Mainsboost Plus MBP 250SH - Mains water pressure boosting

Mainsboost Plus

The Mainsboost MBP 250SH features a nominal vessel size of 240 litres and a pressurised water holding capacity of approximately 132 litres.

In addition to the boost to water flow provided by the Mainsboost vessel, the vessel mounted Mainsboost Plus pump unit is capable of boosting water pressure up to 3.5 bar.

Designed to be installed horizontally in installation situations where vertical space may be restricted, the Mainsboost MBP 250SH is supplied with a compatible mounting cradle.

Available in single, twin and triple vessel options, each unit is supplied with a comprehensive Upstream Line-In Kit (ULK) featuring 22 mm pipe diameter fittings.

Constructed from an epoxy coated steel body and a highly durable virgin butyl diaphragm, Mainsboost Plus MBP 250SH water performance systems are WRAS Approved and come with a 5 year guarantee (3 year guarantee on pump and fittings).

Technical Specification

Product code 44539, 44540, 44541
Guarantee 5 years (3 year guarantee on pump and fittings)
WRAS approval 1611336
System patent no. 2349908
Noise From 50 dB(A)
Maximum ambient air temperature 40 °C
Min / Max water temperature Min 4 °C / Max 35 °C
Protection class IPX4
Maximum head (closed valve) 4.3 bar
Maximum working pressure* 600 kPa (6 bar)
Type Peripheral
Mechanical seal materials EPDM / PTFE / Al. Oxide
Head material Brass
Impeller material Brass
Motor Induction, auto-reset thermal trip
Duty rating Continuous (S1)
Connections G ¾ male
Flexible hoses (x2) 22 mm push-in x 22 mm push-in x 240 mm long
Control system
Dry run protection  
Pressure vessel
Construction material Mild steel
Membrane material Butyl rubber
Max rated temperature 90 °C
Power supply/phase/frequency 230 V a.c./ 1 / 50 Hz
Current (full load) 1.8 Amps
Power consumption 398 Watts
Fuse rating 3 Amps
Power cable (pre-wired) 1.5 metres
Vessel capacity*** 132 litres
Height 888 mm
Width 540 mm
Depth 1206 mm
Weight empty 51.5 Kg
Weight filled 186.5 Kg
Maximum weight 301.5 Kg
ULK kit 22 mm

 *The maximum pressure that can be applied to the pump under any installation conditions.

**Vessel capacity, dimensions and weights are per cylinder

***This information is per cylinder

Product Variants
Part no Description
44536 MBP 200SH-1-22
44537 MBP 200SH-2-22
44538 MBP 200SH-3-22
44539 MBP 250SH-1-22
44540 MBP 250SH-2-22
44541 MBP 250SH-3-22