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Figure Number: 520 Series
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520 SeriesPiston-Type Water Hammer Arrester

Water hammer arresters control the destructive forces, pounding noises, and vibrations which develop in a piping system when a column of non-compressible liquid flowing through a pipe line abruptly stops or changes direction.

Figures 520T have threaded connection. Figures 520SC have sweat connections. All of the 520 Series are fabricated of copper, rated for 60 PSI, and are compliant to ASSE 1010.

Piston-Type Water Hammer Arrester Features:

  • Helps controls noises and vibrations created by water hammer
  • Used in residential, commercial, and industrial applications
  • Lead-free copper construction
  • Rated for 60 PSI

INSTALLATION
The piston unit can be installed in new construction or renovation/remodel It can be installed at any angle to accommodate structural limitations, and should be placed as close to the shut-off valve as possible, one on each hot and cold line.The piston unit is seamless, factory charged with nitrogen and is maintenance free and does not require access panels. It cannot be charged in the field. For optimum performace, install the piston unit in a vertical position.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Learn More about this warning
Shows specifications for standard configuration. Configuration options may change specifications.
  • Compliance/Certifications
    ASSE 1010, cUPC
  • Optional Materials
    Nickel Plated -NP
SubmittalSubmittal 520-T Series Arresters (pdf)
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Technical Drawings
DWG 520-SC Series ArrestersPiston Type Water Hammer Arrester - Male Sweat Connection (AA,A,B, C, D, E, F sizes)DWG177 KB
DWG 520-T Series ArrestersPiston Type Water Hammer Arrester - Hexagonal Male Threaded Inlet (AA,A,B, C, D, E, F sizes)DWG38 KB
RFA 520-SC Water Hammer ArrestersPiston Type Water Hammer Arrester - Male Sweat Connection (AA,A,B, C, D, E, F sizes)RFA372 KB
RFA 520-T Water Hammer ArrestersPiston Type Water Hammer Arrester - Hexagonal Male Threaded Inlet (AA,A,B, C, D, E, F sizes)RFA356 KB
Literature / Videos
Submittal 520-SC Series Arresters (pdf)Piston Type Water Hammer Arrester - Male Sweat Connection (AA,A,B, C, D, E, F sizes)PDF819 KB
Smith Fluid Controls Brochure (pdf)Brochure - Trap Primers, Distribution Units and other AccessoriesPDF3 MB
Smith Fluid Controls FlyerFlyer - Trap Primer, Distribution Units and other AccessoriesPDF2 MB
Fluid Controls with Chris RylantFluid Controls with Chris RylantVideo
Fluid Controls Product Line Overview with Jerry McDanal, VP of EngineeringFluid Controls Product Line Overview with Jerry McDanal, VP of EngineeringVideo
Fluid Controls - Trap Primers & Distribution Units with Chris LevinsFluid Controls - Trap Primers & Distribution Units with Chris LevinsVideo
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