The STOPL-S4-F1 DN350 PN40 device is intended for temporary interruption of the media flow in DN350 pipelines. The main advantage of the device is that it can be used on pipelines with pressure ranging from 0 to 40 bar. The device principle differs from the previous types. The device consists of a plate gate valve, a loading chamber with a stopple rod and a split flange for directing the by-pass. The stopple rod is incorporated in a closed chamber. The rod is, therefore, hidden. It is introduced mechanically. The components of the new equipment are high-pressure rated and tested according to ČSN and TPG rules.
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