l.d. large diameter butterfly valves. large diameter butterfly valves. company profile c.v.b....

C.V.B. Valvole Industriali s.r.l.

L.L.L.DDD. . . LARGELARGELARGE DIAMETERDIAMETERDIAMETER BUTTERFLY VALVES BUTTERFLY VALVES BUTTERFLY VALVES

COMPANYCOMPANYCOMPANY PROFILEPROFILEPROFILE

C.V.B. valvole industriali S.r.l. is an Italian leading manufacturing company located at 25 Km. north of Milan and

established in 2004 to provide top quality metal to metal triple offsets torque seated quarter turn valve solution

to the Oil and Gas Market. Although their relatively newly built story as Company they can present a thirty year

experience in the Valve Market due to both their management and employees consolidated presence either in the

Industrial and Petrochemical Valve Markets. During these years C.V.B. s.r.l. have performed a constant growth

business wise and size wise following the increased demand for a vast range of products and solutions so far.

Product wise C.V.B. s.r.l. went through an internal re-organization with different product lines in such a way it

would be possible to serve the Market with specific products and services.

Presently the Product Range consist of:

• Triple eccentric metal to metal torque seated quarter turn valve ANSI standard from 3 up to 48” , from

150 up to 900 pressure class– Materials: WCB, LCB, LCC, WCC, WC6, WC9, CF8, CF8M,CF3M,Titanium-

Others according to ASTM Standard- Double Flanged, Lug, Wafer, Butt Welded Type

• Triple eccentric metal to metal torque seated quarter turn valve DIN from 80 up to 1400 diameter, from

PN 10 up to PN 80 pressure class- Materials: Carbon steel: 1.0460-1.0619,Stainless Steel: 1.4581-1.4552,

Alloy Steel: 1.7363-1.7365

• Double eccentric H.P. Valve -Soft Seated, Fire Safe Seat, Metal Seated ANSI standard from 2 up to 24”,

150,300 pressure class – Materials: WCB,CF8,CF8M, Others according to ASTM Standard – Wafer and Lug

Type

• Rubber lined butterfly valves -from 2” up to DN 48”, ANSI 150 and PN from 6 up 25 pressure class-

Materials:Grey and Ductile Iron, WCB, CF8M, Aluminum Bronze, Aluminum – Wafer and Lug Type

• Control Dampers for Hot Air and Fumes up to 700°C- from DN32 up to DN 1200 diameter, PN 6 up to PN

16 pressure class- Materials: Grey and Ductile Iron, WCB,CF8M, Others according to ASTM Standard – Double

Flanged, Wafer and Lug Type

C.V.B. VALVOLE INDUSTRIALI S.R.L.

Via Industria,24 - 20020 Arconate (Mi)

Tel: (+39).0331.461737 Fax: (+39).0331.539175E-mail: [email protected]

Butterfly valve is the most efficient and cost effective system for controlling fluids flow in large diameter pipe

lines.

CVB Series LD Butterffly Valve allows tight shut-off in both directions while providing a very simple design.

They have been supplied since many years in a various different type of applications, such:

• Large diameter water pipelines

• Desalination Plants

• Thermal Power Plants

• Geathermal Power Plants

• Nuclear Power Plants

The main features are:

• Seal located on the disc; easy replaceable without disassemblembling the valve and, even for the large

diameters, without removing the valve from the pipe.

• Seal is continous through 360 degrees, not interrupted by the shaft.

• Double eccentricity which assures long life to the seal as it minimizes rubbing and eliminates seal to seat

contact in the open position ( see Fig 1 )

• Adjustable seal compression is obtained by means of an adjustable seal retaining ring.

• ON-OFF or Control services.

LARGE LARGE LARGE DIAMETERDIAMETERDIAMETER DOUBLE DOUBLE DOUBLE ECCENTRICECCENTRICECCENTRIC BUTTERFLY VALVES BUTTERFLY VALVES BUTTERFLY VALVES SERIESSERIESSERIES LDLDLD




LARGE LARGE LARGE DIAMETERDIAMETERDIAMETER DOUBLE DOUBLE DOUBLE ECCENTRICECCENTRICECCENTRIC BUTTERFLY VALVES BUTTERFLY VALVES BUTTERFLY VALVES SERIESSERIESSERIES LD LD LD

APPLICABLE APPLICABLE APPLICABLE STANDARDSSTANDARDSSTANDARDS

• DESIGN

ASME SEC. VIII

ASME SEC. III

ANSI B 16.34

• FACE TO FACE

ISO 5752 SHORT BODY

• BODY FLANGE DRILLING

ANSI B 16.1 CL. 125

ANSI B 16.5 CL. 150

MSS SP 44 CL.150

AWWA C 207

API 605 CL. 150

BS 3293 CL. 150

ISO 2084 PN 2,5, 6, 10, 16, 25

• TESTING

MSS SP 61

API 598

API 6 D

• MARKING

MSS SP 25

• QUALITY ASSURANCE

ISO 9001:2000

ATEX

PED 97/23/EC - H - Pressure Equipment Certificate

FIRE SAFE Certificate According to API 607—ISO 10497:2004 - API 598—BS 6755 Part 2

•




DESIGN DESIGN DESIGN FEATURESFEATURESFEATURES

BODY

• Flanged type, normally supplied in ductile iron, cast or fabricated steel.

For corrosive service the body can be made in stainless steel, aluminium bronze, special alloy or internally

coated with vulcanized rubber or epoxy resin.

The internal surface of the body can also be nickel plated.

If the body material is stainless steel or aluminium bronze the seat is integral with the body and made of the

same material.

The body can be supplied with bolted or integral supporting legs as optional features.

DISC

• Normally made of the same body material as it is not a seal surface. Disc can be supplied with either the same

body coating or treatment. The edge of the disc is machinel to accept the seal ring.

The disc is designed for the maximum differential pressure at closet valve position. Disc shape keeps the

working stress well within the elastic limit of the material used and these stresses are uniformly distributed.

SEAL RING

• Is clamped to the disc by means of an adjustable retaining ring which has a special cross section designed

to prevent seal extrusion or blowout even in the presence of high differential pressures.

Made of Buna/EPDM with internal metallic support ring which ensures geometric and dimensional stability as

well as easy replacement without using tools in the event of accidental breakage.

SHAFT

• Is a stub shaft design made of high strength stainless steel. Each stub shaft is inserted into the hub of the

disc a minimum of one and half times the shaft diameter ( for heavy duty service the shaft is made in one

piece of solid material )

The shaft is coupled to the disc with taper pins locked by safety nuts. Taper pins assure stiffness to the

connection and prevent loosening. Either shaft and pins are amply designed and oversized for the required

torque at the full rated differential pressure.

BEARINGS

• Internal parts, disc and shaft, are supported by bearings placed in the body hubs. Standard construction

design with self lubricating sintered bronze bearings which allows for a low friction coefficient.

Other bearing materials such as hardened stainless steels are available.

Thanks to the low specific load level, high corrosion resistance and the good lubrification, the bearings have a

very long operative life also in critical conditions.

Bearings have a protection ring on the shaft consisting of O-Rings and special PTFE rings which avoid solid

particles inclusions ( such as sand or impurities ).





STANDARD STANDARD STANDARD CONSTRUCTIONCONSTRUCTIONCONSTRUCTION





STANDARD STANDARD STANDARD MATERIALSMATERIALSMATERIALS


ITEM NAME DUCTILE IRON CARBON STEEL ALUMIN. BRONZE

1 Body ASTM A 536 gr. 60

Chromium pl.td seat

ASTM A 216 gr. WCB

With 316 S.S. seat

ASTM B 148-9D-955

2 Disc ASTM A 536 gr. 60 ASTM A 216 gr. WCB ASTM B 148-9D-955

3 Upper stub shaft ASTM A 182 gr. F6A ASTM A 182 gr. F6A ASTM B 150 C 63000

High strength

4 Lower stub shaft ASTM A 182 gr. F6A ASTM A 182 gr. F6A ASTM B 150 C 63000

High strength

5 Seal Ring ( * ) BUNA/EPDM with

Metallic support

BUNA/EPDM with

Metallic support

BUNA/EPDM with

Metallic support

6 Taper Pin ASTM A 182 gr. F6A ASTM A 182 gr. F6A ASTM B 150 C 63000

High strength

7 Seal Ring Retainer ASTM A 536 gr. 60 ASTM A 216 gr. WCB ASTM B 148-9D-955

9 Bottom flange ASTM A 536 gr. 60 ASTM A 515 gr.60 ASTM B 148-9D-955

10 Cover ASTM A 536 gr. 60 ASTM A 515 gr.60 ASTM B 148-9D-955

11 Thrust bearing screw ASTM B 62 ASTM B 62 ASTM B 62

12 Thrust bearing spacer ASTM A 182 F304 ASTM A 182 F304 ASTM B 62

13 Thr.st bearing washer ASTM A 182 F304 ASTM A 182 F304 ASTM B 150 C 63000

High strength

14 Shaft Bearing Sintered Bronze

ASTM B 62

Sintered Bronze

ASTM B 62

Sintered Bronze

ASTM B 62

15 Bearing protection PTFE PTFE PTFE

16/17/18/19 O-Ring seal ( * ) Synthetic rubber Synthetic rubber Synthetic rubber

20 Nut ASTM A194 gr.8 ASTM A194 gr.8 ASTM B 150 C 63000

High strength

21 Screw ASTM A193 gr.B8 ASTM A193 gr.B8 ASTM B 150 C 63000

High strength

22 Dowel ASTM A193 gr.B8 ASTM A193 gr.B8 ASTM B 150 C 63000

High strength

23 Screw ASTM A193 gr.B8 ASTM A193 gr.B8 ASTM B 150 C 63000

High strength

24/25 Screw ASTM A193 gr.B7 ASTM A193 gr.B7 ASTM A193 gr.B8

26 Key ASTM A 193 gr B7 ASTM A 193 gr B7 ASTM A 193 gr B6




DOUBLE DOUBLE DOUBLE FLANGEDFLANGEDFLANGED TYPE TYPE TYPE PNPNPN 2,5 2,5 2,5 --- DN 1000 DN 1000 DN 1000 ––– DN 2400 DN 2400 DN 2400

DN OPERATOR

MODEL

A B C L I F V

1000 740 1020 948 410 200 480 450

1100 790 1070 998 470 200 480 450

1200 850 1110 1038 470 200 480 450

1300 950 1200 1128 530 200 480 450

1400 1000 1250 1178 530 200 480 450

1500 1080 1350 1271 600 263 630 700

Kg

945

1165

1380

1560

1745

2220

1600 1145 1380 1300 600 263 630 700 2455

1800 1280 1600 1501 670 263 630 700 3626

2000 1400 1700 1520 760 263 630 700 4816

2200 1500 1800 1620 760 263 630 700 5350

2400 1630 1840 1640 980 165 950 1400 5765

DIMENSIONS Weight


OVERALL OVERALL OVERALL DIMENSIONSDIMENSIONSDIMENSIONS WITHWITHWITH MANUALMANUALMANUAL OPERATOROPERATOROPERATOR





DOUBLE DOUBLE DOUBLE FLANGEDFLANGEDFLANGED TYPE TYPE TYPE PNPNPN 6 6 6 --- DN 500 DN 500 DN 500 ––– DN 2400 DN 2400 DN 2400


DIMENSIONS Weight

DN OPERATOR

MODEL

A B C L I F V

1000 740 1020 948 410 200 480 450

1100 790 1070 998 470 200 480 450

1200 850 1075 1038 470 200 480 450

1300 950 1250 1171 530 263 630 700

1400 1000 1300 1221 530 263 630 700

1500 1080 1350 1251 600 263 630 700

Kg

985

1215

1430

1760

1950

2300

1600 1145 1380 1281 600 263 630 700 2570

1800 1280 1600 1311 670 263 630 700 3836

2000 1400 1780 1570 760 243 1045 1400 5250

2200 1500 1890 1680 760 243 1045 1400 5890

2400 1630 1980 1752 980 273 1080 1400 6360

500 410 545 484 229 86 370 500 195

600 460 660 562 267 80 310 450 305

700 560 780 667 292 100 420 450 435

750 590 810 697 318 100 420 450 485

800 610 830 717 318 100 420 450 545

900 685 960 888 330 200 480 450 870







DIMENSIONS Weight

DN OPERATOR

MODEL

A B C L I F V

1000 740 1020 948 410 200 480 450

1100 790 1120 1041 470 263 630 700

1200 850 1160 1081 470 263 630 700

1300 950 1250 1151 530 263 630 700

1400 1000 1300 1201 530 263 630 700

1500 1080 1335 1104 600 165 950 1400

Kg

1050

1420

1650

1870

2070

2525

1600 1145 1365 1134 600 165 950 1400 2845

1800 1280 1680 1470 670 243 1045 1400 4450

2000 1400 1830 1600 760 273 1080 1400 5700

2200 1515 1905 1660 760 273 1080 1400 6300

2400 1630 2000 1752 980 292,5 1110 1400 6590

500 410 540 475 229 119 340 600 220

600 460 660 562 267 80 310 450 325

700 560 780 667 292 100 420 450 465

750 590 810 697 318 100 420 450 516

800 610 830 717 318 100 420 450 586

900 685 960 888 330 200 480 450 830







DIMENSIONS Weight

DN OPERATOR

MODEL

A B C L I F V

1000 740 1070 991 410 263 630 700

1100 790 1120 1041 470 263 630 700

1200 850 1160 1051 470 263 630 700

1300 950 1250 1141 530 263 630 700

1400 1000 1285 1064 530 165 950 1400

1500 1080 1430 1220 600 243 1045 1400

Kg

1280

1540

1790

2030

2325

2850

1600 1145 1460 1250 600 243 1045 1400 3200

1800 1280 1730 1500 670 273 1080 1400 4730

2000 1400 1850 1566 760 293 1110 1400 6160

2200 1515 1940 1660 760 310 1200 1400 6800

2400 1630 2027 1942 980 310 1200 1400 7230

500 410 540 475 229 119 340 600 228

600 460 690 577 267 100 420 450 375

700 560 820 748 292 200 480 450 505

750 590 850 778 318 200 480 450 640

800 610 870 798 318 200 480 450 720

900 685 1010 931 330 263 630 700 1130





DOUBLE DOUBLE DOUBLE FLANGEDFLANGEDFLANGED TYPE TYPE TYPE PNPNPN 16 16 16 --- DN 1600 DN 1600 DN 1600

DOUBLE DOUBLE DOUBLE FLANGEDFLANGEDFLANGED TYPE TYPE TYPE PNPNPN 6 6 6 --- DN 1200 DN 1200 DN 1200

SAMPLE SAMPLE SAMPLE OFOFOF OVERALL OVERALL OVERALL DIMENSIONSDIMENSIONSDIMENSIONS WITHWITHWITH ELECTRICELECTRICELECTRIC ACTUATORACTUATORACTUATOR





FLOW CAPACITY FLOW CAPACITY FLOW CAPACITY

With valves completely open the flow capacity is

expressed by the numerical coefficient CV shown in the

following table. Fig. 2 graph shows the percentage of

CV at every intermediate angle between 0 and 90 °.

CV represents the rate of flow of water in U.S. gallons

which passes through the valve giving a pressure loss

of 1 psi. at 60 degrees °F. KV is the same coefficient

using metric unit measurement, and represents the

rate of flow measured in m3/h which passes through

the valve creating a pressure loss of 1 Kg/cm2 at 15°C.

The corrispondence between the two formulas is:

• CV = 1,17 x KV

• Using metric unit measurement

Q = Flow rate m3/h

= Differential pressure outlet-inlet Kg/cm2

d = density -( water = 1 ) Kg/dm3

Corrective factor for viscous liquids f

For viscous liquids multiply calculated CV values

by the corrective factors ( f ) shown on the left

side, according to the liquid viscosity , expressed

in degrees Engler °E.

Note: When the liquid temperature is close to the

its saturation temperature, the fluid follows

different fisical rules.





FLOW CAPACITY FLOW CAPACITY FLOW CAPACITY





INSTALLATION, INSTALLATION, INSTALLATION, OPERATIONOPERATIONOPERATION ANDANDAND MAINTENANCEMAINTENANCEMAINTENANCE MANUALMANUALMANUAL

1.0 GENERAL

• Thnk you on having bought CVB valves. We assure you the performance shown in this

catalogue. However proper storage, neat installation, gentle operation and a timely

maintenance enhances valve performance and life.

• Upon delivery, inspect the valve for any shipping damage.

• As per the packing slip placed inside the box, verify the goods received. Items pace loose

within the box are separately identified in the packing slip. Check for short supply if any.

2.0 STORAGE

• Store all valves duly covered by plastic bags until installation.

• CAUTION: avoid possible entry of any foreign particles such as dirt, mud, sand, etc. into

the valve and actuators in order to protect the valve seat and actuator mechanism.

• If the storage or service requirement is delayed beyond 6 months, then clean the valve

seat and disc sealing edge by silicon emulsion and operate the valve 3 or 5 times, from

open to close position and keep the valve in slightly open position before installation.

3.0 INSTALLATION

• Valve may be installed in any position - horizontal, vertical or any angle and for in either

direction.

• Ensure that specification mentioned over the name plate are in line with requirements as

regards to valve size, material of construction, working pressure and temperature

• Alignment and proper supports for the piping are essential to prevent stresses in the

Valve.

• CAUTION: Ensure to blow-out or flush-out from the pipeline thorouhgly before the

installation.

• Ensure that the valve is freely accessibile to the operator and sufficient head room is

available for operation.

4.0 OPERATION

• Operate the valve slowly from “ close “ to “ open “ position and ensure free movement

( clockwise-close ) if disc is touching to pipe ID, it indicates that valve is not properly

mounted in line with the pipe centerline. Adjust the valve till operates freely.

• Ensure valve clamping between pipeline flanges are properly clamped, tightened in full

quantity.





INSTALLATION, INSTALLATION, INSTALLATION, OPERATIONOPERATIONOPERATION ANDANDAND MAINTENANCEMAINTENANCEMAINTENANCE MANUALMANUALMANUAL

5.0 MAINTENANCE

• Periodically inspect conditions of external valve parts. Replace the parts showing excessive

wear/corrosion.

• If it is found that valves are leaking in closed position then replace the elastomer seal ring with

a new one. For repleacement of the seal ring, follow the procedure given below

6.0 SEAL REPLACEMENT:

. Remove the pressure from the pipeline and drain it completely.

. Remove the valve from the pipeline ( applicable for small diameters ). Ensure the valve

is in closed position prior the removal of the valve from pipeline.

. Keep the valve in open position and unsrew the seal retainer screws, remove the worn

out/damaged seal ring

. Clean the seal ring clamping area in the disc thoroughly..

. Place the new seal ring and fix the seal retainer to the disc with screws untightened.

. Clean the valve properly.

. Tighten then all the seal retainer screws.

. Close the valve and reinstall it on the pipeline. For large diameter valves the above

substitution can be done without removing the valve from the pipeline.

7.0 STEM SEAL O-RINGS REPLACEMENT

. When it is found a leakage from upper stem, it is time to change stem seal o-rings.

. Remove the pressure from the pipeline and drain it completely.

. Remove the valve from the pipeline ( applicable for small diameters ). Ensure the valve

is in closed position prior the removal of the valve from pipeline.

. Remove the actuator from the valve top flange.

. Remove the bearings with their protection o-rings.

. Clean either the bearing housings in the shaft and the o-ring housing in the bearings.

. Replace o-rings with new ones and reverse the disassembly procedure to reassemble

the valve and then the operator.

• Ensure that all components are properly assembled and all screws are properly tightened.

Re– install the valve




l.d. large diameter butterfly valves. large diameter butterfly valves. company profile c.v.b....

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