The WaterBoost WB-Coffin 340 Mini3 Cat 5 (Type AB Air Gap) is a complete variable-speed water boosting system that combines low-profile coffin storage with the highest level of backflow protection in common use. The Type AB air gap cistern protects the mains against fluids up to and including Fluid Category 5, making it suitable for commercial, healthcare, laboratory, agricultural and industrial premises where ordinary domestic protection is not enough.
The system pairs a 340-litre WRAS-approved Category 5 AB air gap coffin tank with the DAB Esybox Mini3 variable-speed pump, delivering 50 l/min at 3 bar and a maximum delivery pressure of 5.5 bar. The pump’s intelligent inverter adjusts continuously to match demand — constant pressure to multiple outlets, lower energy use than fixed-speed alternatives.
Tank dimensions 1500mm (L) × 600mm (W) × 630mm (H). Supplied with the float valve discharging above the air gap, weir overflow, ½" connection and 1" brass outlet. All interconnecting pipework included as standard.
Fluid Category 5 Type AB air gap WiFi · Google · Alexa WRAS tank & pump 630mm height Pipework included 5.5 bar max
