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| Silencer | Line | |
| PULSCO’s Line Silencers are used to control noise produced by valves in piping systems. The line silencer is close-coupled with the control or pressure reducing valve and reduces the aerodynamic noise resulting from gas or vapor turbulence. It also prevents high intensity noise from propagating into the downstream piping and radiating into the surrounding space. In addition to providing the required back pressure on the valve, each line silencer is designed to attenuate the noise level by 25 dBA. | |
| Line PULSCO’s Silencers reduce low frequency noise by shifting it to higher frequency. High frequency noise is then easily absorbed by the acoustic packing in the tube module, providing compliance with government ordinances, protection of employees from excessive plant noise and customer requirements. The active components of a PULSCO Line Silencer are the inlet diffuser, plenum section, and acoustic tube module. The Inlet Diffuser provides energy dissipation and modification of the noise spectrum from low to high frequency waves for easier attenuation. It also provides the back pressure required for optimum valve performance and size. This reduced pressure drop across the valve reduces the noise generated by the valve and the velocity downstream of the valve. The Plenum Section minimizes shell noise radiation and noise leakage. It slows the flow velocity prior to entry into the Acoustic Tube Module. The Acoustic Tube Module, comprised of multiple flow tubes surrounded by acoustic packing, absorbs and attenuates the high frequency acoustic energy as modified by the inlet diffuser. Because PULSCO’s Line Silencer combines the acoustic benets of reactive and absorptive silencing, maximum attenuation can be achieved in a short silencer length. |
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| To provide capacities for a wide range of flows, standard line silencers are available in diameters from 12 to 72 inches. PULSCO’s Line Silencer is a pressure vessel designed, constructed, and stamped in accordance with ASME Section VIII, Div. 1 Pressure Vessel Code. PULSCO offers a number of options for our standard line silencer product line. They may include drain couplings, inspection ports, ANSI B 16.5 flanges, and saddle supports. Special materials and finishes are available to withstand the thermal and shock stresses and/or corrosive applications in continuous or periodic operation. | |