Skip to content
About Careers Contact Login
PD Blowers PD Blowers
  • Home
  • Products
    • BlowersRoots URAIRoots URAI-DSLRoots URAI-JRoots URAI-J-DSLRoots URAI-GRoots RAMRoots RAM-JRoots RAM-GJRoots Tri-RAMRoots RCSRoots RCS-JRoots DVJRoots VJROOTS-FLORoots Whispair MaxRoots RAS-J & RGS-J
      AccessoriesBlower LubricantsCheck ValvesFilter ElementsGaugesFilter AssembliesConnectorsPower TransmissionRelief ValvesSilencersAir Water Separators
      Replacement PartsMounting SystemsEnclosuresPackagesGas MeteringOil FiltrationOil Water SeparatorsExVel Turbo FansSpecial OffersBlower SelectorProduct Resources
      Surplus ProductsSurplus Products
      Pressure & Vacuum PackagesPressure & Vacuum Packages
  • Custom Solutions
    • FabricationSystem Integration
      CapabilitiesUL Control PanelsPlasma CuttingCNC PunchingFormingPlate RollingMIG, TIG, & Stick WeldingPaintingMaterial HandlingTesting
      Custom ApplicationsSpecialty EnclosuresSoil Remediation SystemsAir Water SeparatorsThermal OxidizersRemote Monitoring SystemsMulti Stage Vacuum SystemsAir Compressor SystemsConveying System Packages
      FabricationFabrication
      System IntegrationSystem Integration
  • Service + Repair
  • Support
Menu
Contact
Home : Products : Accessories : Silencers : Page 4

Silencers

More Details
Filter by:

Manufacturer

Max Flow (CFM)

Connection Size

Connection Type

  • Show value(s)

Silencer Type

  • Show value(s)

Showing 37–47 of 47 results

  • U5-threaded-absorptive-silencer-iso

    U5 1/2″ Absorptive Blower Silencer

    $155.80
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 3/4″ Absorptive Blower Silencer

    $155.80
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 1″ Absorptive Blower Silencer

    $155.80
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 1.25″ Absorptive Blower Silencer

    $155.80
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 1.5″ Absorptive Blower Silencer

    $155.80
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 2″ Absorptive Blower Silencer

    $208.05
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 2.5″ Absorptive Blower Silencer

    $301.15
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 3″ Absorptive Blower Silencer

    $305.90
    Add to cart
  • U5-threaded-absorptive-silencer-iso

    U5 4″ Absorptive Blower Silencer

    $467.40
    Add to cart
  • U5-flanged-absorptive-silencer-iso

    U5 5″ Absorptive Blower Silencer

    $780.90
    Add to cart
  • U5-flanged-absorptive-silencer-iso

    U5 6″ Absorptive Blower Silencer

    $1,059.25
    Add to cart
  • ←
  • 1
  • 2
  • 3
  • 4

Product Line Details

Positive Displacement blowers have two impellers that trap a “pocket” of air each time they sweep by the inlet and discharge connection. A pressure pulse is created each time this occurs. This pressure pulse creates noise and vibration. Blower silencers can be used to reduce this noise and vibration.

Silencers are typically used on the inlet and discharge of a positive displacement blower used for pressure applications. A discharge silencer is typically used on a vacuum application.

There are three basic types of silencers used to reduce the noise and vibration generated by the pressure pulse.

  • Chamber Type
  • Chamber Absorptive Type
  • Absorptive Type

Silencer Capacity based on Standard Air Conditions and Silencer Velocity of 4,600 fpm which is equivalent to a 0.2 psi pressure drop (5.54″H2O). Silencer sizing is based on a “C” (Pressure Drop Coefficient) of 4.2. This covers the following Universal Silencer Models: URB,URBY,UCI,UCIY,UCIH,RIS,RISY,RISH,UCD,UCDY,URD,URDY,URDH,SD,SDY,SDH,
RD,RDY AND RDH.

Interpreting the Table
The flows stated under the “INLET SILENCER” heading would be the nominal flow rating for the inlet flow to the blower.

The flows under the “DISCHARGE SILENCER” headings are calculated back to an inlet flow. Therefore, if you have a blower with a nominal inlet flow of 500 CFM (Cubic Feet per Minute) at 6 psig, a 5″ inlet silencer would be required (rated for 750 CFM) and a 4″ discharge silencer could be used.

The table can be used as a quick guide to blower silencer sizing at a reasonable pressure drop. A smaller silencer may be selected, however, the pressure drop will need to be calculated. A smaller silencer will typically lead to an increased pressure drop through the silencer. Increased pressure drop results in higher horsepower for the blower or vacuum pump.

Size INLET SILENCER DISCHARGE SIL.
4 psig
DISCHARGE SIL.
6 psig
DISCHARGE SIL.
8 psig
DISCHARGE SIL.
10 psig
DISCHARGE SIL.
15 psig
1 30 35 40 40 40 45
1.5 70 80 85 90 95 105
2 120 140 150 160 165 185
2.5 190 220 235 245 255 285
3 270 320 335 355 370 415
3.5 370 430 455 480 505 560
4 480 560 600 630 660 735
5 750 880 935 985 1,030 1,150
6 1,080 1,260 1,340 1,410 1,480 1,650
8 1,920 2,250 2,390 2,510 2,630 2,940
10 3,000 3,520 3,730 3,930 4,110 4,590
12 4,300 5,070 5,370 5,660 5,920 6,600
14 5,900 6,890 7,310 7,700 8,060 8,990
16 7,700 9,000 9,550 10,000 10,500 11,800
18 9,700 11,400 12,100 12,700 13,300 14,900
20 12,000 14,000 14,900 15,700 16,400 18,400
22 14,500 17,000 18,100 19,000 19,900 22,200
24 17,300 20,200 21,500 22,600 23,700 26,400
26 20,300 23,800 25,200 26,600 27,800 31,000
28 23,500 27,600 29,300 30,800 32,200 36,000
30 27,000 31,700 33,600 35,400 37,000 41,300
Est. Temp. 70°F 115°F 140°F 165°F 190°F 240°F
Related Resources
Specifications
Universal Blower Silencer General Information
Join Our Newsletter

pdblowers, Inc.
2280 Chicopee Mill Rd SW
Gainesville, GA 30504
Get Directions
Take a Virtual Tour
View All Locations
Phone: 800-536-9933
Fax: 770-538-0022

Fabrication
System Integration
Service + Repair
About
Contact
Employment
Privacy
Site Map

Products
Blowers
Accessories
Mounting Systems
Enclosures
Packages
Replacement Parts
Special Offers

Custom Solutions
Air Compressor Systems
Air Water Separators
Remote Monitoring Systems
Soil Remediation Equipment
Thermal Oxidizers
Multi Stage Vacuum Systems
Latest Projects

Support
Blower Selector
Technical Documents
Tech Talk
FAQs
Return Policy

LinkedIn Youtube
©pdblowers, Inc. Design and E-Commerce by: Red Clay Interactive