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Sphere Rubber Core Annular BOP (Type D)

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It’s made of high quality alloy steel by forging, which features high strength, small volume, low weight, convenient disassembly and transportation. Its external surface has Nickel & Phosphor plating, which has good anti-corrosive property. 

It can be divided into two types: type A is tapered rubber core annular preventer; type D is sphere rubber core annular preventer.
There are two connection methods between roof cover and body of annular preventer, bolt joint and block connection. Round annular preventer consists of five main parts: roof cover, body, piston, ball core and dustproof ring. Taper annular preventer consists of seen main parts: roof cover, anti-wear plate, body, piston, taper core, dustproof ring and supporting column. The sealing of round annular preventer adopts lip-shape sealing ring, it can reduce the abrasion of sealing farthest. The sealing is reliable and the glue core is not easy to turn over. It also has filler effect. The well pressure is helpful to sealing.

Technical Parameters of Sphere Rubber Core Annular BOP (Type D) :

Model

Nominal diameter

(mm)

Working Pressure (MPa/psi)

Closing Oil Volume (L)

Opening Oil Volume (L)

Dimension mm

The Whole Unit Weight (Kg)

A

B

C

D

E

F

FH18-21

179.4

21/3000

21

15

745

769

141

309

37

225

1433

FH18-35

35/5000

21

15

745

797

169

309

31

231

1520

FH23-21

228.6

21/3000

34

22.8

902

838

8

494

48

260

2398

FH23-35

35/5000

42

33

1016

860

110

500

72

262

2986

FH28-21

279.4

21/3000

50

39

1014

870

152

529

52

290

2950

FH28-35

35/5000

6

72

1146

1110

242

676

74

313

4675

FH35-21

346.1

21/3000

94

69

71

1105

170

470

80

345

5738

FH35-35

35/5000

94

69

71

1150

200

670

85

340

6415

FH35-35

425.3

35/5000

220

171

1683

1558

296

1410

428

534

16000

FH35-21

527.0

21/3000

173

110

1375

93

260

569

74

414

6994

FH35-35

539.7

35/5000

241

181

2240

1718

315

01

140

564

20230


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