Nearly any high pressure gas or steam application has the need to vent or evacuate a system at certain times or as a safety measure. Opening such a relief valve or control valves generates typical blow-off noise, which are usually very high. Designing silencers for these applications require a special approach. Subjects like pressure, temperature, flow noise and material choices are key. Our MTHDS type blow-off silencers can be installed in fairly any blow-off or vent installation.