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604020 10080

StandardCage

ReducedTrim Cage

Inherent Flow Characteristics

100

80

60

40

20

0

0

% of Travel

%o

fCapacity

DBO(Y)(S)-3CONTROL VALVEDimensions &Weights

A B C

125, 250, CS CS CS

Size 150 300 600 CI NPT1, 300 600 CI CS

NPT (ND (ND-252 (ND- 150 (ND- (ND-

-16) ND-40) 100) (ND-16) 40) 100)2 914 10 1012 1114 334 3 314 314 714 718

(50) (235) (254) (267) (286) (95) (76) (83) (83) (184) (181)

212

1078 1112 1214 438 312 334 334 658 658

(65) (276) (292) (311) (111) (89) (95) (95) (168) (168)

3

1134 1212 1314 412 334 418 418 678 678

(80) (299) (318) (337) (114) (95) (105) (105) (175) (175)

4

1378 1412 1512 512 412 5 538 818 858

(100) (352) (368) (394) (140) (114) (127) (137) (206) (219)

6

1734 1858 20 578 512 614 7 934 934

(150) (451) (473) (508) (149) (140) (159) (178) (248) (248)

8

2138 2238 24 758 634 712 814 1214 1214

(200) (543) (568) (610) (194) (172) (191) (210) (311) (311)

A, Band CDIMENSIONS inches (m m )

1. NPT ava ilab le in 2" o nly.

2. BWE same as 300

3. Weights a re approximate.

SizeCI CS

NPT 125 250 NPT 150 300 600

2 80 85 88 45 85 88 90

(50) (36.3) (39) (40) (20.4) (39) (40) (41)

212

125 130

125 130 135

(65) (57) (59) (57) (59) (61)

3

145 152

145 152 158

(80) (66) (69) (66) (69) (72)

4

190 198

190 198 205

(100) (86) (90) (86) (90) (93)

6

460 480

450 470 485

(150) (209) (218) (204) (213) (220)

8

625 640

600 635 660

(200) (284) (290) (272) (288) (299)

WEIGHTS3 pounds (kg)

D

C

B

A

DSize

35 35R 55 55R 55(A) 55AR 85 85R 85A 85AR 135 135R

2 1238 1238 1514 18

(50) (314) (314) (387) (457)

212

1514 18 1958 2314

(65) (387) (457) (499) (591)

3

1514 18 1958 2314

(80) (387) (457) (499) (591)

4

1514 18 1958 2314

(100) (387) (457) (499) (591)

6

2214 2578 2738 3214

(160) (565) (657) (695) (819)

8

2738 3214

(200) (695) (819)

DDIMENSIONS inches (m m )

Note: G o to lesliec ontrols.co m w eb site for 10/0.4.3 and 10/0.4.4 for Actua tor

dimensions with HOD and Ha ndjac k

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DBO(Y)(S)-3 HUNG CAGE DESIGN

PACKING CONFIGURATIONS

BRAIDED

TEFLON GRAPHITESplit rings allow packing re-placement without removalof a ctua tor. G raphite impreg-na ted P TFE provide s 500F(260C) service temperature,better memory and sealingtha n pure P TFE rings , low-ered stem hysteresis, and isideal for fluids that containsuspended particles.

PTFE - V-RING

Live-loa ded P TFE V-ringpa cking provides the mostmaintenance free stemsea l. The V-ring pa cking isboth pressure energizedand live-loaded by a 304stainless steel spring toautomatically compensatefor packing wear. Maxi-mum service temperatureis 460F (238C).

DOUBLE PTFE

V-RINGInverted s ets of P TFEV-ring packing providetight sealing in valveswhich may be controllingpressure or vacuum atdifferent times. Maximumtemperature 460F (238C).

Unlike competitors valves (which use the cage toco mpress the sea t ring into the bo dy), Leslies ca ge is s us-pend ed in the bo dy from a ma chined s houlder. This e lim-inates bonnet gasket leakage, cage deformation, stickingplugs, seat gasket and body washout which can occurwith cag e retained s ea t des igns. The Leslie hung ca gede sign utilizes a 17-4 P h sta inless steel Belleville loa d ring

STANDARDCAGEThe full ported , s tand a rdca ge , provides ma ximum flowwith minimum pressure drop.The inherent mod ified linea rflow characteristic providesexcellent low flow control,high rangeability and maxi-mum flow per given bodysize.

40% REDUCED TRIMCAGEThis optional cag e reduce sthe maximum Cv and flow to40% of the normal, full portvalve. Used to provide bodyvelocity control, future flowexpandability, or to correctfor oversized valve condi-tions.

ANTI-CAVITATIONCAGE

The Les-Ca v ca ge co ntrolsthe effects of valve cavitationproviding a norma l valve/trimlife expectancy in cavitatingconditions. Diametrically op-posed holes, increase thevalves cavitation index (Kc)and direct impinging flow tothe center of the cage, pre-venting mecha nical trim/bo dydamage.

NOISE REDUCINGCAGE

The Les-Sonic ca ge is d e-signed to reduce fluid gene r-ated noise up to 10dBA insteam, ga s or any compress-ible fluid service. When usedin conjunction with a Les-Sonic silencing orifice, noiseattenua tions o f 15-20dB A ca nbe a chieved.

to maintain a constant seat gasket load, even in tempera-ture cycling service.

The Leslie DB O(Y)(S )-3 Co ntrol Va lves a re specifica llydesigned for high pressure drop service. Pressure drop,high velocities and throttling o cc ur betw een the c ag e w in-dow and the plug, thereby protecting the sea t ring a nd tightshutoff capability of the valve.

HIGH TEMPERATURE

LAMINATED GRAPHITEPrecision die-cut laminat-ed grap hite rings provide areliable, tight stem seal tooperating temperatures of800F (426C).

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DBO(Y)(S)-3 TRIM MATERIAL SELECTION

Maximum ANSI/ISATrim Service 70-2

Temp. Plug Seat Ring Stem Gaskets Shutoff

Standard 500F AIS I 410 S S AIS I Type 400 AIS I Type 316 Filled Type

Balanced (260C ) w /P TFE S ea l S S 1 S S 304 S S IV

High 800F AIS I 410 S S AIS I Type 400 AIS I Type 316 Inc onel

Temperature (426C ) w /Ni-Res is t S ea l S S S tellite S S G ra phite III

Soft-Seated 460F AIS I 410 S S AIS I Type 400 S S AIS I Type 316 Filled Type(238C ) w /P TFE S ea l w /P TFE Ins ert S S 304 S S VI

Balanced Plug design allows line pressure under the

plug to build up above the plug, effectively cancelling out

any unbalanced stem force due to pressure. In addition to

providing smooth, high pressure control, balanced plugs

allow use of small, light, cost effective actuators. Class III,

IV or VI shutoff ca n be provide d.

The pisto n se a l is c ritica l to mainta ining t ight s hutoff in

a ny ca ge valve. The DB OYs heavy c upwa sher style PTFEplug sea l has three times the cross s ectional area a nd wea r

surfac e of co mpetitive valves . This provides tig ht shutoff

longer than competitors designs at both low and high

pressures.

1. Stellite se at op tiona l. S TELLITE is a trademark of Stoody Deloro Stellite, Inc.

SOFT SEATED TRIMBa lance d plug with PTFE

plug seal and an optional seatde sign w ith PTFE inse rt provideANSI Clas s VI bubble tight s hut-off at temperatures up to 460F.

(Flow over seat only)

HIGH-TEMPBALANCED PLUG

Balanced plug with high-temp ni-resist or carbon plugseal provides ANSI Class IIIshutoff at temperatures up to

800F.

STANDARDBALANCED PLUG

Balanced plug design elimi-nate s large stem forces a llow ingthe use of small, cost-effectiveactuators. Provides smooth

throttling control even at pres-sures to 1000 psi. StandardP TFE plug s ea l provides ANSIClass IV tight shutoff to temper-atures of 500F. (Flow over seatonly)

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6"

0 100 200 300 400 500 600 700 800

0 100 200 300 400 500 600 700 800

SHUTOFF PSI

15

16

16

15 16 17 18 19 20

17 18 19 20 21 22 23 24 25

17 18 19 20 21 22

16 17 18 19 20 21 22 23 24 25 26

15 16 17 18 19 20 21 22

16 17 18 19 20 21 22 23 24 25

16

16 17 18 19 20 21 22 23 24 25 26 28 29 30 31

17 18 19 20 21

23211917

16 17 18 19 20 21 22 23 24 25 26

2117 1915 23

2"

212"

3"

4"

8"

35R Spring 38422, Spa n 11.9

55R Spring 41968, Spa n 12.7

55AR Spring 23239, Spa n 12.6

85R Spring 35014, Spa n 11.3


85R Spring 35014, Spa n 12.9


85R Spring 24299, Spa n 12.8


135R Spring 42489, Spa n 12.4

135R Spring 23996, Spa n 11.8

DBO(Y)(S)-3 SHUTOFF TABLE - REVERSE ACTING

27

ACTUATOR SHUTOFF TABLE

For shutoff pressure ab ove this value, cons ult facto ry.

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DBO(Y)(S)-3 SHUTOFF TABLE - DIRECT ACTING

6"

0 100 200 300 400 500 600 700 800

0 100 200 300 400 500 600 700 800

SHUTOFF PSI

14 15 16 17 18 19 20 21 22 23 24

15 16 17 18 19 20 21

15 16 17 18 19 20 21 22 23 24

15 16 17 18 19 20

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

15 16 17 18 19 20 21 22 23 24

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

16 17 18 19 20 21 22 23 24 25 26 27 28 29

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

16

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

2"

212"

3"

4"

8"

35Spring 38422, S pan 10.8

55Spring 41968, S pan 12.7

55A Spring 23239, Spa n 12.0

85Spring 35014, S pan 10.9

55A Spring 24296, Spa n 12.0

85Spring 35014, S pan 12.4

55A Spring 24297, Spa n 12.0

85Spring 24299, S pan 12.4

85A Spring 24301, Spa n 12.4

135Spring 42489, Sp an 12.0

135Spring 23996, Sp an 11.6

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

ACTUATOR SHUTOFF TABLE

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BODY ASSEMBLY:Style: Single seated, top entry bolted bonnet,

globe style bo dy, cag e g uided balanced plug

ANSI Body Ratings:Clas s 125 &250 Cas t Iron

Clas s 150, 300, &600 S teel and Alloy S teel

BODY/BONNET MATERIALS:Ca st Iron, AS TM A126 Clas s B

C a rbon S tee l, AS TM A216 Gr WC B

C hrom e Moly, AS TM A217 G r WC 9

SIZES:2" -8" (50-200mm)

END CONNECTIONS:ANSI Class all Integral Flanged, 2-8"

Thread ed , NPT - 2" only, (ANSI 250 Ca st

Iron B od ies), (ANSI 600 C a rbonSteel &Alloy Steel)

S oc ketwe ld - 2" only, (ANSI 600 Clas s)

Buttweld Ends

DIN Flanges: ND-16, ND-25,

ND-40, ND-64, ND-100

BONNET:Bolted Bonnet, Standa rd

BODY/BONNET BOLTING:AS TM A-193 GR B 7 S tuds

AS TM A-194 G R2H Nuts

STEM PACKING:P TFE V-Rings , -40 to 460F(-22 to 238C)

P TFE/G rap hite, -40 t o 500F(-22 to 260C)

Laminated Graphite,-320 to 800F

(-195 to 426C)

PACKING STUDS, NUTS & FOLLOWER:300 Series Stainless Steel

GASKETS:Bo dy/Bo nnet and S ea t Ring/Bo dy:

Filled 304 stainless steel: 500F (260C) Max.

Inco nel/G rap hite: 800F (426C) Max.

TRIM SIZES:Full P ort

40% reduced

Custom, contact Leslie Application Engineering

PLUG (PISTON) SEAL MATERIALS:S ta nda rd TFE/G raphite

ma x. temp . 500F (Clas s IV shuto ff)

Ni-Resist

ma x. tem p. 800F (Clas s III shutoff)

FLOW CHARACTERISTICS:Modified Linear, Standard

Equal Percentage (w/CAM

Characterized Positioner)

SHUTOFF CLASS (ANSI / ISA 70-2):Standard trim, 0-500F(-18 to 260C)

Max. Class IV (.01% Cv)

Metal/P TFE se ats - Clas s VI, b ubb le

tight to 460F (238C)

High-tem p trim, 0-800F(-18 to 426C),

Class III (.1% Cv)

For optional Class IV or V shutoff above

500F, contact factory

TRIM MATERIAL COMBINATIONS:See chart above

ACTUATORS:Standard:

Spring and Diaphragm

Optional:

P iston, Do uble Acting/S pring Return

Hydraulic

Electric

Electro-Hydraulic

DBO(Y)(S)-3 SPECIFICATIONS

Valve Full Port 40% Red. Les-Sonic Les-Cav Stroke Seat Unbalanced

Size C v1 Ra nge C v

1Ra ng e C v

1Ra nge C v

1Range (in.) Dia. Area (in

2)

2 65 30:1 26 20:1 48 30:1 32 14:1 0.750 2.3 0.14

212 90 40:1 36 25:1 70 40:1 40 17:1 0.875 2.9 0.18

3 125 40:1 50 25:1 97 40:1 63 20:1 1.00 3.5 0.21

4 205 50:1 82 30:1 156 50:1 103 25:1 1.25 4.6 0.28

6 435 50:1 174 30:1 349 50:1 217 25:1 2.00 6.9 0.42

8 760 50:1 304 30:1 579 50:1 304 25:1 2.75 9.2 0.56

DBO(Y)(S)-3 CV TABLE

CASE LIQUID GAS

TYPE FL KC XT

Standard .8 .65 .7

Les Cav .9 .79 N/A

Les Sonic N/A N/A .65

SIZINGCOEFFICIENTS

1. Minimum Cv c ontrollab le is C v from tab le divided by rang ea bility.

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DRAIN VALVES, the presence of condensate in the turbineat s tartup or shutdow n ca n be extremely da mag ing. As the

stea m temperature a nd pressure increase , the drain valves

grad ually throttle close d. These va lves s ee a wide rang e of

conditions, cool condensate followed by increasing tem-

perature a nd press ure.

GLAND SEAL STEAM, valves a re used to maintain cons tant

steam pressure in gland to seal air from turbine.Applica tion req uires HP s tea m, throttling a low flow a t high

DP. Typica lly thes e va lves o pera te in a s plit range mod e.

One pressure signal either loa ds or vents the gland.

ATTEMPERATOR SPRAY, SUPERHEAT, REHEAT - SprayControl valve, is used for controlling steam temperature to

turbine. The purpos e o f valve is to ma intain a tight te m-

perature band resulting in maximum efficiency.

1) Superheat spray, low DP, turndown and accuracy are

important.

2) Rehea t spray, high DP, with Cavitation a nd s ea t leakage

concerns as the valve operates close to the sea t.

ApplicationsFEEDWATER CONTROL regulates level of water in boiler

drum. A 1 - 3 drum d esign is c ommonly ba sed on HP, IP &

LP a pplica tions. Valve receives wa ter flow from pump a nd

supplies water to drum to make up for that used to pro-

duce s team.

FEEDWATER RECIRCULATION valve insures that a deq uateflow is maintained through feedw ater pump. The pump

manufacturer calculates minimum flow required to preventrisk of prema ture pump fa ilure d ue to b ea rings overhea ting

or exce ss ive thermal expans ion o f impeller blades .

AUXILIARY STEAM PRESSURE REDUCTION

1) S oo t Blowe rs increa se the rmal efficienc ies. Valve co n-

trols steam supplied to header from super heated source.

PRV sees high pressure drop, intermittent operation and

rapid load sw ings.

2) Building Heat, extraction steam control.

3) Pegging, Deaerators use super heated steam to heat

and remove air from condensate normally closed against

high differential pressure.

DBO(Y)(S)-3 ORDER CODE

U 8 4 1 F 2 A 1 S J 4

1 2 3 4 5 6 7 8 9 10 11

C lass M aterial Valve End Actuator Bonnet Trim Trim Acces-Size C onn. Packing Form M atl. sories

1. 55/R used on 2" D (D )B O Y(S)-3; 55A/AR used on 212" - 4"valves.

2. 85A /AR used on 6" D (D )B O Y(S)-3; 85/R used on 212" - 4"valves.

Class - Position 1U

Material - Position 2, 3 & 4841 = Iron843 = C arbon S teel845 = C hrom e M oly, W C 9XXX = O ther

Valve Size - Position 5F = 2G = 212H = 3J = 4K = 6L = 8

End Connection - Position 61 = Threaded2 = Flanged 150 S teels

Flanged 125 Iron3 = Flanged 300 S teels

Flanged 250 Iron4 = SW E Steels5 = BW E 40 Steels6 = N D 16 S teels & Iron)7 = N D 40 Steels

N D 10 Iron (8" only)8 = Flanged 600 Steels9 = BW E 80 Steels0 = N D 100 SteelsA = R TJ 300 SteelsB = R TJ 600 SteelsC = SW E S ch. 80 SteelsD = N D 64 Steels

Actuator - Position 7A = 35

B = 35RC = 35 HO DD = 35R H O DE = 551

F = 55R 1

G = 55AH = 55AR 1

I = 55 H O D 1

J = 55R H O D 1

K = 55A HO D 1

L = 55AR HO D 1

M = 85/85A2

N = 85R /85AR 2

P = 85/85A H O D 2

Q = 85R/85AR H O D 2

R = 135S = 135RT = 135 H O DU = 135R HO DV = 270W = 270RX = w /o ActuatorY = 270 HO DZ = 270R H O D

Bonnet & Packing - Position 81 = Std. B onnet,

B raided Teflon

G raphite Pkg.2 = Std. B onnet, PTFE P kg.3 = Std. B onnet,

Lam inated G raphite P kg.4 = Std. B onnet,

D ouble Teflon Pkg.

Trim Form - Position 9S = Full C apacityT = R educed 40% C apacityV = Les-C avW = Les-Sonic

Trim Material - Position 10J = Standard 400 SSL = Stellite H ard FacedP = D BO S, H i-Tem p H F

V = TFE Soft SeatAccessories - Position 11

1 = 1 accessory2 = 2 accessory3 = 3 accessory4 = 4 accessory5 = 5 accessory6 = 6 accessory7 = 7 accessory8 = 8 accessory9 = 9 accessory0 = 0 accessory

DIGIDBOY: Spec ify X for Actuator(Po sition 7) S pec ify Actua tor,Mounting Kit and each option

as a separate line item.

See page 39

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12501 Teleco m Drive Tamp a, Florida 33637

(813) 978-1000 FAX: (813)-978-0984

DBO(Y)(S)-3Linear Valve Specification FormP rojec t/J ob _________________________________________ Da ta S he et ________ o f ________

Un it/C us to me r ______________________________________ S pe c _____________________________________

P.O. /LC O File # ______________________________________ Ta g _______________________________________

Ite m _______________________________________________ Dwg ______________________________________

C ontra c t____________________________________________ S ervic e ___________________________________

MFR S eria l# ________________________________________

Fluid Steam Water G a s______________ Liq uid______________ C rit P res P C

Service Conditions Ma x. Flow Norm. Flow Min. Flow S hut-off P res sure

Flow #/hr g pm scfh _________

Inlet P ressure psig psia _________

Outlet Pressure psig psia _________

Tem pe rat ure C F ____________

Ma x P res s /Tem pe ra ture: ____________ /____________

Dens ity/MW/S G __________/__________/___________

Visc os ity _________CP

Vapo r P ressure psia _________

Required Cv _____________ Noise (dB A) Allow a ble_________

Line Info P ipe S ize In____________/S ch____________ P ipe S ize Out ____________/S ch____________

Valve, Body & Bonnet

Bod y Size in. 2 212 3 4 6 8

ANSI Class 125 150 250 300 600 Ot he r____________________

Bo dy/Bo nnet Mate rial: Ca st Iron Cas t S teel Cr Mo Ot he r____________________

End Co nn. Inlet/Outlet: NP T S WE B WE Sc h. ________ Int. Flange s Other__________

Packing Material: P TFE B TG Laminated Graphite DTFE Other__________

Trim Size 100% 40% Les-Cav Les-sonic Ot he r________________

Actuator

Sp ring Action: Air to Open Air to Close Last P osition Other__________ None

Ava ila b le Air S u pp ly P re s s ure : Ma x .__________ Min .__________

Manual Override: Yes No Type____________________

Solenoid Yes No Type____________________ Volta g e_________________

Positioner Yes No Type____________________ Pneu E/P

Switch Yes No Type____________________ Volta g e_________________

Air Set Yes No Type:___________________ Ra ng e:__________________

Other Accessories Yes No Type____________________

Test ANSI/FCI Leaka ge Clas s: III IV V VI

CONTROL VALVE

SPEC SHEET

QUESTIONS? CALL LESLIE CONTROLS @ (813) 978-1000 PLEASE FAX COMPLETED FORM TO: (813) 977-0174

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3-2-3_LC_DBOY