Kelly Valve
Kelly Valve Type: upper Kelly valve and lower Kelly valveKelly Valve is also called Kelly Cock Valve, which is a manual control valve in drilling string cycle system. It is one of the effective tools for preventing blowout.Upper kelly cock is located at the position between lower end of swivel and the top of kelly stem.Lower kelly cock is located at the position between lower end of kelly stem and drilling rod or kelly stem saver sub.With special spanner according to instruction and requirement to roll operational key 90 degree, so that can achieve to open and close. In order to avoid blowout, it should be assembled kelly cock valve on two ends of kelly stem.When ordering please specify:●Upper or Lower type;●Tool OD;●Working Pressure: 5,000 / 10,000 / 15,000 PSI;●Tool connection.Technical Parameter -- Upper Kelly Valve Model O.D.(mm)Thread connection I.D.(mm) Max.sealing pressure(Mpa) CS 146 146 4 1/2 REG 50 68.6 CS 200 200 6 5/8 REG 76.2 68.6Technical Parameter -- Lower Kelly Valve Model O.D.(mm) Thread connection I.D.(mm) Max.sealing pressure(Mpa) XS105 105 NC31 41.3 68.6 XS121 121 NC38 50 68.6 XS127 127 NC38 50 68.6 XS165 165 NC46 61 68.6 XS178 178 NC50,5 1/2FH 71.4 68.6If you have any further requirements, please feel free to contact us
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