Kelly Cock Valve

Kelly Cock Valve
Kelly Cock Valve
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The Kelly cock valve is installed in drilling rigs in order to prevent damage to the swivel, mud pump and other drill rig components from pressure buildups. Kelly cocks are to be installed at the upper and lower end of the Kelly.

Specifications
Upper Kelly Cock
Type O.D.(mm) Thread connection (LH) 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 68.6
Lower Kelly Cock
Type 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 68.6

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