Butterfly Valves BF Series - Watts · PDF fileButterfly Valves BF Series ... 4 The Watts BF Series Resilient Seated Butterfly Valve is available in sizes 50 ... Wafer type Lug type

Butterfly Valves BF Series

• Available in sizes DN 50 to DN 2600• Actuation possible by standard handle,

gear operator, electric operator orpneumatic operator

• Short face-to-face length• According to DIN 3230, BS 5155,

API 609, ISO 5752-20 and ISO 5211

240664_broch_vlinderklep-gb.qxp 24-01-2005 15:45 Pagina 1

Watts Industries Europe B.V.Kollergang 14, 6961 LZ EerbeekP.O. Box 152, 6960 AD EerbeekThe NetherlandsPhone +31 313 673 720Fax +31 313 654 192E-mail [email protected] www.wattsindustries.com

Watts Ocean B.V.Kollergang 14, 6961 LZ EerbeekP.O. Box 98, 6960 AB EerbeekThe NetherlandsPhone +31 313 673 700Fax +31 313 652 073E-mail [email protected] www.wattsindustries.com

2

BUTTERFLY VALVES BF SERIES

EUROPEAN DIVISIONS OF WATTS WATER TECHNOLOGIES INC.



3

INTRODUCTION 4

RESILIENT SEAT BUTTERFLY VALVES 5

HYDRAULIC SPECIFICATIONS 9

POSITIONING / LOCKING KIT 10

METHOD OF OPERATION 10

CONTENT


4 The Watts BF Series Resilient Seated Butterfly Valve is available in sizes 50 –2600 mm, Wafer or Lug body design. This series was designed to meet thestringent requirements of industrial Applications, Water treatment, distributionsystems, fire protection, heating and plumbing systems, OEM, and whereverpositive shut-off is required for liquids, gases, and lurries.

Incorporating a 16 bar pressure rating for 50 - 300 mm and a 10 bar pressurerating 350 - 600 mm.- The Series BF is constructed of a ductile cast iron body- Electrolytic Nickel Plated ductile iron disc- 416 Stainless Steel shaft- Optional materials are available to meet specific application requirements. - A phenolic backed seat prevents the seat from collapsing or dislodging and is

field replaceable- Available standard seat materials include BUNA-N, EPDM and special factory

orders for Viton

The Watts Series BF Butterfly Valves are designed and manufactured accordingto DIN 3230, BS 5155, and API 609.

INTRODUCTION


BodyDuctile ironFull rating as dead end serviceBenefits: High strength ductile iron lugs

SeatPhenolic backed elastomers Full vacuum service capabilitiesVacuum taps not required Primary & secondary shaft seals (upper and lower)Benefits: Seats cannot be trapped on installation

Non-collasibleMaximum control for disc/seat interferenceReduced seat deformationFlange gaskets are not requiredSuperior shaft support at elastomer/disc interfaceDiscs are machined to match the seat face to provide maximum sealing surfaces with reduced torque & wearEliminates shaft journal exposure to media

DiscMachined & polished disc edge Precision disc flatsBenefits: Wide seating surface ensures positive

bubble tight sealUniform contact around entire circumference minimizing wear, reducing torque & increasing cycle life

Bushings3 low friction bushings totally isolate the shaftfrom the body journalBenefits: Positive shaft alignment

Prevents shaft seizure in the body journalEliminates side loading on actuatorsReduced bushing torques

Shaft Trough Shaft DesignBenefits: Blow out proof shaft, reduces

disc deflectionMaximum shear & torsional strength capabilities

InterchangeabilityFace to face in accordance with DIN 3202 part 3 - K1, ISO 5752-20, and API 609Full lug patternBenefits: Interchangeability with Butterfly

Valves in conformance to industry standardsMaximum sealing capability on various flangesEase of installation

ActuationStandard handleGear operatorElectric operatorPneumatic operatorBenefits: All service requirements met

ISO mounting pad for actuation



5

RESILIENT SEAT BUTTERFLY VALVES

BodyAvailable in Full Lug andWafer style. Face-to-facedimensions comply with DIN3202, part 3, K1(corresponds to ISO 5752-20) and API 609.

Mounting pad ISO5211, part 1Designed for easyadaptation to pneumatic orelectric actuators, gearoperators, and handles.

Nameplate Nameplate is permanentlyattached to body providingdisc, seat, and shaft materialspecifications for quickreference.PTFE BushingsThe PTFE non-corrosive,non-metallic bushing arestrategically located,providing maximum shaftsupport, centralizedalignment for a thru-shaftjournal corrosion andminimize bushing andfrictional torque.

Shaft SealThe bi-directional shaft sealprevents external

contamination of stem areawhile providing back-up

for the primary shaftseal formed by thedisc/seat interface.

One-Piece ShaftThe high strength centralizedblow-out proof Thru-Shaftdesign prevents discdeflection and providesmaximum torsionalcapabilities while maintaininga thin disc profile thus maxi-mizing effective flow area.

Pinned discDisc is attached to shaft bypins which minimizes flowturbulence, resulting inhigher Kv ratings.

DiscDisc edge is machined andpolished to assure leak-proofpositive shut-off whileminimizing operating torque.

Phenolic BackedSeatProvides additional supportmaking it non-collapsible.Secured between body andflange making seatreplacement simple and fast.No flange gaskets areneeded. 360 ° sealingprotects components frommedia and provides primaryshaft seal. Available inEPDM, Viton, and Buna-N.


6


DN 50-250 DN 300-600

6

5

7

2

3

4

5

1

8

Materials1. Body Ductile iron SG 400-122. Disc Ductile iron nickel plated

316 stainless steel Aluminium bronze

3. Shaft 416 stainless steel, 316 stainless steel4. Seat EPDM, NBR, Viton5. Bushing PTFE (DN 50-300), bronze

(DN 350-600)6. O-Rings NBR7. Pin 316 stainless steel8. Key Steel

Seat utilization guide

Buna-N (NBR)Characteristics Excellent mechanical properties (abrasion), good seal with mineral oil, certain

hydrocarbons, aliphatic solventsField of application Hydrocarbon with less than 40% of aromatics, air, natural gas, H2O, sea water, glycol,

brine, alcoholTemperature limits From -20 °C to +90 °CTo avoid with Solvents, Benzene, Xylol

EPDMCharacteristics Good seal with low temperatures, ozone, atmospheric agents, animal and vegetal fat,

alcohol, bases and diluted acids, acetonic solventsField of application Water, sea water, industrial water, steam, brine, abrasive substances, phosphates,

inorganic acids, caustic sodaTemperature limits From -40 °C to +90 °CTo avoid with Oils – Fats, Dry air, Hydrocarbons

Viton (FKM)Characteristics Good resistance to heat, light, atmospheric agents, hydraulic fluids, fuel, hydrocarbons,

gasproofField of application Solvents (acetonics excepted), acids, solid hydrocarbons, basesTemperature limits From -20 °C to +90 °CTo avoid with Steam, Ketone, Alkali, Amino

Article number Body Disc Shaft Seat930.xxx.111 Di-SG400-12 Di-Ni plated SS 416 NBR930.xxx.211 Di-SG400-12 Di-Ni plated SS 416 EPDM930.xxx.311 Di-SG400-12 SS 316 SS 316 NBR930.xxx.411 Di-SG400-12 SS 316 SS 316 EPDM930.xxx.511 Di-SG400-12 Alu-Bronze SS 416 EPDM930.xxx.611 Di-SG400-12 SS 316 SS 316 VITON

Full-lug butterfly valve

Replace xxx by a number to give the diameter of the butterfly valve (e.g. DN80 = xxx.080.xxx). Other diameters(up to 2600) on request.



7Article number Body Disc Shaft Seat920.xxx.111 Di-SG400-12 Di-Ni plated SS 416 NBR920.xxx.211 Di-SG400-12 Di-Ni plated SS 416 EPDM920.xxx.311 Di-SG400-12 SS 316 SS 316 NBR920.xxx.411 Di-SG400-12 SS 316 SS 316 EPDM920.xxx.511 Di-SG400-12 Alu-Bronze SS 416 EPDM920.xxx.611 Di-SG400-12 Alu-Bronze SS 416 NBR920.xxx.711 Di-SG400-12 SS 316 SS 316 VITON

Wafer butterfly valve

Replace xxx by a number to give the diameter of the butterfly valve (e.g. DN80 = xxx.080.xxx). Other diameters(up to 2600) on request.

Dimensions

Wafer type Lug type

B

A

E

D7

D6B

A

E

Aantal gatenØ boutgat

D2

D4

C

D5

Cross section

Mounting pad

L1

DN 300 - 600 DN 50 - 250

Standard Handle - Dimensions

L

M

R

Valve size L M R Weight (kg)50 – 100 mm 267 51 32 0.5125 – 150 mm 345 51 32 0.8200 – 300 mm 353 76 45 1.3

No holes

Ø hole


8


DN (mm) 50 65 80 100 125 150 200A (mm) 273 296 308 346 372 397 480B (mm) 161 175 181 200 213 226 260C (mm) 43 46 46 52 56 56 60H (mm) 8,86 8,86 8,86 11,1 12,7 12,7 15,88E (mm) 32 32 32 32 32 32 45KxL1 (mm) -- -- -- -- -- -- --D2* (mm) 125 145 160 180 210 240 295No holes* (--) 4 4 8 8 8 8 12Ø hole* (mm) M16 M16 M16 M16 M16 M20 M20D4 (mm) 50 50 50 70 70 70 102D5 (mm) 7 7 7 10 10 10 12D6 (mm) 77 77 77 92 92 92 125D7 (mm) 100 120 127 156 190 212 268D8 (mm) 12,6 12,6 12,6 15,77 18,92 18,92 22,1Weight (full-lug) (Kg) 3,7 4,1 4,7 9,0 10,9 14,2 18,2Weight (wafer) (Kg) 2,5 3,2 3,6 4,9 7,0 7,8 13,2

Dimensions (Full-lug / Wafer butterfly valve)

* Full-lug butterfly valves are drilled PN 16 up to DN 300 and PN 10 DN 350 to DN 600. Wafer butterfly valvesare drilled PN 10 / PN 16 - Different drillings on demand.

DN (mm) 250 300 350 400 450 500 600A (mm) 540 624 680 760 801 905 1091B (mm) 292 337 368 400 422 480 562C (mm) 68 78 78 102 114 127 154H (mm) 20,62 -- -- -- -- -- --E (mm) 45 45 45 51,2 51,2 64,2 70,2KxL1 (mm) -- 6,35x32 6,35x32 7,9x40 9,5x46 9,5x46 12,7x60D2* (mm) 355 410 460 515 565 620 725No holes* (--) 12 12 16 16 20 20 20Ø hole* (mm) M24 M24 M20 M24 M24 M24 M27D4 (mm) 102 102 102 140 140 165 165D5 (mm) 12 12 12 18 18 22 22D6 (mm) 125 140 140 197 197 197 276D7 (mm) 325 403 436 488 539 593 693D8 (mm) 28,45 31,6 31,6 33,15 38 41,15 50,65Weight (full-lug) (Kg) 26,8 39,5 55,2 88,5 104,3 179,6 276,7Weight (wafer) (Kg) 19,2 32,5 41,3 53,1 74,8 124,7 199,6

DN Wet Dry Wet Dry10 bar 16 bar

50 13 21 16 2665 15 28 19 3580 21 40 24 46

100 36 66 42 77125 56 97 65 115150 91 160 109 183200 167 287 206 355250 276 470 350 595300 415 676 534 871350 532 798400 730 1096450 979 1468500 1306 1959600 2041 3062

Operating torque (Nm)



The diagram shows Kv coefficient values andcharacteristics of each single nominal diameter.The values are for fully open valves. Kv flow coefficient states the water flow in m3/hcrossing through the valve and creating a drop ofpressure of 1 bar.

LiquidsQ = flow through valve (m3/h)γ = specific gravity (water = 1)∆P = pressure drop across valve (bar)

GasQ = flow through valve (Nm3/h)γ = specific gravity (air = 1)∆P = pressure drop across valve (bar)

(less than 1⁄2 inlet pressure)P1 = outlet pressure (bar)

SteamQ = flow through valve (kg/h)∆P = pressure drop across valve (bar)

(less than 1⁄2 inlet pressure)P1 = outlet pressure (bar)

The diagram shows K pressure drop valuesaccording to the opening degree of the disc.

∆h = pressure drop (mH2O)Ksi = pressure drop coefficient (-)v = nominal velocity (m/s)g = gravity acceleration 9,81 (m/s2)

100

10050 150 200 250 300 350 400 450 500 550 6000

Kv

(m3 /

h)

1.000

10.000

100.000

Kv Flow Coefficient

∆H Pressure Drop

9

HYDRAULIC SPECIFICATIONS

Nominal diameter (mm)

Hea

d los

s co

effic

ient

Ksi

0

3020 40 50 60 70 80 9010

100

1.000

1

10

Valve opening (°deg)


10


Standard Handle Gear operator

For converting standard ten-position handle anddeluxe handle to memory stop, infinite positionstop and a locking device.

Infinite position stop bolt and nut

Indicator / stop plate

Mounting bolts and nuts

Latch plate

Memory stop bolt and nut

POSITIONING / LOCKING KIT

METHOD OF OPERATION

Electric operator Pneumatic operator

InstallationAssure gasket surfaces are free of defects.Valves should not be mounted between flangeshaving defective mating surfaces and shouldnever be used to align improperly positioned pipe.The distance between pipe flanges should bechecked to assure sufficient clearance for valveinstallation.

The valve disc should be positioned inside thebody when being placed between flanges,however, not fully closed.

For wafer valves, the valve must be visuallycentred with respect to the flange faces, while lugvalves may be centred with flange bolts. The valve should be operated to assure thatbinding or interference is eliminated. Flangebolting should be tightened gradually. The flangejoint is complete when the body bottoms againstthe flange faces evenly without gaps. Boltsshould then be tightened sufficiently to preventloosening of the joint.



11

Removal of valvePrior to loosening the flange bolts, follow items 1-4:1. Drain piping.2. Vent line to relieve pressure and close valve.

a. disconnect air or electric lines from actuator b. loosen flange bolts

3. Secure necessary lifting equipment to valveassembly.

4. Remove flange bolts and carefully removevalve.

Caution should be taken due to possibleemission of process material from piping.

The photos and descriptions contained in this brochure are solely intended as an indication. Watts Industries reserves the right to make technical and design changesto its products without prior notice.

MaintenanceWatts BF butterfly valves are designed such thatperiodic maintenance or lubrication is notrequired throughout the life of the valve. Thefollowing practices are suggested:Periodically:1. Operate the valve from fully open to fully

closed.2. Check all fasteners for evidence of loosening

and tighten as required.3. Inspect valve and surrounding area for

previous or existing leakage at flange faces orshaft connections.

4. Check piping and/or wiring to actuators andrelated equipment for looseness, and correctas needed.


Watts Ocean B.V.

Kollergang 14, 6961 LZ Eerbeek, The Netherlands

Phone +31 313 673 700 - Fax +31 313 652 073

E-mail [email protected] - Site www.wattsindustries.com

Product range Watts Industries

- System Disconnectors- Backflow Protection Devices- Check Valves- Safety Units- Safety Relief Valves- Pressure Reducing Valves- Automatic Control Valves- Butterfly Valves- Shut-Off Valves- Measuring Gauges

- Temperature Control- Expansion Vessels- Process Switches- Fuel Products- Gas Products- Electronic Controls- Installation Protection Products- Radiator Valves- System Products- Manifolds and Fittings

57-N

L-U

K-0

5/01


Documents

Butterfly Valves BF Series - Watts · PDF fileButterfly Valves BF Series ... 4 The Watts BF Series Resilient Seated Butterfly Valve is available in sizes 50 ... Wafer type Lug type