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FLOAT VALVE SUB

TECHNICAL SUMMARY

API standard drill pipe float valve is one of necessary tool for drilling, it consists of float valve sub and float valve, the main function are to prevent drill cuttings come into mud when connecting each joint and the bit bore block caused by back flow of silt.
Engineered with precision and designed to regulate fluid flow, our high-quality float valves ensure optimal performance and dependable sealing. Crafted from durable materials, these valves offer superior resistance to corrosion, abrasion, and harsh operating conditions. With their innovative design and advanced functionality, float valves play a vital role in preventing backflow, maintaining pressure control, and enhancing safety in oilfield operations. Trust in our float valve solutions to optimize fluid control, increase efficiency, and achieve smooth-running operations in your oilfield projects.
1. Plunger-type float valves:
The Model F is a plunger-type float valve that provides a positive instantaneous shut off, providing constant fluid control while drilling. The Model F is a reliable and economical selection under standard drilling operations.
2. Flapper-type float valves:
The Model G is a flapper-type float valve that, when opened, offers an unobstructed bore through the float valve. The uniquely designed flapper closes rapidly to prevent shavings from entering the drill string when circulation stops and also assists primary BOP equipment in maintaining internal pressure control. The valve will fully open when the first joint is raised from the hole, preventing pulling wet joints. 

SPECIFICATION1: FLOAT VALVE SUB

Model

OD mm(inch)

ID mm(inch)

Conn.

Float Valve Type

FZF83

82.6(3 1/4)

31.8(1 1/4)

NC23 B×2 3/8REG B

1R

FZF105

104.8(4 1/8)

31.8(1 1/4)

NC31 B×2 7/8REG B

1F-2R

FZF127

127(5)

50.8(2)

3 1/2REG B×NC38 B

2F-3R

FZF178

178(7)

71.4(2 13/16)

4 1/2REG B×NC50 B

4R

FZF165

165(6 1/2)

71.4(2 13/16)

NC50(B×P)

5R

FZF203

203(8)

71.4(2 13/16)

6 5/8REG B×6 5/8REG B

5F-6R

FZF229/FZF241

229(9)/241(9 1/2)

76.2(3)

7 5/8REG B×7 5/8REG B

5F-6R

SPECIFICATION2: FLOAT VALVE

Model

OD

mm(inch)

OAL

mm(inch)

ID

mm(inch)

Box Conn.

Other Connections

Conn.

Bore Depth

mm(inch)

Conn.

Bore Depth

mm(inch)

1R

42.1(1 21/32)

149.2(5 7/8)

42.9(1 1/16)

2 3/8REG

231.8(9 1/8)

NC23

231.8(9 1/8)

1F-2R

48.4(1 29/32)

158.8(6 1/4)

49.21(1 15/16)

2 7/8REG

254(10)

NC26

241.3(9 1/2)

2F-3R

61.1(2 13/32)

165.1(6 1/2)

61.9(2 7/16)

3 1/2REG

266.7(10 1/2)

NC31

260.35(10 1/4)

3F

71.4(2 13/16)

254(10)

72.2(2 27/32)

/

/

3 1/2FH

355.6(14)

3 1/2F

79.4(3 1/8)

254(10)

80.2(3 5/32)

/

/

NC38

362(14 1/4)

4R

88.1(3 15/32)

211.1(8 5/16)

88.9(3 1/2)

4 1/2REG

325.4(12 13/16)

NC44

331.8(13 1/16)

4F

92.8(3 21/32)

304.8(12)

93.7(3 11/16)

/

/

NC46

425.4(16 3/4)

5R

98.4(3 7/8)

247.6(9 3/4)

99.2(3 29/32)

5 1/2REG

374.6(14 3/4)

NC50

368.3(14 1/2)

5F-6R

121.4(4 25/32)

298.4(11 3/4)

122.2(4 13/16)

7 5/8REG

438.2(17 1/4)

5 1/2FH

431.8(17)

FLOAT VALVE SUB

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