Mainsboost Charger MBC 450SV - Mains water pressure boosting

Mainsboost Charger

The Mainsboost MBC 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 wall mounted Mainsboost Charger 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 22mm or 28mm pipe diameter fittings.

Constructed from an epoxy coated steel body and a highly durable virgin butyl diaphragm, Mainsboost Charger MBC 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 44488, 44489, 44490
Guarantee 3 years
WRAS approval 1611336
System patent no. 2349908
Pump type Peripheral
Mechanical seal EPDM / PTFE / Al. Oxide
Flexible hoses 2
Dry run protection  
Pump body Brass
Impeller Brass
Maximum head (closed valve) 4.3 bar
Maximum working pressure* 600 kPa (6 bar)
Maximum ambient air temperature 40 °C
Min / Max water temperature** Min 4 °C / Max 35 °C
Pump connections G ¾ male
Flexible hoses
Connections 22 mm push-in x 22 mm push-in x 240 mm long
Type Induction, auto-reset thermal trip
Duty rating Continuous
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
Physical Charger enclosure
Enclosure protection IPX4
Depth 163 mm
Width 290 mm
Height (excluding hoses) 465 mm



Guarantee 5 years
Vessel capacity 248 litres
Construction Mild Steel
Membrane Butyl rubber
Connectors 1¼ " BSP x 28 mm
Diameter 660 mm
Overall height 1810 mm
Weight (dry) 76 Kg
Weight (total) 324 Kg
Weight (maximum) 526 Kg

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

**This information is per cylinder

Product Variants
Part no Description
44473 MBC 100SV-1-22
44474 MBC 100SV-2-22
44475 MBC 100SV-3-22
44476 MBC 130SV-1-22
44477 MBC 130SV-2-22
44478 MBC 130SV-3-22
44479 MBC 200SV-1-22
44480 MBC 200SV-2-22
44481 MBC 200SV-3-22
44482 MBC 250SV-1-22
44483 MBC 250SV-2-22
44484 MBC 250SV-3-22
44485 MBC 300SV-1-22
44486 MBC 300SV-2-22
44487 MBC 300SV-3-22
44488 MBC 450SV-1-22
44489 MBC 450SV-2-22
44490 MBC 450SV-3-22
44491 MBC 450SV-1-28
44492 MBC 450SV-2-28
44493 MBC 450SV-3-28