Sway Struts

A sway strut is a device used to restrain movement of piping in one direction while providing for movement due to thermal expansion or contraction in another direction.

Types & Sizes

Technical Information

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    Piping struts,also referred to as sway struts, are devices used to restrain movement ofpiping in one direction while providing for ...Continue Reading


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    General Dimensions & Specifications

    MATERIAL: Carbon steel, except for load pin, which is an Alloy.

    SPECIFICATIONS:
    • Manufacturer’s Standardization Society SP-58
    • Manufacturer’s Standardization Society SP-69
    • ANSI Code for Pressure Piping ANSI B31.1 and ANSI B31.3

    RECOMMENDED SERVICE: Used to restrain movement of piping in one direction while providing for movement due to thermal expansion or contraction in another direction.

    FEATURES:
    • Effective under either tensile or compressive force.
    • Provides 2” to 4” of field adjustment in either direction.
    • Spherical, self-aligning ball bushing at both ends of the strut allows for plus or minus 5 degrees of angular motion or misalignment. Bushings are coated with a dry lubricant.
    • Can be installed in any spatial orientation.
    • Positive control of piping systems are allowed by tight-fitting connections.
    • Finished with standard primer paint or hot dip galvanizing for corrosive conditions.

    HOW TO SIZE:
    1. Select size consistent with maximum load to be restrained.
    2. Determine the distance from structural steel to center of pipe and subtract from it the pipe clamp take-out and the rear bracket (dimension A) for size selected. This will give the required C-to-C dimension. Make sure that the C-to-C dimension listed for the size selected is within the specified minimum and maximum.
    3. Determine the W dimension by subtracting the quantity (2 x dimension F) from the C-to-C dimension.

    ORDERING: Specify figure number, assembly size, name, C-to-C dimension and option number (if other than standard configuration is required) or nominal pipe size or special O.D. The rear bracket assembly may be ordered separately.

    INSTALLATION: Sway strut assemblies are shipped assembled. Securely fasten bracket to structure. Attach strut rod to end bracket, make necessary adjustment in overall length, and fasten clamp to pipe. This assembly is locked by tightening the hex nuts against the extension piece.

    NOTE: Rods should be visible in the sight holes at each end of the strut to assure proper thread engagement. Special lengths are available upon request.

      Download Fig. 2110 PDF

      Fig. 2110: Sway Strut with 4″ of Adjustment

      Fig. 2110: Sway Strut with 4

      NOTE: Rods should be visible in the sight holes at each end of the strut to assure proper thread engagement. Special lengths are available upon request.
      * Load must not be applied outside a 10° included angle to the pipe clamp axis

      ORDERING: Specify figure number, size, type, description, nominal pipe size or special O.D. and C-to-C dimension.

      SIZELOAD lbs.ROD ENDEXT. PIECE PIPE SIZE AC-CW Min.FDD1NRST
      Min.Max.
      A6503/41″
      SCH.80
      1  1/218  3/4609  1/24  5/81  5/81  3/41/413/40.497
      0.495
      B150011  1/2″
      SCH.40
      2  3/820  1/2108105  1/42  1/42  7/83/81  1/81  1/80.747
      0.745
      C450012″
      SCH.40
      2  3/420  1/2120105  1/42  1/23  3/81/21  1/21  1/80.745
      0.745
      180001  1/42″
      SCH.160
      3  3/42412010  1/26  3/434  3/83/41  3/41  3/80.997
      0.995
      2116301  1/22  1/2″
      SCH.160
      3251201173  1/25  3/83/41  3/41  1/20.997
      0.995
      3157001  3/42  1/2″
      SCH.160
      5  5/1625  1/212011  1/275  7/164  11/16121  13/161.248
      1.246
      42070023″
      SCH.160
      5  5/1629  1/2120128  3/45  7/164  11/1612  1/21  13/161.248
      1.246
      5272002  1/43″
      SCH.160
      632  1/2120139  3/45  9/1661  1/42  1/22  1/81.498
      1.496
      6335002  1/24″
      SCH.160
      6  3/435  1/21201311  1/46  1/86  9/161  3/432  3/161.748
      1.746
      76820034″
      SCH.160
      638  1/21201412  1/47  1/85  3/423  1/22  3/81.998
      1.996
      812000046"
      SCH. 160
      7  1/441  1/21201612  3/4148  3/42  1/44  3/42  13/162.498
      2.496

        Download Fig. 2120 PDF

        Fig. 2120: Mini-Sway Strut

        Fig. 2120: Mini-Sway Strut
        ORDERING: Specify figure number, size, type, description, nominal pipe size or special O.D. and C-to-C dimension.

        SIZELOADROD ENDEXT. PIECE PIPE SIZEAC-C (Style 1)C-C (Style 2)DD1NRST
        Min.Max.Min.Max.
        A6503/41″
        SCH.80
        1  1/28  1/89  3/49  5/818  3/41  5/81  3/41/413/40.497
        0.495
        B150011  1/2″
        SCH.40
        2  3/89  3/411  1/211  1/220  1/22  1/42  7/83/81  1/81  1/80.747
        0.745
        C450012″
        SCH.40
        2  3/4101211  1/220  1/22  1/23  3/81/21  1/21  1/80.745
        0.745
        180001  1/42″
        SCH.160
        3  3/411  1/813  1/413  1/82434  3/83/41  3/41  3/80.997
        0.995
        2116301  1/22  1/2″
        SCH.160
        311  3/414  1/214  1/4253  1/25  3/83/41  3/41  1/20.997
        0.995
        3157001  3/42  1/2″
        SCH.160
        5  5/1613  3/81615  7/825  1/25  7/164  11/16121  13/161.248
        1.246
        42070023″
        SCH.160
        5  5/1615  1/21918  1/229  1/25  7/164  11/1612  1/21  13/161.248
        1.246
        5272002  1/43″
        SCH.160
        616  7/820  1/220  3/832  1/25  9/1661  1/42  1/22  1/81.498
        1.496
        6335002  1/24″
        SCH.160
        6  3/418  1/42322  1/435  1/26  1/86  9/161  3/432  3/161.748
        1.746
        76820034″
        SCH.160
        620242438  1/27  1/85  3/423  1/22  3/81.998
        1.996

        * All struts provided with +/- 1″ adjustment from specified C-C dimension.

          Sway Strut Assembly

          Sway strut515
          Fig 515
          HOW TO ORDER: Specify figure number, assembly size, name, nominal pipe size or special O.D., clamp material (alloy or carbon steel) and dimension C-C.

          SERVICE:
          Used to restrain movement of piping in one direction while allowing for movement due to thermal expansion in other directions. Effective for either tensile or compressive force. Self-aligning bushings permit ±5 degrees misalignment or angular motion.

          SIZELOAD (1)ABC-CDD1FGNQRSTW MIN
          MAXMIN
          02,71023/4120172  1/22  3/44  3/441/21  7/811  1/43/48  1/4
          18,0002  1/21  1/412020  1/233  1/26  1/453/42  3/81  1/21  1/219  1/4
          211,6302  1/21  1/212021  1/233  1/26  1/253/42  7/81  1/21  1/2110
          315,70041  3/412026  1/454  3/48  3/4713  1/22  1/221  1/210  1/2
          420,700421202654  3/48713  1/22  1/221  1/211
          527,20042  1/412028  1/854  3/48  5/87  1/213  1/22  1/221  1/212
          633,5005  1/22  1/212032  3/47610  3/49  1/21  1/24  1/23  1/22  3/8212  1/2
          750,6005  1/231203476119  1/21  1/24  1/23  1/22  3/8213  1/2
          871,60063  1/212037  1/476  1/212  1/410  1/21  1/25  9/1642  3/42  1/414  1/2
          995,5008  1/2412041  1/21010141225  9/1653  7/8315  1/2
          10123,2008  1/24  1/212043  3/4101014  3/412  1/226  5/85  1/23  7/8316  1/2

           

           

            Fig. 516 Adjustable Sway Strut Assembly

            Sway strut516

            Fig 516
            HOW TO ORDER: Specify size, figure number, description, normal pipe size or special O.D. and C-to-C dimension.

            SERVICE:
            Used to restrain movement of piping in one direction while allowing for movement due to thermal expansion in other directions. Effective for either tensile or compressive force. Self-aligning bushings permit ±5 degrees misalignment or angular motion.

            SIZEMAX LOAD LBABC-CL-LPIN
            (dia.)
            D
            (dia.)
            Q
            (dia.)
            q
            (dia.)
            RSTWEIGHT (APPROX.)
            MINMAXMINMAXC-C MINC-C MAX
            02,7101  5/83/89173  1/211  1/23/42  1/22.3751.900125/869.3
            18,0002  1/43/41121  1/23  1/214132.3751.9001  1/233/49.914.3
            211,6302  1/43/411223  1/214  1/213  1/22.8752.3751  1/233/412.219.2
            315,7003  1/23/413  1/228  1/23  1/218  1/21  1/24  1/23.5002.8752  1/251  1/828.341.1
            420,7003  1/4113  1/226  5/83  1/216  5/81  1/254.5003.5002  1/251  1/835.251.6

             

              Download Fig. 2110 & 2120 PDF

              Fig. 2110 & 2120: Sway Strut Assemblies

              Fig2120                   

              ORDERING: Specify size, figure number, description, normal pipe size or special O.D. and C-to-C dimension.

              E-TAKEOUT FOR FIG’S 2110 & 2120 SWAY STRUT ASSEMBLIES

              PIPE SIZE

              A

              B

              C

              1

              2

              3

              4

              5

              6

              7

              3/4

              2 7/16

              1

              2 9/16

              1 1/4

              2 11/16

              1 1/2

              4 1/84 1/8

              2

              5 1/85 1/8

              2 1/2

              5 3/85 3/8

              3

              5 15/165 15/16

              4

              6 1/26 1/28 5/810 1/812 1/413 1/216 1/4

              5

              779 7/1610 15/1612 13/1614 5/1616 13/16

              6

              8 9/168 9/169 15/1611 7/1613 5/1614 13/1617 5/1618 9/1620 5/16

              8

              9 9/169 9/1610 1/812 7/1614 9/1615 13/1618 5/1620 1/1621 5/16

              10

              10 5/810 5/811 3/813 3/415 5/816 7/819 7/821 1/822 3/8

              12

              11 5/811 5/812 9/1614 3/416 5/818 3/820 7/822 1/823 3/8

              14

              12 11/1612 11/1613 1/213 1/217 1/41921 1/222 3/424 1/230

              16

              13 11/1613 11/1614 7/814 7/818 3/42022 1/223 3/425 1/231

              18

              14 11/1614 11/1616 1/416 1/416 1/42123 1/225 1/42732

              20

              15 7/815 7/815 7/817 1/417 1/42224 1/226 1/42833 1/2

              24

              17 7/817 7/817 7/819 5/1619 5/1619 5/162728 3/43036

              30

              23 3/823 3/823 3/828 1/428 1/428 1/430 1/231 3/43339

              36

              28 3/428 3/428 3/428 3/434 3/434 3/434 3/434 3/43642
                • Please be as specific as possible using Fig. Number and/or Type. You may also upload files below.
                • If this is an urgent request please use our 24/7 Emergency Request Service!
                • Please attach a drawing, photo, document or other file(s) to help us generate your quote.
                  Drop files here or
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