In this field of application a pressure relief valve is often into the system, which, after opening, can create the highest possible noise levels. For blow-off silencers a standard silencer solution is almost never possible due to the noise data, pressure and often special gasses and temperatures. TIO BV has developed the MTHDS blow-off silencer range for these applications.

To reduce the blow-off noise, the MTHDS silencer has a single or multiple stage diffuser at the inlet for a controlled internal expansion . After this expansion an absorption part follows, where the noise energy is transmitted into heat. The actual dimensions and internal execution of the silencer is determined by the project data such as valve size, pressure, medium, temperature and noise requirement.

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