Boost-A-Break® AB Air Gap Duty Assist

From £7,825.00 £9,390.00 inc. vat


Break Tank assembly with Fluid Category 5 protection by virtue of the integral Type AB air gap. The unit is supplied as a complete package on a base plate ready for installation. The primary purpose is to provide backflow protection in accordance with the new Water Regulations. The BTAB unit also boosts the water pressure for elevated areas or where a high flow rate is required e.g. wash-down. The cistern has a screened overflow and weir, making it suitable for unorthodox applications, which require a Hygienic Type AB air gap e.g. butchery and vegetable preparation. The unit is quiet by virtue of the centrifugal pumps, anti-vibration rubber feet and flexible stainless braided connection hoses.


Waste bin washing; Hose union taps – non-domestic; Wash-down – animals or any Fluid Category 5; Underground or surface irrigation – see HUBG; Laboratories; Baths in health care premises; Showers health care – see Care Shower; Sinks with hoses; Bidets; Bedpan washing; Vegetable washing; Butchery & meat equipment / Slaughterhouse; Clothes washing machines – healthcare premises; Dish washing machines – healthcare premises; Applications deemed to be Category 5 by water company

Product Specification
  • Backflow Prevention Yes
  • Powered Yes
Specification Clause

A Break Tank and Booster set with a hygienic Type AB air gap “Boost-A-Break” shall be installed – model BTAB3-10A – as manufactured and distributed by Arrow Valves Ltd – Tel 01442 823123  The unit shall have a 24 litre nominal cistern and stainless steel raised valve chamber, with a lid, screened weirs, cistern drip tray with two DN40 connections, which require an overflow pipe.  The pumps shall be centrifugal with stainless steel impellors and housings.  The pump speeds shall be varied by an integral inverter to provide a constant pressure.  The pump controller shall feature alternate pump starting.  The duty at 100% output shall be 4.0 bar@ 1.6 lt/s and be controlled by a pressure transducer, which is damped with a 24 litre pressure vessel.  The cistern level shall be controlled automatically by two servo solenoid valves operated via stainless steel conductive electrodes and controller.  A low-level pump cut-out shall be controlled by electrodes in the cistern, which shall automatically reset once the cistern is sufficiently full.  The cistern shall feature a high-level alarm linked to a volt free BMS relay – model BTBMS2.  The unit shall feature a stainless steel base plate and be acoustically attenuated by anti-vibration feet and stainless steel braided flexible hoses.  A 35 mm supply is required, which must maintain a dynamic pressure of 1.0 bar.

Data Sheets


btabdualdatasheet-2.pdf (6.01 MB)


Installation Guide

btabvarspeeddualpumpdutyassistommanual-2.pdf (813.33 KB)


Additional Information



Approval Certificate

2003373-BTAB-2.pdf (829.88 KB)