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Special Price for Drilling Tools Bumper Sub - Throw-Type Back Pressure Valve Type HY – Gaofeng

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Throw-Type Back Pressure Valve Type HY   Model “HY” Throw-Type Back Pressure Valve is an internal preventer. When blowout is going to happen, the Kelly rod should be removed immediately and the back pressure valve assembly should be put into the I.D.  and then pumped downward to the required place. Thus, the blowout can be prevented. Specifications Product Code O.D  mm(in) Connection Pressure  grade  (Mpa) NFQ105 105(4 1/8) NC31 70、105 NFQ127 127(5) NC38 70、105 NFQ159 159(...


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Special Price for Drilling Tools Bumper Sub - Throw-Type Back Pressure Valve Type HY – Gaofeng Detail:

Throw-Type Back Pressure Valve Type HY  

Model “HY” Throw-Type Back Pressure Valve is an internal preventer. When blowout is going to happen, the Kelly rod should be removed immediately and the back pressure valve assembly should be put into the I.D.  and then pumped downward to the required place. Thus, the blowout can be prevented.

Specifications

Product Code O.D  mmin Connection Pressure  grade  Mpa
NFQ105 105(4 1/8) NC31 70105
NFQ127 127(5) NC38 70105
NFQ159 159(6 1/4) NC46 70105
NFQ168 168(6 5/8) NC50 70105
NFQ178 178(7) 5 1/2FH 70105
NFQ184 184(7 1/4) 5 1/2FH 70105

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Special Price for Drilling Tools Bumper Sub -
 Throw-Type Back Pressure Valve Type HY   – Gaofeng detail pictures


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  • Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!
    5 Stars By Mag from Ukraine - 2016.10.25 15:53
    This company has the idea of "better quality, lower processing costs, prices are more reasonable", so they have competitive product quality and price, that's the main reason we chose to cooperate.
    5 Stars By Linda from Holland - 2016.08.18 18:38
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