Installing vacuum relief valve

If the end of the discharge pipe is lower than the pump chamber, negative pressure in the discharge pipe can cause the pump chamber to be drained dry. Install a vacuum relief valve to prevent the pump chamber from being drained dry.
NOTICE! The vacuum relief valve is fitted on the Storz coupling, meaning it can only be installed together with the flush connection.
NOTICE! For correct functioning of the gate valve and safe installation/dismantling of the pump at any time, align the vacuum relief valve during installation.