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Float valve sub
The float valve sub is a special tool to Prevent blow out.It is available with plate type float valve sub,arrow-type float valve sub. Drilling Tools
Describe

The float valve sub is a special tool to Prevent blow out.It is available with plate type float valve sub,arrow-type float valve sub.


Specifications





Model

Sub O.D.
  (mm)

Joint connection

Valve O.D.(mm)

I.D.(mm)



FFJT241

241.3

7 5/8REG B*B

0121(5F6R)

76.2



FFJT228

228.6

7 5/8REG B*B

0121(5F6R)

76.2



FFJT209

209.6

6 5/8REG B*B

0121(5F6R)

71.4



FFJT203

203.2

6 5/8REG B*B

0121(5F6R)

71.4



FFJT178

177.8

4 1/2REG B*NC50 B

088(4R)

71.4



FFJT165

165.1

4 1/2REG B*NC50 B

088(4R)

71.4



FFJT159

158.8

4 1/2REG B*NC46 B

088(4R)

71.4



FFJT127

127

3 1/2REG B*NC38 B

061(2F3R)

50.8



FFJT105

104.8

2 7/8REG B*NC31 B

048(1F2R)

38.1


Float   valve recess in bit subs

Dimension in millimetres


Diameter of

valve assembly

Diameter

 of float recess

Length of valve assembly

API REG bit box

Other popular connections



D

AFRa

LFV

Labelb

LR

Dbp

Labelb

LR



Ref.

+0,4 0

(Reference)

±1.6

+0,8 0


±1,6


1R

42,1

42,9

149,2

2 3/8 Reg

231,8

33,3

NC23

231,8


1F-2R

48,4

49,2

158,8

2 7/8 Reg

254,0

38,1

NC26

241,3


2F-3R

61,1

61,9

165,1

3 1/2 Reg

266,7

48,4

NC31

260,4


3F

71,4

72,2

254,0

3 1/2 FH

355,6


3-1/2IF

79,4

80,2

254,0

NC38

362,0


4R

88,1

88,9

211,1

4 1/2 Reg

325,4

74,6

NC44

331,8


4F

92,9

93,7

304,8

NC46

425,4


5R

98,4

99,2

247,6

5 1/2 Reg

374,6

85,7

NC50

368,3


5F-6R

121,4

122,2

298,4

6 5/8 Reg

431,8

108,7

5 1/2 IF

431,8



121,4

122,2

298,4

7 5/8 Reg

438,2

108,7

5 1/2 FH

431,8



121,4

122,2

298,4

8 5/8 Reg

441,3

108,7

NC61

444,5


6F

144,5

145,2

371,5

8 5/8 Reg

514,4

131,8

6 5/8 IF

504,8



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