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DIMENSIONAL


____________________________________________________________________________________________________

COMPONENT IDENTIFICATION




NO

NAME OF PART

1

Body

2

Closure

3

Stem

4

Seat Ring

5

Ball

6

Seat Insert

7

Trunnion

7-1

Trunnion Block

7-2

Trunnion Block Pin

8

Gland

9

Adapter Plate

10

Stem O-ring/ Lipseal

11

Stem O-ring

12

Gland O-ring

13

Seat O-ring/LIPSEAL

14

Seat Subseal

15

Closure O-ring

16

Trunnion O-RING

17

Backup Ring

18

Gland Seal

19

Body Seal

20

Trunnion Seal

21

Stem Packing

22

Seat Spring

23

Bearing

24

Thrust Washer

25

Sealant Fitting

26

SOcket Bolt

27

Hex/Socket Bolt

28

Stud Bolt

29

Hex Nut

30

Grounding Pin

31

Grounding Spring

32

Key

33

Dowel Pin

34

Relief Plug

35

Drain Plug

36

Mounting Plate

37

Gear Operator

38

Hand Wheel
____________________________________________________________________________________________________

DESIGN AND MANUFACTURING STANDARDS

Basic Design

API 6A

Shell Wall Thickness

API 6A

Face to Face Dimension

API 6A

Flange End Dimension

API 6A

Inspection & Testing

API 6A

Fire Safe Design

API 6FA/BS 6755

BILL OF MATERIALS

NO

NAME OF PART

Carbon Steel NACE

ALLOY - NACE

Stainless Steel NACE

1

Body

1040

4130

A182F316

2

Closure

1040

4130

A182F316.A351CF8M

3

Stem

AISI1045ENP, AISI4140ENP

AISI 4140 ENP

316 SS, 17-4 PHSS

4

Seat Ring

A105ENP.A106ENP

A350 LF2 ENP

316 SS

5

Ball

A105ENP

A350 LF2 ENP

A182F316.A351 CF8M

6

Seat Insert

Nylon, PTFE, PEEK

Nylon, PTFE, PEEK

Nylon, PTFE, PEEK

7

Trunnion

AIS1 1045, AISI 4140

316 SS

7-1

Trunnion Block

AIS1 1045, AISI 4140

316 SS

7-2

Trunnion Block Pin

AISI 410

316 SS

8

Gland

AIS1 1045

316 SS

9

Adapter Plate

AIS1 1045

316 SS

10

Stem O-ring/ Lipseal

Viton/Polymite

Viton GLT/ Polymite

Viton/Polymite

11

Stem O-ring

Viton

Viton GLT

Viton

12

Gland O-ring

Viton

Viton GLT

Viton

13

Seat O-ring/LIPSEAL

Viton/Polymite

Viton GLT/Polymite

Viton/Polymite

14

Seat Subseal

Viton, Graphite

Viton GLT, Graphite

Viton, Graphite

15

Closure O-ring

Viton

Viton GLT

Viton

16

Trunnion O-RING

Viton

Viton GLT

Viton

17

Backup Ring

PTFE, Nylon

PTFE, Nylon

PTFE, Nylon

18

Gland Seal

Graphite SEAL

19

Body Seal

Graphite SEAL

20

Trunnion Seal

Graphite SEAL

21

Stem Packing

Graphite

22

Seat Spring

Inconel X-750, 17-7 PHSS

23

Bearing

PTFE/Carbon Steel

PTFE/316SS

24

Thrust Washer

PTFE/Carbon Steel

PTFE/316SS

25

Sealant Fitting

Carbon Steel/SS Ball Check

316SS/SS Ball Check

26

SOcket Bolt

A574

316 SS

27

Hex/Socket Bolt

A574

316 SS

28

Stud Bolt

A193 B7M

A320 L7M

A193 Gr8

29

Hex Nut

A194 2HM

A194 7M

A194 gr8

30

Grounding Pin

Stainless Steel

31

Grounding Spring

Stainless Steel

32

Key

Carbon Steel

Stainless Steel

33

Dowel Pin

Carbon Steel

Stainless Steel

34

Relief Plug

Carbon Steel

Stainless Steel

35

Drain Plug

Carbon Steel

Stainless Steel

36

Mounting Plate

Carbon Steel

Stainless Steel

37

Gear Operator

Ductile Iron Case/Carbon Steel Worm Gear

38

Hand Wheel

Carbon Steel, Ductile Iron

NOTE: MATERIALS ALSO AVAILABLE IN F321, F347, F51, F53, MONEL, INCONEL, INCOLLOY AND HASTELLOY.
NOTE: METAL-TO-METAL SEATED BALL VALVE DESIGNS ARE AVAILABLE UPON REQUEST.

DESIGN FEATURES AND APPLICATIONS

SCV’s standard ball valves have been design to API highest standards. Complete Split body & Fully welded design offers maximum protection against line pressure and thermal distortion with long life and trouble-free performance. SCV is supplying its products to the Crude oil transport and processing, Power engineering, Water supply systems and Process Industries.

1. Seal Feature
SCV ball valves are produced with spring-loaded seats. This spring load keeps the seat in contact with the ball even in absence of line pressure and makes very efficient seal at low line pressure.As line pressure increases, the seat area creates a piston effect which forces the seat against the ball, therefore a tight seal becomes effective. If the pressure is higher, the force exerted by the seat on the ball is increased by action of the pipeline pressure. Therefore, the higher the line pressure, the greater the piston action.Seats are available in PTFE, R-PTFE, NYLON or others.

2. Self Lubrication
Self lubrication, low friction PTFE is used for stem bearings, stem seals, and body seats. NYLON or other low friction materials are used for seat inserts. Self lubricating seals and stem bearing give predictable operating torque for the life of the valve.

3.  Fire Safe Construction with Secondary Metal Seat
SCV’s ball valves have been fire tested and can be supplied to API RP6F and API 607. The soft seat inserts, irrespective of their materials, will possibly fail when subjected to sudden high temperature conditions. We provide fire-safe design which may substantially prevent leakages through seals when damaged by high temperature. The function of the seats before and after the fire test is shown on the sketches. If the seat inserts are destroyed or burned out, a metal to metal seal is formed between the lower diameter of the seat and ball, while the seat to body seals, the stem packing and the end connections to body seals are designed to resist high temperature and will remain undamaged. (See Figures 1 & 2)







4. Trunnion Mounting
Trunnion mounted stems absorb the thrust from line pressure, preventing excess friction between the ball and seats, so even at full rated working pressure, operating torque stays low. (See Figure 3)



5. Body Vent and Drain
The body cavity may be vented in both open and closed state. (See Figure 4)



6. Double Block and Bleed
The seats are of both-side-sealing type, which means that they seal both on the upstream or downstream side of the ball valve and inside the valve. Whether in the open or closed position, pressure on each side of the ball is blocked from the body cavity by the seat rings engineered to self relieve. No pressure build up can occur in to body cavity. The body cavity can than be vented to the atmosphere or drained through the body port. (See Figure 5)



7. Sealant Fitting
Upon request, sealant lubrication fittings are installed. In the event of seat insert or stem seal damage, external or internal leakage can occur. Emergency sealant injection can save the integrity of the valve by incorporating a sealant seal around the stem or between the seat and the ball until such time the valve may be properly serviced. (See Figures 6, 7 & 8)


8. Antistatic Device
The springs provided at the stem allow the static charges to be led to the piping. In this way, an electrostatic charging of the ball is eliminated. (See Figure 9)

9. Stem Seal with Blow-out Proof Stem
The stem is independent of the ball and is a blow-out proof design. As an integral part, a stem has a flange at its lower side. Owing to such a specific design, the stem flange prevents the stem from blowingout. This feature also allows replacement of stem packing while the valve is under pressure.The torque is transmitted to the ball by generously proportioned mating joint, hence the stem is not affected by the side thrust.





BALL VALVE FLOW COEFFICIENCY (Cv)
The Flow Coefficiency (Cv) of a valve is the rate of gallons per minute of water at 60° F through a fully opened valve at a pressure drop of 1 PSI across the valve.

SIZE
in

PRESSURE

2000

3000

5000

2-1/16

350

320

320

2-9/16

190

185

180

3-1/8

1,000

910

820

4-1/16

1,850

1,760

1,610

7-1/16

4,400

4,300

4,080

9

8,450

8,400

7,980

11

14,250

14,160

13,020

13-5/8

22,790

21,230

16,910

TRUNNION MOUNTED BALL OPERATING TORQUE IN. LBS.

SIZE
in

PRESSURE

2000

3000

5000

2-1/16

1,413

1,843

5,749

2-9/16

1,413

1,843

5,749

3-1/8

4,103

5,405

9,951

4-1/16

5,651

10,196

18,427

7-1/16

12,284

23,095

46,068

9

24,569

44,224

67,566

11

43,979

64,864

92,871

13-5/8

66,216

90,661

120,388

PRESSURE 2000 - Trunnion Mounted Ball Valves - API 6A
DIMENSIONS & WEIGHTS

SIZE
in

BORE

END TO END DIMENSIONS

BODY DIMENSIONS

FLANGED WEIGHT

F

A - RTJ

H1

H2

H3

LB

KG

2-1/16

2.09

1 1 .625

4.44

6.50

8.90

68.2

31

2-9/16

2.59

14.125

5.22

7.28

9.68

79.2

36

3-1/8

3.22

14.125

5.56

8.69

11.09

118.8

54

4-1/16

4.28

17.125

6.50

9.56

11.96

217.8

99

7-1/16

5.16

22.125

8.69

12.19

14.59

598.4

272

9

7.16

26.125

9.47

13.29

15.59

697.4

317

11

11.03

31.125

12.13

16.63

19.78

1696.2

771

13-5/8

13.66

33.125

13.88

18.69

21.84

2193.4

997

PRESSURE 3000 - Trunnion Mounted Ball Valves - API 6A
DIMENSIONS & WEIGHTS

SIZE
in

BORE

END TO END DIMENSIONS

BODY DIMENSIONS

FLANGED WEIGHT

F

A - RTJ

H1

H2

H3

LB

KG

2-1/16

2.09

14.625

4.44

7.28

10.90

118.8

54

2-9/16

2.59

15.125

5.22

8.06

11.64

138.6

63

3-1/8

3.22

15.125

5.56

9.47

13.05

178.2

81

4-1/16

4.28

18.125

6.50

10.34

13.92

319

145

7-1/16

5.16

24.125

8.69

12.97

16.55

697.4

317

9

7.16

29.125

10.38

15.58

19.10

1546.6

703

11

11.03

33.125

12.13

17.41

21.74

1846

839

13-5/8

13.66

38.125

13.88

19.47

23.80

2593

1315

PRESSURE 5000 - Trunnion Mounted Ball Valves - API 6A
DIMENSIONS & WEIGHTS

SIZE
in

BORE

END TO END DIMENSIONS

BODY DIMENSIONS

FLANGED WEIGHT

F

A - RTJ

H1

H2

H3

LB

KG

2-1/16

2.09

14.625

6.50

4.44

8.90

119

54

2-9/16

2.59

18.625

7.28

5.22

9.68

170

77

3-1/8

3.22

18.625

8.69

5.56

11.09

240

109

4-1/16

4.28

21.625

9.56

6.50

11.96

420

191

7-1/16

5.16

28.00

12.19

8.69

14.59

1190

541

9

7.16

33.125

14.80

10.38

17.20

1936

880

11

11.03

39.375

16.63

12.13

19.78

3420

1555

13-5/8

13.66

45.125

18.69

13.88

21.84

5120

2327


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