Code: BTAF5-8A Categories: ,

Pent-A-Boost® High Duty, 3.7 Litres/sec @ 3 to 8 bar. 100 Litre 230 – 400V

From £10,770.00 £12,924.00 inc. vat


The BTAF (A) is designed to overcome the need for high flow rates without the compromise on space. Still able to fit through a standard doorway, and not requiring a full-size plant room, the high duty range boasts an impressive 3.7 litres/sec. at 3 bar to 8 bar dependent on model. The unit has 100 litres of stored water, and a tank that is flooded from 3 number 1” Solenoids, to maintain the flow. The primary purpose is to boost water pressure to elevated areas, where the mains supply is inadequate for these needs. The set is approved for drinking (wholesome) water since it has the required screened overflow and vent, conforming to G16.13. The unit is quiet by virtue of inverter-controlled pumps, anti-vibration feet and flexible stainless braided connection hoses.


Penthouse (3 storey and taller); Boosting low water pressure; Combi boilers; showers.

Product Specification
  • Cistern Size 100 Litres
  • Inlet Size DN40
  • Max. Flow Rate 3.7 Lt/s
  • Outlet Size DN40
  • Powered Yes
Specification Clause

A Booster Pump Set “Pent-A-Boost” shall be installed – model BTAF5-8A – as manufactured and distributed by Arrow Valves Ltd – Tel 01442 823123 The unit shall have an 100 litre cistern, with a lid and screened DN40 overflow complying with G16.13 of the Water Regulations. The pump shall be centrifugal with stainless steel impellors and housing with an input power of 3.0 kW and 5.0 bar closed valve head and be controlled by a pressure switch connected to a 24 litre pressure vessel. The cistern level shall be controlled automatically by three 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 42 mm supply is required, which must maintain a dynamic pressure of 1.0 bar.

Data Sheets


btafdualdatasheet.pdf (1.63 MB)


Installation Guide

btafvarspeeddualpumpdutyassisto_mmanual_2.pdf (620.45 KB)


Additional Information