butterfly valves
22"- 36" (550mm -900mm)large diameter / resilient seated series 35/ 36 Full Flanged22"- 72" (550mm -1800mm)
features
22"-72"(500mm-1800mm)
Bray Controls proudly offers this
line of heavy duty, large diameter,
resilient seated butterfly valves.
The Series 32/33 valves are wafer
versions with the Series 32 valve
rated for 75 psi and the Series 33
designed for a higher rating of
150 psi. The Series 35/36 are full-
flanged versions rated at 75 and
150 psi respectively. This 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, greaterreliability and a proven record of long service life. Engineeringinnovation and exceptional quality are the focus of Bray’s uniquedesign features.
Body (a) One piece wafer or full flanged style. All bodies aredrilled to be compat-ible with ANSI 125/150 or other interna-tionalflange standards. The Series 35/36 may be bolted to allowdownstream flange removal or cross-bolted for maximum resistance toline stresses.
disc (B) The high strength casting is spherically machined, handpolished to provide 360° concentric seating bi-direc-tionalbubble-tight shut off, minimum torque and longer seat life. Thesymmetrical disc profile enhances valve performance– the Cv valuesare higher, turbulence is reduced and pressure recovery isincreased. The disc O.D. clearance is designed to work with allstandard piping.
seaT (c) One of the valve’s key elements is Bray’s unique tongueand groove seat design which fully isolates the body from linemedia. The Bray resilient seat offers lower torque than many valveson the market today, and is excellent for most vacuum services. Thetongue and groove seat to body retention method is the mostadvanced design in the industry, making field replacement simpleand fast. The strategically located molded-in O-ring completelyeliminates the requirement of flange gaskets. The seat isolates thevalve body and stem from line media and has been specificallydesigned to seal with slip-on or weld-neck flanges.
PriMary seaL (d) The primary seal is achieved by preloaded contactof spherically machined hand polished disc hubs with unique moldedseat flat surfaces. This sealing method isolates the flowing mediafrom the stem and body material at all angles of valve discseating.
L
secondary seaL (e) A secondary seal is achieved by an interferencefit of the stem and seat hole diameters.
sTeM (F) Bray’s one piece through stem design is completelyisolated from the flowing media and achieves high torsionalstrength. The stem ends are standardized for direct mounting andinterchangeability with Bray actuators.
TaPer Pins (G) Tangential taper pins of 17-4 PH stainless steel aredriven and mechanically locked for maximum tor-sional capacity andresistance to vibration. O-rings are installed with the driven-intaper pins to insure bubble-tight shutoff under pressure or vacuumconditions.
sTeM PacKinG (H) This advanced V-Type packing design in the Series35/36 is self-adjusting with bi-directional sealing which preventsexternal substances from entering the upper stem bore. This packingis externally adjustable and functions well for vacuum applicationsas well as a third pressure seal in emergency situations. The stempacking in the Series 32/33 is a V-cup self-adjusting design.
c
a
H
adJUsTaBLe PacKinG GLand (i)
A bronze gland allows for field adjust-ment of stem packing withoutremoving
manual operators or power actuators.
(Series 35/36 only)
sTeM BearinG (J) To minimize
bearing friction and operating torque,
heavy wall bronze sleeve bearings are
utilized. (Series 35/36 only)
sTeM BUsHinG (K) Heavy wall
bronze bushing absorbs actuator side
thrusts. (Series 32/33 only)
VerTicaL THrUsT BearinG (L)
A bronze vertical thrust bearing eliminates
disc displacement due to the weight of the
stem and disc.
acTUaTor MoUnTinG FLanGe
and sTeM connecTion (M)
Due to a modular concept of design, all
Bray manual gear operators and
pneumatic or electric actuators mount
directly to Bray valves.
17-4 PH Stainless Steel ASTM A564 Type 630 Cond. H900PacKinG: Buna-N BearinGs: Luberized Bronze (Series 35/36)
BUsHinG: Luberized Bronze (Series 32/33)
specifications
recoMMended
sPeciFicaTions For Bray
series 32/33, 35/36 sHaLL Be:
.
Wafer or double flanged bodies.
.
Tongue-and-groove seat design
with primary hub seal and a molded
O-ring suitable for weld-neck and
slip-on flanges.
. No field adjustments necessary to
maintain optimum field performance.
. Seat totally encapsulates the body
with no flange gaskets required.
. Spherically machined, hand
polished disc edge and hub for
minimum torque and maximum
sealing capability.
. Equipped with non-corrosive bush-
ing and self-adjusting stem seals for
pressure or vacuum on wafer valves.
. On flanged valves, equipped with
packing glands and upper/lower
bronze bearings. The packing gland
to be adjustable without removing
manual operator or actuator.
. Bi-directional and tested to 110%
of full pressure rating.
. Disc stem connected by 17-4 PH tangential
taper pins driven, O-ring sealed, and mechanically locked.
MaTeriaLs seLecTion
22"-72" (550mm-1800mm)
Body:
.
Cast Iron ASTM A126 Class B
.
Ductile Iron ASTM A536 Gr. 65-45-12
.
Cast Steel ASTM A216 Gr. WCB
disc:
.
Cast Iron ASTM A126 Class B
.
Nylon 11 Coated, Cast Iron ASTM A126 Class B
.
ENP Cast Iron ASTM A126 Class B
.
Ductile Iron ASTM A536 Gr. 65-45-12
.
Nylon 11 Coated, Ductile Iron ASTM A536
.
Aluminum Bronze ASTM B148 Alloy C95400
.
Monel. ASTM A494 Grade M-35-1
.
Hastelloy. C-276 ASTM B575 Alloy N10276
.
316 Stainless Steel ASTM A351 CF8M
seaT: . EPDM . Buna-N . FKM*
sTeM:
.
Carbon Steel, Coated
.
Monel. ASTM B164 Alloy UNS04400
.
Hastelloy. C-276 ASTM B575 Alloy N10276
.
304 Stainless Steel ASTM A276 Type 304
TaPer Pins:
THrUsT BearinG: Bronze
Additional materials are available, please consult your Brayrepresentative.
*FKM is the ASTM D1418 designation for Fluorinated Hydrocarbon
Elastomers (also called Fluoroelastomers).
Hastelloy. is a registered trademark of Haynes International,Inc.
Monel. is a registered trademark of The International NickelCompany, Inc.
cvVaLUes-VaLVe siZinG coeFFicienT BrAy SErIES 32/33,35/36
Valve Size Disc Position (degrees)
ins mm 90° 80° 70° 60° 50° 40° 30° 20° 10°
22 550 27,168 22,028 14,562 9,036 5,640 3,510 2,070 916 103
24 600 33,154 27,186 18,235 11,040 6,962 4,244 2,387 1,028 259
26 650 36,220 29,700 19,921 12,496 7,824 4,890 2,752 1,141 289
28 700 41,619 34,683 22,578 13,838 8,636 5,399 3,133 1,324 295
30 750 52,443 43,003 28,844 18,090 11,328 7,080 3,986 1,652 420
32 800 60,658 48,558 32,591 20,410 12,743 7,983 4,636 2,026 550
34 850 68,374 55,438 36,648 22,741 14,194 8,834 5,210 2,304 533
36 900 77,089 59,667 40,086 25,053 15,572 9,790 5,936 2,775 740
40 1000 90,175 73,990 50,406 30,636 19,307 11,862 6,925 2,971 757
42 1050 102,989 83,421 54,584 35,016 21,010 12,997 7,879 3,502 783
44 1100 112,960 87,430 58,740 36,712 22,818 14,346 8,698 4,066 904
46 1150 122,560 99,372 65,692 40,763 25,443 15,835 9,339 4,130 956
48 1200 132,888 108,968 70,431 43,853 27,242 17,010 10,365 4,651 1,023
54 1400 168,700 138,334 89,411 55,671 34,583 21,594 13,158 5,904 1,299
60 1500 190,000 154,000 102,000 63,200 39,400 24,500 14,500 6,400 1,480
66 1650 211,000 171,000 113,000 70,200 43,800 27,300 16,100 7,110 1,650
72 1800 244,000 198,000 131,000 81,200 50,700 31,500 18,600 8,220 1,900
PressUre raTinGs
For bi-directional bubble-tight shut off, disc in closed position:Series 32 : 22"-36" 75 psig Series 33 : 22"-36" 150 psig Series 35: 22"-72" 75 psig Series 36 : 22"-72" 150psig
All valves are factory tested to 110% of
their specified pressure rating.
please consult your Bray
coMPonenTs
representative.
TeMPeraTUre ranGe oF seaTs
Type Max Min
EPDM +250°F(121°C) -40°F(-40°C)
Buna-N +212°F(100°C) 0°F(-18°C)
FKM* +400°F(204°C) 0°F(-18°C)
For other seat types consult factory.
noTe: For Seating/Unseating and Dynamic Torque data,
SErIES 32/33 Wafer*
dimensions
Valve Size Mounting Flange Drig. G SerieS32 SerieS 33 L Weight (lb.)
H J KeySize K H J KeySize K
ins mm A B C D e F PCD No. HoLeS HoLe DiA.
22 550 25.50 6.06 21.25 24.06 20.12 8.27 6.50 4 .81 2.50 2.50 4.00 .62x.62 20.51 2.50 4.00 .62x.62 20.56 16.50 400
24 600 27.94 5.94 23.25 25.75 19.50 8.27 6.50 4 .81 2.50 2.50 4.00 .62x.62 22.64 2.50 4.00 .62x.62 22.69 17.56 420
26 650 29.50 6.50 24.46 27.83 21.83 11.81 10.00 8 .71 2.50 2.50 4.00 .62x.62 23.67 2.50 4.00 .62x.62 23.71 18.83 540
28 700 31.11 6.50 26.45 29.76 22.82 11.81 10.00 8 .71 2.50 2.50 4.00 .62x.62 25.74 2.50 4.00 .62x.62 25.78 19.78 580
30 750 34.19 6.56 29.29 32.00 23.00 11.81 10.00 8 .71 3.00 2.50 4.00 .62x.62 28.67 3.00 4.00 .75x.75 28.73 20.81 660
32 800 35.55 7.48 30.39 33.70 26.37 11.81 10.00 8 .71 3.00 2.50 4.00 .62x.62 29.57 3.00 4.00 .75x.75 29.61 21.88 785
34. 850 38.75 7.88 33.00 35.75 26.93 13.78 11.73 8 .81 3.50 3.00 4.00 .75x.75 32.18 3.50 5.25 .88x.62 32.22 23.60 905
36 900 40.69 7.88 35.30 38.25 27.75 13.78 11.73 8 .81 3.50 3.00 4.00 .75x.75 34.54 3.50 5.25 .88x.62 34.60 24.94 1025
*Dimensions for the Series 33 valve are the same except for alarger Key Size, H, J and K dimension.
SErIES 35/36 Double Flanged*
Valve Size Mounting Flange Drig. SerieS 35 SerieS 36 L Weight (lb.)
G H J KeySize K H J KeySize K
ins mm A B C D e F PCD No. HoLeS HoLe DiA.
22 550 29.50 6.06 21.25 24.06 20.12 8.27 6.50 4 .81 2.50 2.50 4.00 .62x.62 20.51 2.50 4.00 .62x.62 20.56 16.50 475
24 600 33.00 5.94 23.25 25.75 19.50 8.27 6.50 4 .81 2.50 2.50 4.00 .62x.62 22.64 2.50 4.00 .62x.62 22.69 17.56 500
26 650 35.25 6.50 24.46 27.83 21.83 11.81 10.00 8 .71 2.50 2.50 4.00 .62x.62 23.67 2.50 4.00 .62x.62 23.71 18.83 675
28 700 37.80 6.50 26.45 29.76 22.82 11.81 10.00 8 .71 2.50 2.50 4.00 .62x.62 25.74 2.50 4.00 .62x.62 25.78 19.78 735
30 750 38.75 6.56 29.29 32.00 23.00 11.81 10.00 8 .71 3.00 2.50 4.00 .62x.62 28.67 3.00 4.00 .75x.75 28.73 20.81 855
32 800 41.75 7.48 30.39 33.70 26.37 11.81 10.00 8 .71 3.00 2.50 4.00 .62x.62 29.57 3.00 4.00 .75x.75 29.61 21.88 1010
34 850 44.69 7.88 33.00 35.75 26.93 13.78 11.73 8 .83 3.50 3.00 4.00 .75x.75 32.18 3.50 5.25 .88x.62 32.22 23.60 1165
36 900 46.00 7.88 35.30 38.25 27.75 13.78 11.73 8 .81 3.50 3.00 4.00 .75x.75 34.54 3.50 5.25 .88x.62 34.60 24.94 1320
40 1000 50.75 8.50 38.37 41.58 30.78 13.78 11.73 8 .81 4.00 3.50 5.25 .88x.62 37.45 4.00 5.25 1.0x.75 37.49 26.56 2140
42 1050 53.00 9.88 41.25 44.25 32.00 13.78 11.73 8 .81 4.00 3.50 5.25 .88x.62 40.20 4.00 5.25 1.0x.75 40.25 27.81 2550
44 1100 55.25 9.88 43.25 46.25 33.12 13.78 11.73 8 .81 4.00 3.50 5.25 .88x.62 42.20 4.00 5.25 1.0x.75 42.25 29.06 2800
46. 1150 57.25 10.88 45.25 48.62 34.88 13.78 11.73 8 .81 5.00 4.00 5.25 1.0x.75 44.08 — — — — 30.00 3075
46. 1150 57.25 10.88 45.25 48.62 34.88 16.34 14.02 8 1.30 5.00 — — — — 5.00 6.00 1.25x.88 44.12 30.00 3075
48 1200 59.50 10.88 47.25 50.62 36.00 16.34 14.02 8 1.30 5.00 4.00 5.25 1.0x.75 46.13 5.00 6.00 1.25x.88 46.18 31.06 3200
54 1400 69.00 15.36 54.12 57.50 40.62 13.78 11.73 8 .81 6.00 5.00 5.25 1.25x.88 51.88 — — — — 37.19 6000
54 1400 69.00 15.36 54.12 57.50 40.62 16.34 14.02 8 1.30 6.00 — — — — 6.00 6.50 1.5x1.0 51.88 37.19 6000
60 1500 73.00 15.00 59.25 63.88 42.62 16.34 14.02 8 1.30 7.00 6.00 6.50 1.5x1.0 57.51 — — — — 40.88 7000
60 1500 73.00 15.00 59.25 63.88 42.62 18.70 15.98 8 1.56 7.00 — — — — 7.00 6.50 1.75x1.5 57.56 40.88 7000
66 1650 80.00 18.00 65.14 69.89 48.62 16.34 14.02 8 1.30 7.00 6.00 6.50 1.5x1.0 62.91 — — — — 44.56 8000
66 1650 80.00 18.00 65.14 69.89 48.62 18.70 15.98 8 1.56 7.00 — — — — 7.00 6.50 1.75x1.5 62.98 44.56 8000
72 1800 86.50 18.00 69.24 73.75 52.25 18.70 15.98 8 1.56 8.50 7.50 8.00 1.75x1.5 67.03 — — — — 47.44 11250
72 1800 86.50 18.00 69.24 73.75 52.25 22.05 19.02 12 1.56 8.50 — — — — 8.50 10.00 2.0x1.5 67.08 47.44 11250
*Dimensions for the Series 36 valve are the same except for alarger Key Size, H, J and K dimension. Dimensions for 46" and54"-72" Series 35 and Series 36 valves differ and arelisted separately.
. Dimensions are for reference only. Consult factory for exactdimensions. Bray reserves the right to change product dimensionswithout notice.
SErIES 32/33 SErIES 35/36
All statements, technical information, and recom-mendations inthis bulletin are for general use only. Consult Brayrepresentatives or factory for the