A-T ARMATUREN LTD.

SCHROEDAHL & ARAPPMade in Germany

Triple EccentricMetal Seated

Butterfly Valves

Triple EccentricMetal Seated

Butterfly Valves

TABLE OF CONTENTS PAGE No.

A-T ARMATUREN LTD.

http://www.schroedahl.com

http://www.a-tcontrols.com

Manufacturing profile 1

Triple off-set theory 2

Seal and Seat combination 3

Cast Steel 4

Stainless Steel 5

6

Dimensions 150#, 300#, 600# 7

Gear Operartor 8

Dimensions and Weights

Valve Design:

Face to Face

Dimension:

End Flange

Dimensions:

Butt Weld Ends:

Test:

Fire Test:

Certificates:

API 6D

API 6A

ISO 9001

API 6FA, API 607

API 6D, ASME B16.34,

ASME B 31.3

ASME B16.10

ASME B16.5, ASME B16.47

MSS SP 44

ASME B 16.25

API 6D, API 598

API 6FA, API 607

Standard

Manufacturing

1

A-T ARMATUREN LTD. OEM

manufacturing in Schroedahl &

Arapp Spezial Armaturen Co KG,

A&T has, over a period of years,

established a reputation for

manufacturing high technology

valves. Their range of triple and

double offset butterfly valves are

manufactured in sizes from 80mm

to 2500mm and pressures from

10 Bar (class 125) to 260 Bar

(class 2500).

The A&T OEM range of valves are

in use at many of the Water

Boards, Water Authorities,

Municipalities, Mines, Petrochem

and Process plants, and Steel

refineries in Germany, as well as

U.S.A. and the Asia.

The valves are available in wafer,

lugged and double flanged

configurations. A wide variety of

drillings can be accommodated as

well as most European, American

and Asian specifications.

A-T ARMATUREN LTD.

THE TRIPLE OFF-SET DESIGN PRINCIPLE

2

A&T OEM Metal Seating High Pressure butterfly valves provide a bi-directional bubble tight shut off. This is achieved by introducing

state-of -the-art triple eccentric disc geometry.

The valve shaft is off-set against the seal, (1st off-set), and against the centre line of the valve (2nd off-set). The seating edges are

machined with a continuously changing slope from an angle on top of the oval seat ring to an angle at the opposite side (3rd

off-set angular).

This geometry ensures that the seat ring stays clear of the seat except at the final shut-off position, resulting in long seat life and

operating cycles in excess of 500 000.

THE VALVE SEAL AND SEAT COMBINATION

A-T ARMATUREN LTD.3

The valve seal is manufactured from laminated stainless steel with PTFE or graphoil laminate depending on the applications. The seal

is held in position by a bolt-on retaining ring and, together with the stainless seat ring, is easily replaceable.

A gasket prevents leakage around the seal ring. The metal seating valve can operate within a temperature of -249 to + 600 C. Valve

designs for cryogenic applications are available on request.

For low temperature applications, the metal seat can be substituted by a PTFE seat. A&T OEM High Pressure butterfly valves are

manufactured in a wide range of materials to suit most applications.

RETAINING RING

SEAL

SEAT T~ RING

GASKET

A&T OEM metal seating valves are certified fire safe in accordance with BS6755 : Part 2 : 1987, and API 607, AP16FA. The range

has been tested and certified in accordance with API Standards 598.

A-T ARMATUREN LTD.4

Model MSStandard Bill of Material

Flanged version

Parts Name -29 to 400 -29 to 540

1 Body / seat

2 Disc

3. Seal Ring

4. Seal ring retainer

5. Shaft

6. Taper pin

7. Disc key

8. Spiral wound gasket*

9. Retaining screws

10. Thrust bearing washer

11. Thrust bearing screws

12. Unloosening washer

13. Spiral wound gasket*

14. Bottom flange

15. Gland

16. Bracket

17. Stem key

18. Bottom screws

ASTM A216 WCB / AISI 316

ASTM A216 WCB

AISI 430 Laminated

ASTM A515 Gr.60

ASTM A182 Gr..F6a

ASTMA182gr.F6a

ASTMA182gr.F6a

ASTM I316+Grafoil

ASTM A1 93 B8M

400 Series Stainless Steel Hardened

ASTM A193 B8M

ASTMA182gr.F6a Hardened

AISI 316+Grafoil

ASTMA515gr.60

ASTM A105

Carbon Steel

AISI 1040

ASTMA193gr.B7

R

ASTM A216 WC6 /AISI 316

ASTM A216 WC6

AISI 316LN Lamination

ASTM A240 type 316

ASTM A479 type XM 19

ASTM A479 type XM

19 ASTM A479 type XM

19 AISI316+Grafoil

ASTM A1 93 B8M

ASTM A479 type XM19

ASTM A1 93 B8M

ASTM A479 type XM19

AISI 316+Grafoil

ASTMA216 WC6

ASTM A216 WC6

Carbon Steel

AISI 1040

ASTMA193gr.B8

R

R

A216-WCB A216-WC6

A-T ARMATUREN LTD.5

Model MSSTypical Bill of Material (Temperature Range -240 /+540 )

Parts Name

1. Body / Seat

2. Disc

3. Seal ring

4. Seal ring retainer

5. Shaft

6. Taper pin

7. Disc key

8. Spiral wound gasket

9. Retaining screws

10. Thrust bearing washer

11. Thrust bearing screws

12. Unloosening washer

13. Spiral wound gasket

14. Bottom flange

15. Gland

16. Bracket

17. Stem key

18. Bottom screws

19. Pin nut

ASTM A351 CF8M/ Stellite

ASTM A351 CF8M

ASTM A479

Type XM19

ASIM A240 type 316

ASTM A453 gr.660

ASTM A453 gr.660

ASTM A453 gr.660

AISI 316+Grafoil

ASTM A453 gr.660 ASTM A182gr.F316

Stellite

ASTM A193 gr.B8M ASTM A182 gr.F316

Stellite

AISI 316+Grafoil

ASTM A240 type 316

ASTMA182 gr.F316

Carbon Steel

AISI 1040

ASTM A193 gr.B16 ASTM A194 gr.8M

ASTM A351 CF8M

ASTM A351 CF8M

AISI 316LN Lamination

ASTM A240 type 316

ASTM A479 type XM19

ASTM A479 typeXM19

ASTM A479 type XM19

AISI316+Grafoil

ASTM A193 B8M

ASTM A182 B8M Nickel Plated

ASTM A193 gr.B8M

ASTM A182 gr.F316 Stellite

AISI 316+Grafoil

ASTM A240 type 316

ASTMA182 gr.F316

Carbon Steel

AISI 1040

ASTM A193 gr.B16

ASTM A194 gr.8M

-60 to +540 -240 to +540

ASTM A351 CF8M ASTM A351 CF8M*

A-T ARMATUREN LTD.6

Dimensions and WeightsValve Data

Threaded holes D-deep

1 .Suggested orientation is with the valve shaft horizontal or inclined from vertical.

2. All valve materials have been carefully matched to ensure operation to specification, the temperature difference between disc and

external body surface should be limited to 100 . In service above 200 it is therefore recommended that the body is insulated.

3. Directional arrow represents the direction of the higher pressure side of the valve.

4. Flange drilling ANSI B16.5 150#, 300# , 600#, 900#, 1500# & 2500#.

5. Larger sizes available. ANSI 150# up to 72". ANSI 300# and 600# up to 48"

ANSI 900# and 1500# up to 24"

ANSI 2500# up to 12",

A-T ARMATUREN LTD.7

Size 3"-24"ANSI 150#

3

4

6

8

10

12

14

16

18

20

24

304

325

383

440

500

544

594

617

752

784

887

136

157

212

217

254

302

328

355

395

426

490

264

285

332

389

447

491

522

545

644

676

774

234

255

293

350

398

442

469

492

562

594

677

150

150

225

300

500

500

600

600

450

450

450

120

120

175

220

340

340

340

340

310

310

425

60

60

67

67

86

86

119

119

80

80

100

48

54

57

64

71

81

92

102

114

127

154

18

24

25

28

22

26

27

26

29

28

32

21

28

40

57

77

103

150

200

267

332

508

80

100

150

200

250

300

350

45

400

450

500

600

Sizeinch

DN A B C E V F I L DWEIGHT

Kg

Size 3"-24"ANSI 300#

3

4

6

8

10

12

14

16

18

20

24

304

325

413

473

539

573

722

777

810

835

983

136

157

212

231

283

311

362

380

419

444

518

264

285

362

420

467

501

614

664

697

722

911

234

255

323

371

414

448

532

567

600

625

733

150

150

300

500

600

600

450

450

450

450

450

120

120

220

340

340

340

310

425

425

425

480

60

60

67

86

119

119

80

100

100

100

200

48

54

59

73

83

92

117

133

149

159

181

18

24

25

25

26

29

29

32

32

32

38

28

36

54

82

132

155

300

372

490

582

970

80

100

150

200

250

300

350

400

450

500

600

Sizeinch

MM A B C E V F I L DWEIGHT

Kg

Size 3"-24"ANSI 600#

3

4

6

8

10

12

14

16

18

20

24

304

388

457

530

662

751

781

893

933

1051

1175

136

185

238

279

309

346

382

432

454

520

587

264

337

404

458

554

638

668

821

861

979

1100

234

298

355

405

472

541

571

643

683

801

870

150

300

500

600

450

450

450

450

450

700

700

120

220

340

340

310

425

425

480

480

630

630

60

67

86

119

80

100

100

200

200

263

263

48

64

78

102

117

140

155

178

229

229

241

18

25

28

32

32

35

38

38

41

41

48

31

42

90

155

238

346

405

580

830

1090

1680

80

100

150

200

250

300

350

400

450

500

600

Sizeinch

MM A B C E V F I L DWEIGHT

Kg

Dimensions 150#, 300#, 600#

GEAR OPERATORS Quarter Turn Worm Gear

Model Unit

Inch

mm

Inch

mm

Inch

mm

Inch

mm

Inch

mm

Inch

mm

Inch

mm

Inch

mm

Inch

mm

D E Torque(inch.lb)

Notice

Data listed in this catalogue, including pressure / temperature rating, material specifications, and other performance related

data are intended to provide general information and guidelines about A&T products.

For any specific application, users are kindly requested to contact A&T Valve for technical advice. Failure to follow this

request may result in property damage and / or personal injury, for which we shall not be liable.

We assume no responsibility for errors, impropriety or inadequacy relevant to any information provided in this catalogue.

Any information in this catalogue is subject to change without prior notice.

JWG 1

JGW 2

JGW 3

JGW 4

JGW 5

JGW 6

JGW 7

JGW 8

JGW 9

A B C Stem dia Gear Ration

6.0

152

7.6

193

8.6

218

10.7

272

10.7

272

9.4

239

9.4

238

15.8

401

15.8

404

2.3

58

2.9

74

3.4

86

4.2

107

4.2

107

5.2

132

5.2

132

6.7

170

6.7

170

7.50

191

10.5

267

11.5

292

13.2

335

14.2

361

14.8

376

15.7

399

18.4

467

20.0

508

14

360

17

430

20

510

24

610

24

610

30

760

30

760

30

760

36.0

915

3.0

76

3.8

97

4.2

107

4.6

117

4.6

117

5.2

132

5.2

132

6.2

157

6.2

157

1.0

25

1.5

40

2.0

50

2.5

65

2.5

65

3.0

80

3.0

80

4.0

100

4.0

100

30:1

42:1

50:1

55:1

55:

60:1

120:1

70:1

140:1

10,000

19,800

24,700

32,000

59,500

40,000

75,000

81,000

155,000

No Part

Housing

Worm Gear

Indicator Cover

Shaft

Adjusting Bolt

Gear

Worm

Bearing

1

2

3

4

5

6

7

8

Material

A395

A395

A395

AISI 1045

A449

AISI 1045

AISI 1045

CS

A

C

D

18746

8

5

2

B

E

3

A-T ARMATUREN LTD.8

A T SERVOVALVE ENGINEERING-

20010 Ossona , Italy.

Fax: +39-02-90296708

Trunnion Ball Valve Factory

A-T CONTROLS CORPORATION

Cincinnati, Ohio, USA.

www.a-tcontrols.com

Fax: 1-513-247-5462

Floating Ball Valve Factory

A & T ARMATUREN

67433 Neustadt / Weinstr,

Siegfriedstr 15, Germany.

Fax: +49-6321-34657

Control & Instrumenation

Room 1206 Chevalier House, 45-51 Chatham Road South,

TsimShaTsui, HongKong.

http://www.a-tcontrols.com

http://www.schroedahl.com

Logistic distribution Centre

E-mail:atvalve@biznetvigator.com

: 45-51 1206

: 6 618

: 111 4F

Tel: 852-25073069 Fax: 852-25074599

Tel: 010-63101382 Fax: 010-63103936

Tel: 020-87373329 Fax: 020-87383699

A-T ARMATUREN LTD.

http://www.schroedahl.comhttp://www.a-tcontrols.com

Germany manufacturer of A-T

Armaturen Ltd wholly owned subsidary

under K. Wah International Ltd.

http://www.schroedahl.com

fax:+49-9131-6907140