1-inch pipe and uses a 1-inch NPT connection.

Will the paddle switch operate reliably if the system flow drops below 4.5 gpm?

The minimum actuation flow is 4.5 gpm; below that the paddle will not trigger the contacts.

How can I verify the switch is working after wiring it to a 125 VAC control circuit?

Flow water above 4.5 gpm and confirm the SPDT contacts change state at the rated 15 A, 125 VAC load.

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