General Information - Blower Silencers - Universal: Acoustic Silencers

2.5Rotary PositiveBlower SilencersBlower SilencersSpecificationsRIS GroupCombination Chamber-Absorptive TypeInlet SilencerAttenuation, dB50403020100Typical Attenuation Curve63 125 250 500 1K 2K 4K 8KOctave Band Center Frequency, HzSee pages 1.1–1.3 for ordering information | www.universalsilencer.com 1 2 3 4 5 6 7 8 9 10The RIS Series Inlet Silencer is a heavyduty,all welded unit constructed of carbonsteel sheet and plate. It features anacoustically-treated outlet and will providepulse control and silencing suitable forcritical PLV applications. Sizes 4" and largerare equipped with flanged connectionsdrilled to 125/150 lb ANSI specifications.P(Size)11¹⁄₂22¹⁄₂33¹⁄₂45681012141618202224262830PartNumber54-102-AA54-125-AA54-103-AA54-135-AA54-104-AA*54-105-AA*54-106-AA54-108-AA54-110-AA54-112-AA54-114-AA54-116-AA54-118-AA54-120-AA54-122-AA54-124-AA54-126-AA54-128-AA54-130-AAD L N H88810101214182226303642424854546066NL HNCombination Chamber-Absorptive Type Inlet Silencers28¹⁄₂333939¹⁄₂4557¹⁄₂6472859811111312614015316717919320633333333¹⁄₂3¹⁄₂3¹⁄₂3¹⁄₂3¹⁄₂3¹⁄₂4¹⁄₂4¹⁄₂4¹⁄₂4¹⁄₂4¹⁄₂4¹⁄₂22¹⁄₂273333¹⁄₂3951¹⁄₂58657891104106119131144158170184197Note: Dimensions and weights are nominal and may vary slightly with production models.Request certified drawings of specific models for exact dimensions.*Specify -TT for male pipe threaded units.RIS SeriesDPSmaller sizes are standard with malethreaded pipe nipples. Units sized 4" and 5"are available in either flanged or male pipethreads. Exterior surfaces receive a shopcoat of rust inhibitive primer and may befinish painted in the field if desired.The RIS Series is the basic model, havingconventional end-in, end-out configuration.RISY Series(Low Side Outlet)RISY8¹⁄₂9101112¹⁄₂15¹⁄₂1721¹⁄₂25¹⁄₂29¹⁄₂3035¹⁄₂414746¹⁄₂5455¹⁄₂6166¹⁄₂KKRISHSizes 1"–1¹⁄₂" use U5 Series (page 3.2)Y————14¹⁄₂17¹⁄₂2026¹⁄₂32¹⁄₂384049¹⁄₂57¹⁄₂62¹⁄₂65¹⁄₂75¹⁄₂7684¹⁄₂93¹⁄₂E————2¹⁄₄2³⁄₄3¹⁄₄4567¹⁄₂00000000MinFIXED AT 6FIXED AT 7FIXED AT 7FIXED AT 87¹⁄₂991213¹⁄₂1516¹⁄₂18¹⁄₂20¹⁄₂2223¹⁄₂25¹⁄₂25¹⁄₂29¹⁄₂30¹⁄₂A low side outlet version is designated RISYSeries and high side outlet configuration isdesignated RISH Series. The three types arefundamentally alike and performance isidentical. Mounting brackets and otheroptions are available—see page 2.11.RISH Series(High Side Outlet)ERISYKMax16¹⁄₂2325¹⁄₂30¹⁄₂3744505158¹⁄₂63¹⁄₂69¹⁄₂75879198YYMin2¹⁄₂" THRU 3¹⁄₂"AVAILABLE ONSPECIAL ORDER30¹⁄₂4043¹⁄₂49¹⁄₂61¹⁄₂698156¹⁄₂62¹⁄₂7078868695103RISHMax32¹⁄₂43¹⁄₂495465¹⁄₂7789¹⁄₂88¹⁄₂100¹⁄₂111123135147157170Weight2525304050801101903805508001,0501,3501,5002,1002,7003,0503,8505,150