Silencers

Single or multiple valvesSingle valvesWhen noise is generated by a single valve, goodresults are normally attained by using an SDR or SDVhose silencer. This type of silencer is suitable for valveswith connection diameters of Ø 1/8” or Ø 1/4".Whether you should choose a straight hose silencer(SDR) or an angled hose silencer (SDV) is primarily aquestion of available space. The choice also dependson the orientation of the valve’s exhaust ports.If you need as little pressure drop as possible across thesilencer, you should choose an SDR. Consult the tableon the following page to make sure you have not selecteda silencer that is too small.In most cases it is simply amatter of choosing a silencerwith the same thread as theexhaust ports of the valve.Several valvesWhen noise is generated by many valves, the best solutionis to connect the exhaust ports to a central silencer(CD). Of course you can also use hose silencers if thesize of the valve so permits.The solution of connecting several valves together providesan installation that is well adapted to its purpose. Thecentral silencer can be positioned so that the degree ofnoise reduction is maximized. The centralized placementof the silencer also facilitates maintenance since manyvalves can be serviced from a single point. Comparethis with the ordinary, conventional solution where youuse two silencers per valve.The installation of a central silencer saves both time andmoney when it comes to maintenance.The OPUS central silencersystem lowers the costsfor service and maintenanceto a minimum.Many machines have a large number of valves that arecontrolled by block-mounted valves. It is rare that severalof the cylinders operate simultaneously. Therefore youcan connect a large number of valves to a single silencer.You can connect up to 10 1/4” valves. If a sensitivevalve leads to malfunction, it should be connected to asilencer of its own.A CD is dimensioned to handle the flow from a 1/2”valve operating at short intervals.www.silvent.com4.3