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Astralpool BP BPA BPM Series Pressure Switch / Flow Switch

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Astral BPM 400, BPM 600, BPM 700, BPM 800, BPM400A, BPM600A, BPM700A, BPM800A blue pressure flow switch parts. We now have a retrofit flow switch that can replace BP* heat pump pressure switches. Suits these heaters. First image shows how the new retrofit replaces the old pressure switch fittings. Note that wire modifications will be necessary.

Parts Available:

  • Retrofit Flow Switch or
  • Pressure Switch Only
  • Blue Threaded Cap - Obsolete


  • If blue piece for the Pressure Switch is OK, choose the Gray LG Pressure switch. 
  • If blue piece for the Pressure Swtich is damaged, choose the black flow switch. Wires may need to be connected. Polarity of the wires does not matter.
  • No other BPM parts are sold.

Flow switch must be oriented in direction of water flow.

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