PR1 Liquid Paddle Switch

Brand: Eletta

The Eletta PR1 Paddle Switch is using the liquid flow to activate the spring supported paddle and the micro-switch to give an alarm if the flow stops or starts. PR1 can be used in pipe sizes from DN50 to DN250 and the set point is dependent on the length of the paddle and the pipe size, please refer to the table below. The installation is simple as you can cut the paddle to the desired length on site according to the actual pipe size. The paddle aligns fully with the flow and creates a very small pressure drop. The function works only in one flow direction. Wetted parts is made of Copper Alloy and Stainless Steel and the sealing of Nitrile (HNBR).



BSP Connection

  • 1” BSP

Electrical Rating

  • 0.02 A at 110 Vdc
  • 0.2 A at 48 Vdc
  • 1 A at 24 Vdc
  • 16 A at 250 Vac

Environmental Protection

  • IP43
  • IP65

Maximum System Pressure

  • psi: 362.6 (kPa: 2,500, bar: 25)

Mounting Position

  • Horizontal

Pipe Size

  • 2” to 10” (50 to 250 mm)

Seat / Seal Material

  • Sealing Material: Nitrile (HNBR)

Switch Type

  • 2 Microswitch SPDT (1-Pole 2-Way)

Temperature Range

  • -20° to 125° C (-4° to 257° F)

Wetted Materials

  • 316 Stainless Steel
  • Copper Alloy


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