• Series 20/21
  • Series 22/23
  • Series 30/31
  • Series 31H
  • Series 31U
  • Series 3A/3AH
  • Series 32/33 & 35/36
  • Series 36H
  • Series 35F
  • Series 39L
  • Resilient Seated
  • Series 32/33 & 35/36

Series 32/33 & 35/36

Additional Info

  • Size Range: S32/33 - 22" - 36" (550mm - 900mm)
    S35/36 - 22" - 120" (550mm - 3000mm)
  • Body Style: Full Flanged
  • Temperature Range: - 20°F to 250°F (-29°C to 121°C)
  • Pressure Ratings: Bidirectional Bubble-tight Shut-Off: to 150 psi (10.3 Bar)
    Body (CWP): 250 psi (17.2 Bar)
  • Body Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
  • Disc Materials: Nylon 11 Coated Ductile Iron, Aluminum Bronze, Stainless Steel, Duplex Stainless Steel, Super Austenitic Stainless Steel, Hastelloy®*, Monel
  • Stem Materials: Stainless Steel, Duplex Stainless Steel, Super Austenitic Stainless Steel, Monel
  • Seat Materials: BUNA-N, EPDM, FKM*
  • Applications: Wastewater, Seawater
  • This butterfly valve series has many of the design features and benefits of the smaller Bray valves, such as high Cv ratings, minimum parts exposed to the line media, greater reliability and a proven record of long service life.

    Series 32-36 Callouts

    [A] BLOW-OUT PROOF STEM: A retaining ring, installed between the machined stem groove and gland retainer step, provides full retention of the stem in the unlikely event of internal stem failure.

    [B] ADJUSTABLE PACKING SYSTEM: Design allows for field adjustment of stem packing without removing manual operators or power actuators. The advanced, self-adjusting V-Type stem packing prevents external substances from entering the upper stem bore.

    [C] PRIMARY & SECONDARY SEALS: These seals prevent line media from coming in contact with the stem or body.Primary Seal is achieved by an interference fit of the molded seat flat with the disc hub. Secondary Seal is created because the stem diameter is greater than the diameter of the seat stem hole.

    [D] STEM BEARINGS: To absorb actuator side thrust and minimize bearing friction torque, upper and lower heavy wall sleeve bearings are utilized.

    [E] VERTICAL THRUST BEARING: A bronze vertical thrust bearing eliminates disc displacement due to the weight of the stem and disc.

    [F] BODY: One piece full flanged style. All bodies are drilled to be compatible with ASME 125/150, PN 10 or other international flange standards. Wafer style bodies are also available.

    [G] DISC: High strength discs are first cast, the sealing edges are spherically machined then either hand polished or the entire disc is Nylon 11 coated. The symmetrical disc profile increases CV values,reduces turbulence and increases pressure recovery.

    [H] SEAT: The replaceable tongue and groove seat to body retention method is the most advanced design in the industry. Molded O-ring eliminates the requirement of flange gaskets. The seat isolates the valve body and stem from line media and has been specifically designed to seal with slip-on or weld-neck flanges.

  • COMPONENTS AND MATERIALS
    Material availability depends on valve size & series. Other materials are available. Please consult your local Bray representative for your specific condition.
    *FKM is the ASTM D1418 designation for Fluorinated Hydrocarbon Elastomers (also called Fluoroelastomers).
    Halar® is a registered trademark of Ausimont U.S.A., Inc.
    Hastelloy® is a registered trademark of Haynes International, Inc.
    Item Name Material Qty.
    1 Body Cast Iron
    Ductile Iron
    Carbon Steel
    316 Stainless Steel
    1
    2 Disc Nickel Aluminum Bronze
    316 Stainless Steel
    304 Stainless Steel
    Aluminum Bronze
    Monel®
    Hastelloy®
    Duplex Stainless Steel
    Super Austenitic Stainless Steel
    1
    3 Stem 416 Stainless Steel
    304 Stainless Steel
    316 Stainless Steel
    17-4 PH Stainless Steel
    Monel®
    Duplex Stainless Steel
    Super Austenitic Stainless Steel
    1
    4 Seat
    Valves 54"(1400mm) and larger are provided with bonded seats
    EPDM
    BUNA-N
    FKM*
    1
    5 Packing BUNA-N 1
    6 Bearings Lubricant Impregnated Bronze
    PTFE Encapsulated Stainless Steel
    1
    7 Thrust Bearing Bronze 1
  • Imperial
    Metric
    • Dimensions and Weights - Imperial - Series 32/33 Wafer
      Note: K dimension is disc chordal dimension at valve face.
      Size in A B C D E F Mounting Flange Drilling G
      PCD No.
      Holes
      Hole
      Dia.
      22 25.50 6.06 21.27 24.12 20.12 8.27 6.50 4 .81 2.50
      24 27.94 5.94 23.28 25.75 19.50 8.27 6.50 4 .81 2.50
      26 29.50 6.50 24.46 27.83 21.83 11.81 10.00 8 .71 2.50
      28 31.11 6.50 26.46 29.83 22.84 11.81 10.00 8 .71 2.50
      30 34.13 6.56 29.29 32.14 23.00 11.81 10.00 8 .71 3.00
      32 35.55 7.48 30.39 33.78 26.38 11.81 10.00 8 .71 3.00
      34 38.75 7.88 33.00 35.82 26.93 13.78 11.73 8 .81 3.50
      36 40.69 7.88 35.30 38.25 27.75 13.78 11.73 8 .81 3.50
    • Dimensions and Weights - Imperial - Series 32/33 Wafer
      Note: K dimension is disc chordal dimension at valve face.
      Size in Series 32 Series 33 L Weight lb
      H J Key Size K H J Key Size K
      22 2.50 4.00 .62x.62 20.51 2.50 4.00 .62x.62 20.56 16.56 400
      24 2.50 4.00 .62x.62 22.65 2.50 4.00 .62x.62 22.70 17.56 420
      26 2.50 4.00 .62x.62 23.71 2.50 4.00 .62x.62 23.76 18.82 540
      28 2.50 4.00 .62x.62 25.74 2.50 4.00 .62x.62 25.78 19.83 580
      30 2.50 4.00 .62x.62 28.68 3.00 4.00 .75x.75 28.73 20.81 660
      32 2.50 4.00 .62x.62 29.59 3.00 4.00 .75x.75 29.65 21.94 785
      34 3.00 4.00 .75x.75 32.18 3.50 5.25 .88x.62 32.22 23.66 905
      36 3.00 4.00 .75x.75 34.57 3.50 5.25 .88x.62 34.62 24.94 1025
    • Dimensions and Weights - Metric - Series 32/33 Wafer
      Note: K dimension is disc chordal dimension at valve face.
      Size mm A B C D E F Mounting Flange Drilling G
      PCD No.
      Holes
      Hole
      Dia.
      550 648 154 540 611 511 210 165 4 21 63.5
      600 710 151 591 654 495 210 165 4 21 63.5
      650 749 165 621 707 554 300 254 8 18 63.5
      700 790 165 672 756 580 300 254 8 18 63.5
      750 868 167 744 813 584 210 165 4 18 76.2
      800 903 190 772 856 670 300 254 8 18 76.2
      850 984 200 838 908 684 350 298 8 21 88.9
      900 1034 200 899 972 705 273 216 8 21 88.9
    • Dimensions and Weights - Metric - Series 32/33 Wafer
      Note: K dimension is disc chordal dimension at valve face.
      Size mm Series 32 Series 33 L Weight kg
      H J Key Size K H J Key Size K
      550 63.5 101.6 18.11 521 63.5 101.6 18x11 522 419 181
      600 63.5 101.6 18.11 575 63.5 101.6 18x11 576 446 191
      650 63.5 101.6 18.11 601 63.5 101.6 18x11 602 478 245
      700 63.5 101.6 18.11 654 63.5 101.6 18x11 655 502 263
      750 63.5 101.6 18.11 728 76.2 101.6 20x12 730 529 299
      800 63.5 101.6 18.11 751 76.2 101.6 20x12 752 556 356
      850 76.2 101.6 20x12 817 88.9 133.4 22x14 818 599 411
      900 76.2 101.6 20x12 817 88.9 133.4 22x14 879 633 465

    Series 35/36

    Imperial
    Metric
    • Dimensions - Imperial - Series 35-36 Double Flange - ANSI Class 125/150 Valves
      NOTES: 1. K dimension is disc chordal dimension of valve face.     2. *Denotes preliminary dimensions.     3. These dimensions apply ONLY to the size 72".
      Size
      in.
      A B C D E F Mounting Flange Drilling G
      PCD No.
      Holes
      Hole
      Dia.
      22 31.25 6.06 21.27 24.12 20.12 8.27 6.50 4 .81 2.50
      24 33.00 5.94 23.28 25.75 19.50 8.27 6.50 4 .81 2.50
      26 35.25 6.50 24.46 27.83 21.83 11.81 10.00 8 .71 2.50
      28 37.80 6.50 26.46 29.83 22.84 11.81 10.00 8 .71 2.50
      30 38.75 6.56 29.29 32.14 23.00 11.81 10.00 8 .71 3.00
      32 41.75 7.48 30.39 33.78 26.38 11.81 10.00 8 .71 3.00
      34 44.69 7.88 33.00 35.82 26.93 13.78 11.73 8 .81 3.50
      36 46.00 7.88 35.30 38.25 27.75 13.78 11.73 8 .81 3.50
      40 50.75 8.50 38.27 41.66 30.79 13.78 11.73 8 .81 4.00
      42 53.00 9.88 41.25 44.62 32.00 13.78 11.73 8 .81 4.00
      44 55.25 9.88 43.25 46.72 33.12 13.78 11.73 8 .81 4.00
      48 59.50 10.88 47.25 50.62 36.00 16.34 14.02 8 1.28 5.00
      52 CONSULT FACTORY
      54 S-35 69.00 15.00 54.00 57.50 40.62 13.78 11.73 8 .81 6.00
      54 S-36 69.00 15.00 54.00 57.50 40.62 16.34 14.02 8 1.28 6.00
      56 CONSULT FACTORY
      60 S-35 73.00 15.00 58.39 63.07 44.31 16.34 14.02 8 1.38 7.00
      60 S-36 73.00 15.00 58.39 63.07 44.31 18.70 15.98 8 1.56 7.00
      64 CONSULT FACTORY
      66 S35 80.00 18.00 65.12 70.04 48.75 16.34 14.02 8 1.38 7.00
      66 S36 80.00 18.00 65.12 70.04 48.75 18.70 15.98 8 1.56 7.00
      72 S35 86.50 18.00 69.22 73.90 52.25 22.05 15.98 8 1.56 8.50
      72 S36 86.50 18.00 69.22 73.90 52.25 22.05 19.02 12 1.56 8.50
      78 S35 93.00 18.00 76.37 81.29 55.00 27.00 19.02 12 1.31 8.50
      78 S36 93.00 18.00 76.37 81.29 55.00 27.00 19.02 12 1.56 8.50
      84 S35 99.76 18.00 82.62 87.54 58.88 27.00 23.74 20 1.31 9.50
      84 S36 99.76 18.00 82.62 87.54 58.88 27.00 23.74 20 1.56 9.50
      90 CONSULT FACTORY
      96 CONSULT FACTORY
    • Key Size and Weights - Imperial - Series 35-36 Double Flange - ANSI Class 125/150 Valves
      NOTES: 1. K dimension is disc chordal dimension of valve face.     2. *Denotes preliminary dimensions.     3. These dimensions apply ONLY to the size 72".
      Size
      in.
      Series 35 Series 36 L Weight
      lb.
      H J Key
      Size
      K H J Key
      Size
      K
      22 2.50 4.00 .62x.62 20.51 2.50 4.00 .62x.62 20.56 16.56 475
      24 2.50 4.00 .62x.62 22.65 2.50 4.00 .62x.62 22.70 17.56 500
      26 2.50 4.00 .62x.62 23.71 2.50 4.00 .62x.62 23.76 18.82 675
      28 2.50 4.00 .62x.62 25.74 2.50 4.00 .62x.62 25.78 19.83 735
      30 2.50 4.00 .62x.62 28.68 3.00 4.00 .75x.75 28.73 20.81 855
      32 2.50 4.00 .62x.62 29.59 3.00 4.00 .75x.75 29.65 21.94 1010
      34 3.00 4.00 .75x.75 32.18 3.50 5.25 .88x.62 32.22 23.66 1165
      36 3.00 4.00 .75x.75 34.57 3.50 5.25 .88x.62 34.62 24.94 1320
      40 3.50 5.25 .88x.62 37.44 4.00 5.25 1.0x.75 37.49 26.56 2140
      42 3.50 5.25 .88x.62 40.21 4.00 5.25 1.0x.75 40.25 27.81 2550
      44 3.50 5.25 .88x.62 42.24 4.00 5.25 1.0x.75 42.29 29.06 2800
      48 4.00 5.25 1.0x.75 46.16 5.00 6.00 1.25x.88 46.21 31.06 3200
      52 CONSULT FACTORY
      54 S-35 5.00 5.25 1.25x.88 52.02 37.25 6000
      54 S-36 6.00 6.50 1.5x1.0 52.06 37.25 6000
      56 CONSULT FACTORY
      60 S-35 6.00 6.50 1.5x1.0 56.67 39.12 7000
      60 S-36 7.00 7.50 1.75x1.5 56.72 39.12 7000
      64 CONSULT FACTORY
      66 S35 6.00 6.50 1.5x1.0 62.84 43.80 8000
      66 S36 7.00 7.50 1.75x1.5 62.88 43.80 8000
      72 S35 7.50 8.00 1.75x1.5 67.06 46.92 11250
      72 S36 8.50 10.00 2.0x1.5 67.10 46.92 11250
      78 S35 7.50 8.00 1.75x1.5 74.49 51.28 12950
      78 S36 8.50 8.50 2.0x1.5 74.54 51.28 12950
      84 S35 8.50 8.50 2.0x1.5 80.91 55.66 14500
      84 S36 9.50 10.00 2.5x1.75 80.96 55.66 14500
      90 CONSULT FACTORY
      96 CONSULT FACTORY
    • Dimensions - Metric - Series 35-36 Double Flange - ANSI Class 125/150 Valves
      NOTES: 1. K dimension is disc chordal dimension of valve face.     2. *Denotes preliminary dimensions.     3. These dimensions apply ONLY to the size 1800mm.
      Size mm A B C D E F Mounting Flange Drilling G
      PCD No.
      Holes
      Hole
      Dia.
      550 794 154 540 613 511 210 165 4 21 64
      600 838 151 591 654 495 210 165 4 21 64
      650 895 165 621 707 554 300 254 8 18 64
      700 960 165 672 758 580 300 254 8 18 64
      750 984 167 744 816 584 300 254 8 18 76
      800 1060 190 772 858 670 300 254 8 18 76
      850 1135 200 838 910 684 350 298 8 21 89
      900 1168 200 897 972 705 350 298 8 21 89
      1000 1289 216 972 1058 782 350 298 8 21 102
      1050 1346 251 1048 1133 813 350 298 8 21 102
      1100 1403 251 1099 1187 841 350 298 8 21 102
      1200 1511 276 1200 1286 914 415 356 8 33 127
      1300 CONSULT FACTORY
      1350 1753 381 1372 1461 1032 350 298 8 21 152
      1350 1753 381 1372 1461 1032 415 356 8 33 152
      1400 CONSULT FACTORY
      1500 1854 381 1483 1602 1125 415 356 8 35 178
      1500 1854 381 1483 1602 1125 475 406 8 40 178
      1600 CONSULT FACTORY
      1650 2032 457 1654 1779 1238 415 356 8 35 178
      1650 2032 457 1654 1779 1238 475 406 8 40 178
      1800 2197 457 1758 1877 1327 560 406 8 40 216
      1800 2197 457 1758 1877 1327 560 483 12 40 216
      2000 2362 457 1940 2065 1397 686 483 12 33 216
      2000 2362 457 1940 2065 1397 686 483 12 40 216
      2100 2534 457 2099 2224 1496 686 603 20 33 241
      2100 2534 457 2099 2224 1496 686 603 20 40 241
      2200 CONSULT FACTORY
      2400 CONSULT FACTORY
    • Key Size and Weights - Metric - Series 35-36 Double Flange - ANSI Class 125/150 Valves
      NOTES: 1. K dimension is disc chordal dimension of valve face.     2. *Denotes preliminary dimensions.     3. These dimensions apply ONLY to the size 1800mm.
      Size mm Series 35 Series 36 L Weight kg
      H J Key
      Size
      K H J Key
      Size
      K
      550 64 102 16 x 16 521 64 102 16 x 16 9 421 215
      600 64 102 16 x 16 575 64 102 16 x 16 10 446 227
      650 64 102 16 x 16 602 64 102 16 x 16 11 478 306
      700 64 102 16 x 16 654 64 102 16 x 16 12 504 333
      750 64 102 16 x 16 728 76 102 19 x 19 13 529 388
      800 64 102 16 x 16 752 76 102 19 x 19 13 557 458
      850 76 102 19 x 19 817 89 133 22 x 16 818 601 528
      900 76 102 19 x 19 878 89 133 22 x 16 879 633 599
      1000 89 133 22 x 16 951 102 133 25 x 19 952 675 971
      1050 89 133 22 x 16 1021 102 133 25 x 19 1022 706 1157
      1100 89 133 22 x 16 1073 102 133 25 x 19 1074 738 1270
      1200 102 133 25 x 19 1172 127 152 32 x 22 1174 789 1451
      1300 CONSULT FACTORY
      1350 127 133 32 x .22 1321 946 2722
      1350 152 165 38 x 25 1322 946 2722
      1400 CONSULT FACTORY
      1500 152 165 38 x 25 1439 994 3175
      1500 178 191 45 x 38 1441 994 3175
      1600 CONSULT FACTORY
      1650 152 165 39 x 25 1596 1113 3629
      1650 178 191 45 x 38 1597 1113 3629
      1800 191 203 45 x 38 1703 1192 5103
      1800 216 254 51 x 38 1704 1192 5103
      2000 191 203 45 x 38 1892 1303 5874
      2000 216 216 51 x 38 1893 1303 5874
      2100 216 216 51 x 38 2055 1414 6577
      2100 241 254 64 x 45 2056 1414 6577
      2200 CONSULT FACTORY
      2400 CONSULT FACTORY
    • Valve Type: Bray Series 32 or Series 33 wafer or approved equal.
      Body:
      • Shall be one-piece double flanged design.
      • Flange hole drilling per international flange standard as specified.
      • A non-corrosive bushing and a self-adjusting stem seal shall be provided. No field adjustment shall be necessary to maintain optimum field performance.
      Disc
      • Disc edge and hub on metal discs shall be spherically machined and hand polished for minimum torque and maximum sealing capability.
      Stem:
      • Shall be one-piece design
      • Disc-to-stem connection shall be an internal connection design with no possible leak paths in the disc-to-stem connection. External disc-to-stem connections such as disc screws or pins are not allowed.
      • Stem shall be provided with blow-out proof stem retention system to assure full retention of the stem in the unlikely event of an internal stem failure.
      Seat:
      • Shall be tongue-and-groove seat with a primary hub seal and a molded flange O-ring suitable for weld-neck and slip-on flanges.
      • The seat shall totally encapsulate the body isolating it from the line media and no flange gaskets shall be required.
      Testing: Valve shall be tested to 110% of the rated pressure.
      Pressure Ratings: Valve shall be rated for bubble-tight shut-off at pressure rating shown below.
      All Resilient Seated Series 32 valves (with Standard Disc):
      • 22" - 36" (550mm-900mm) 75 psi (5.2 Bar)
      All Resilient Seated Series 33 valves (with Standard Disc):
      • 22" - 36" (550mm-900mm) 150 psi (10.3 Bar)

      Approvals & Certifications:

      • CE/PED Certification
      • NSF/ANSI 61 - 2008 Certification (Potable Water)
      • SIL Certification
      • ABS Certification
      • Bureau Veritas Certification
      • DNV
    • Valve Type: Bray Series 33 or Series 35 Double Flanged or approved equal.
      Body:
      • Shall be one-piece wafer design.
      • Flange hole drilling per international flange standard as specified.
      • Provided with upper and lower bronze stem bearings to absorb actuator side thrust and minimize friction torque.
      • A non-corrosive bushing and a self-adjusting stem seal shall be provided. No field adjustment shall be necessary to maintain optimum field performance.
      Disc
      • Disc edge and hub on metal discs shall be spherically machined and hand polished for minimum torque and maximum sealing capability.
      Stem:
      • Shall be one-piece design
      • Disc-to-stem connection shall be an internal connection design with no possible leak paths in the disc-to-stem connection. External disc-to-stem connections such as disc screws or pins are not allowed.
      • Stem shall be provided with blow-out proof stem retention system to assure full retention of the stem in the unlikely event of an internal stem failure.
      Seat:
      • Shall be tongue-and-groove seat with a primary hub seal and a molded flange O-ring suitable for weld-neck and slip-on flanges.
      • The seat shall totally encapsulate the body isolating it from the line media and no flange gaskets shall be required.
      Testing: Valve shall be tested to 110% of the rated pressure.
      Pressure Ratings: Valve shall be rated for bubble-tight shut-off at pressure rating shown below.
      Bi-directional Service
      (With downstream flangesand disc in closed position):

      All Resilient Seated Series 35 valves (with Standard Disc):

      • 22" - 120" (550-3000mm) 75 psi (5.2 Bar)
      All Resilient Seated Series 36 valves (with Standard Disc):
      • 22" - 120" (550-3000mm) 150 psi (10.3 Bar)
      Dead-End Service
      (No downstream flanges and disc in closed position):

      All Resilient Seated Series 35 valves (with Standard Disc):

      • 22" - 120" (550-3000mm) 30 psi (2.1 Bar)
      All Resilient Seated Series 36 valves (with Standard Disc):
      • 22" - 120" (550-3000mm) 50 psi (3.4 Bar)

      Approvals & Certifications:

      • CE/PED Certification
      • NSF/ANSI 61 - 2008 Certification (Potable Water)
      • SIL Certification
      • ABS Certification
      • Bureau Veritas Certification
      • DNV
  • Document Type Download
    Resilient Seated Butterfly Valves Brochure PDF
    Technical Manual - Resilient Seated Butterfly Valves PDF
    Operations & Maintenance Manual - Resilient Seated Butterfly Valves PDF
    Safety Manual - Resilient Seated Butterfly Valves PDF
    EU Directives - Resilient Seated Butterfly Valves PDF
    Series 32/33 Recommended Specifications - Detailed PDF
    Series 33/33 Recommended Specifications - Summary PDF
    Series 35/36 Recommended Specifications - Detailed PDF
    Series 35/36 Recommended Specifications - Summary PDF
    Series 32/33 - Sales Reference Drawings PDF
    Series 35/36 - Sales Reference Drawings PDF
    Resilient Seated Sales Reference Drawings PDF