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Arrow type back pressure valve is an important tool preventing of blowout. The design of the arrow type back pressure valve allows for an on-site ***ermination of back pressure to be set at surface.
The tool should be connected to needed drilling position in operation.Under normal drilling condition,drilling liquid pass through valve body and water channel to furnish downward.When happened well kick and blowout, underground pressure impel valve body to move upward 14กใ pyramidal face of valve body is fitted tightly against gasket pyramidal face,they can prevent drilling liquid within the drilling from gushing and blowout upward.
Specification of Type Arrow Back Pressure Valve
Type O.D(mm) I.D (mm) Connection Max. Seal Pressure (***)
FJ89 89 33 NC26 35 70
FJ105 105 44 NC31 35 70
FJ121 121 56 NC38 35 70
FJ159 159 70 NC46 35 70
FJ165 165 82 NC50 35 70
FJ168 168 82 NC50 35 70
FJ178 178 82 5-1/2FH 35 70
FJ203 203 82 6-5/8REG 35 70
FJ229 229 82 7-5/8REG 35 70
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| Company: |
Mudanjiang Dongxu Machierny Co.,Ltd
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| Contact: |
Ms. Grace Wang |
| Address: |
Dongxu2st, No5. Aimin District |
| Postcode: |
157011 |
| Tel: |
86 453 6187299 |
| Fax: |
86 453 6290768 |
| E-mail: |
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