Mainsboost Plus MBP 450SV - Mains water pressure boosting

Mainsboost Plus

The Mainsboost MBP 450SV features a nominal vessel size of 450 litres and a pressurised water holding capacity of approximately 248 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.

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 450SV water performance systems are WRAS Approved and come with a 5 year guarantee (3 year guarantee on pump and fittings).

Technical Specification

Product code 44509, 44510, 44511
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
Constructin 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*** 248 litres
Height 1775 mm
Width 660 mm
Depth 660 mm
Weight empty 80 Kg
Weight filled 328 Kg
Maximum weight 530 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
44494 MBP 100SV-1-22
44495 MBP 100SV-2-22
44496 MBP 100SV-3-22
44497 MBP 130SV-1-22
44498 MBP 130SV-2-22
44499 MBP 130SV-3-22
44500 MBP 200SV-1-22
44501 MBP 200SV-2-22
44502 MBP 200SV-3-22
44503 MBP 250SV-1-22
44504 MBP 250SV-2-22
44505 MBP 250SV-3-22
44506 MBP 300SV-1-22
44507 MBP 300SV-2-22
44508 MBP 300SV-3-22
44509 MBP 450SV-1-22
44510 MBP 450SV-2-22
44511 MBP 450SV-3-22