High reputation Changeable Stabilizer - Arrow Check Valve – LUQI

Arrow check valve (drilling tool check valve) is an important tool used in drilling and workover of oil and gas.It works with the drilling tool in the well. Once the reverse flow, kick or positive circulation stops in the drilling or workover process, the arrow check valve closes rapidly under the action of the spring force of the back circulation press inside the drill tool, which truncates the internal passage of the drill tool and plays the purpose of blowout prevention inside the drill tool.

Main Technical Parameters

Model

OD mm(inch)

ID mm(inch)

MPa

Connect thread

FJ79

79(3 1/8)

25(1)

35、70、105

2 7/8HT PAC

FJ86

86(3 3/8)

25(1)

NC26

FJ111

111(4 3/8)

41.3(1 5/8)

NC31

FJ121

120.7(4 3/4)

54(2 1/8)

NC38

FJ127

127(5)

54(2 1/8)

NC38

FJ159

159(6 1/4)

70(2 3/4)

NC46

FJ165

165(6 1/2)

70(2 3/4)

NC50

FJ178

178(7)

70(2 3/4)

5 1/2FH

FJ203

203(8)

71.4(2 13/16)

6 5/8REG

FJ229

229(9)

76.2(3)

7 5/8REG

Ordering Instructions

1. Specification and dimension, connecting thread when ordering.

2. If you have any special requirements, please elaborate.