Spirax Sarco VB21 kinds of small general-breaking vacuum, mainly for condensing vapor (steam) and liquid systems.
For, when the steam system pressure below atmospheric pressure, the vacuum pipe break.
· Protect equipment from damage to the vacuum
· At the same time, can effectively exclude pipes and heat exchanger condensate.
Installation
VB21 air valve must be installed in a vertical position, the system connector located on the bottom of the vacuum break valve. As for the steam system, emptying valve must be installed on the highest point of the system, and to prevent condensation of water valve is not invaded.