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Products

Tapered Rubber Core Annular Preventer (Type A)

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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.


Annular BOP (Type A) Specification and Technical Parameters

Model

Nominal Diameter, (mm) 

Working Pressure (MPa/psi)

Closing Oil Volume (L)

Opening Oil Volume (L)

Dimension, (mm)

Weight

 (Kg)

A

B

FHZ18-70

179.4

70/10000

36

27

1200

1250

6293

FHZ28-70

279.4

70/10000

67

66

1465

1653

12290

FHZ35-70

346.1

70/10000

116

117

1554

1742

15190

FHZ43-35

425.4

35/5000

134

134

1680

1590

14100

FHZ54-14

539.7

14/2000

95.3

94.5

1380

1437

7660

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