Original Factory Inserted Teeth Drill Bit - Arrow Check Valve – LUQI
Original Factory Inserted Teeth Drill Bit - Arrow Check Valve – LUQI Detail:
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.
Product detail pictures:

Related Product Guide:
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Our purpose would be to offer good quality products at competitive price ranges, and top-notch support to clients around the whole world. We're ISO9001, CE, and GS certified and strictly adhere to their good quality specifications for Original Factory Inserted Teeth Drill Bit - Arrow Check Valve – LUQI , The product will supply to all over the world, such as: Madagascar, Kuwait, Philadelphia, Our products have won an excellent reputation at each of the related nations. Because the establishment of our firm. we have insisted on our production procedure innovation together with the most recent modern day managing method, attracting a sizable quantity of talents within this industry. We regard the solution good quality as our most vital essence character.

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