The GM Treble PressBox Wall-Mounted Pressurisation Unit is one of the most compact units on the market offering the ideal solution when space is at a premium.

Throughout a heating system, there is always potential for slight leaks to occur which gradually decrease system pressure leading to inefficient or disabled heating. Once installed, the PressBox will automatically maintain optimal system pressure by constantly monitoring the system via a pressure transducer. When pressure drops below the entered set point, the unit will top up the system to its original cold fill pressure thus restoring optimum operating conditions.


The PressBox can be used for the following applications:-

  • Sealed Heating Systems
  • Sealed Chilling Systems
Key Features
  • User Friendly Digital Controller
  • Wall Mounted
  • Compact Design
  • 4L Capacity Tank with AB Air Gap
  • Flood Protection
  • Password Protection
  • Dry Run Protection
  • Programmable Relays for BMS / Alarms
  • Easy Maintenance
  • Pump Body: RYTON
  • Body Plate: Brass
  • Impeller: Brass
  • Tank: AISI 304 Stainless Steel
  • Fittings: Brass / Nickel-Plated
  • Tubing: Nylon
  • Float Valve: Polypropylene (WRAS approved)

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