Mainsboost MB 250SH - Mains water pressure & flow boosting


The Mainsboost MB 250SH features a nominal vessel size of 240 litres and an actual water holding capacity of typically 132 litres.

Designed to be installed horizontally in installation situations where vertical space may be restricted, the Mainsboost MB 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, all Mainsboost vessels are WRAS Approved and come with a 5 year guarantee.

Technical Specification

Product code 44750, 44751, 44752
Guarantee 5 years
WRAS approval 1611336
System patent no. 2349908
Vessel capacity 132 litres
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
Construction Mild Steel
Membrane Butyl rubber
Connectors 1¼ " BSP x 28 mm
Diameter 535 mm
Overall length 1210 mm
Weight (dry) 37 Kg
Weight (total) 157 Kg
Weight (maximum) 277 Kg

*Working pressure

**This information is per cylinder

Product Variants
Part no Description
44747 MB 200SH-1-22
44748 MB 200SH-2-22
44749 MB 200SH-3-22
44750 MB 250SH-1-22
44751 MB 250SH-2-22
44752 MB 250SH-3-22