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The Pressure Sentry is a compact device capable of detecting low pressure in combination boiler heating systems. The device provides an audio-visual alert if system pressure falls below a set point. It can be installed within minutes to most radiators and can help heating engineers and plumbers to reduce costs but avoiding unnecessary emergency call outs. It uses a standard half inch BSP screw thread and has a small battery for the alarm, only drawing power when low pressure is detected.


  • Low cost device.
  • Ideal for those offering domestic heating contracts.
  • Helps save money on unnecessary call outs.
  • Can be fitted to any radiator in the home.
  • Audio and Visual Alert.

Technical Data:


Material: Brass & Electronics
Inlet Connection Material: Brass
Housing  Stainless Steel 
Connection Size: ¼” BSP Bottom Entry
Pressure Range: 0 - 6 Bar
Temperature Range: -20 - 65°C
Gauge Dial Diameter: 63mm