Valtek Severe Service Equipment
Valtek Severe Service Equipment
Valtek Severe Service Equipment
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<strong>Valtek</strong> <strong>Severe</strong> <strong>Service</strong> <strong>Equipment</strong>MegaStream TrimOne and Two-stage AttenuatorDesignMegaStream valves equipped with aone- or two-stage seat retainer (called anattenuator) represent an extremely economicaland innovative approach to lownoise applications by permitting up to 15dBA noise reduction. A standard attenuator(Figure 29) is constructed from heavy-dutydrilled-hole cylinders. Since one standarddesign exists for each valve size, specialengineering is not required. This results inlower costs and quicker deliveries. Becauseof parts interchangeability with standardseat retainers, one and two-stage attenuatorscan be fitted into conventional <strong>Valtek</strong>Mark One valves without special or additionalparts. The simplicity of design alsopermits easy removal and maintenance.Both one and two-stage MegaStream trimsare available in either unbalanced or pressure-balanceddesigns (Figures 30 and 31).Figure 30: Unbalanced MegaStream TrimFigure 29: Two-stageMegaStream AttenuatorFigure 31: Pressure-balanced MegaStream Trim20Flowserve Corporation, <strong>Valtek</strong> Control Products, Tel. USA 801 489 8611