Code: EVUP Categories: ,

EVUP Heating & Domestic Expansion Vessel

From £43.00 £51.60 inc. vat


Expansion vessel with replaceable rubber bag for heating and boosted domestic cold or hot water services. Model EVUP is rated at 10 bar and approved for wholesome water applications.


Unvented heating systems, Boosted cold water service, Boosted hot water service

Product Specification
  • Backflow Prevention No
  • Powered No
Specification Clause

Where indicated on the drawing an Expansion Vessel suitable for both heating and domestic boosting applications – model EVUP – shall be installed as distributed by Arrow Valves Ltd – Tel 01442 823123 The vessel body shall be carbon steel with blue epoxy coating with a bottom entry male connection. The rubber membrane shall be suitable for 70 degrees Celsius at 10 bar. A separate expansion vessel ball valve – model BVEV – shall be supplied to enable draining of the vessel in order to check the air charge. The vessel must be correctly sized. The pre-charge pressure shall be 0.2 bar less than the switch on pressure of a booster pump.

Data Sheets


evupssdatasheet.pdf (310.71 KB)


Installation Guide

evcpevupommanual.pdf (158.42 KB)