Start Up Vent Silencer

Additional Details

Residual media steam or gas is let out to the atmosphere through the start up vent valve, during start up or shutdown of a system. This noise produced due to the pressure gradient can be effectively reduced through PRAcoustics Start up Vent Silencers. Design of Start up Vent Silencer is very similar to that of Safety Valve Silencer. The inlet pressure of the gas-stream is reduced to atmoshperic pressure using a diffuser without reducing the exhaust flow rate and causing pressure build-up at the relief valve. The number and size of the diffuser sections depend upon the inlet pressure of the medium and the acoustic requirements. The pressure drop across the diffuser is selected based on the flow conditions of the media to offer a cost-effective silencer design. After the pressure is reduced, the medium is sent through a muffler for better noise performance. Design of our diffuser assembly is in compliance with ASME section 8, division 1 standards. Depending on the size of the diffuser and the silencer muffler upto 70dB of noise can be reduced. Typical applications for startup vent silencer include boiler blow down lines, air compressor vents and gas plant vents.