Isolate without having to drain down the whole system Allows the vessel to be isolated and drained for essential periodic servicing and re-charging No need to add inhibitor back into the system Shut off and drain, for membrane expansion vessels in sealed heating and cooling system Brand:Tesla Uk Ltd Manufacturer Stock Code:EVSV Width:70 mm Weight:0.268 kg Sub-Category:Cylinder Accessories Brand:Tesla Manufacturer Part Number:EVSV EAN Number:5056198106227 Category:Spares and Accessories