6-5/8” REG X 10 M LOWER KELLY COCK VALVE

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Item NO.: V028569 MOQ: 0

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ZZC

Type	O.D. (mm)	Water Hole Diameter (mm)	Connection	Working Pressure (Mpa)	Suitable Range
CS146	146	50	4 1/2″REG-LH	35 70 105	Tetragonal and Hexagonal kelly
CS200	200	76	6 5/8″REG-LH	35 70 105	Tetragonal and Hexagonal kelly

Specification of Lower Kelly Cock Valve

Type	O.D. (mm)	Water Hole Diameter (mm)	Connection	Working Pressure (Mpa)	Suitable Range
XS105	105	41	NC31	35 70 105	Tetragonal and Hexagonal Kelly
XS121	121	50	NC38	35 70 105
XS127	127	50	NC38	35 70 105
XS165	165	61	NC46	35 70 105
XS178	178	71	NC50 5-1/2FH	35 70 105

Specifications

Kelly Cock Valve is a manual control valve in drilling string cycle system .

It is one of the effective tools for preventing blowout

It is divided into upper kelly cock valve and lower kelly cock valve.

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.

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