Built to withstand the high pressure, high noise level environment down stream of pressure control valves, these silencers incorporate similar noise reduction principles to the vent silencer range but are offered to full pressure vessel code construction. If used in conjunction with standard trim valves, the need for costly quiet trim valves can often be eliminated.

Built with a diffuser, the drilling pattern is selected to provide a reshaped noise spectrum and optimum back pressure for the valve. The annular core construction consists of long strand glass fibre densely packed and anchored in place by a heavy gauge perforated facing, a layer of fibre glass cloth and a stainless steel screen.

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