Kelly Valve

• After-sales Service: 1 Year
• Warranty: 1 Year
• Certification: ISO 9001:2000
• Power Source: Pneumatic
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Crude Oil
• Model NO.: Kelly Valve
• Structure: Forged
• Material: Cast Steel
• Transport Package: Export Packaging
• Specification: Kelly Valve
• Trademark: DEENPU
• Origin: China
• HS Code: 84314310
• Production Capacity: 1000

Product Description

Kelly Valve

 

Kelly valve is a manually operated ball type drill stem valve; it is divided into upper Kelly valve and lower Kelly valve. The upper Kelly valve is connected between lower end of swivel and upper end of Kelly; the lower Kelly valve is connected between upper end of drill pipe and lower end of Kelly or connected between lower end of Kelly saver subs. The Kelly valve can be opened on or closed off by only turning the special operating wrench at 90° according to indicating direction. During drilling operation, the Kelly valve shall be connected at upper end and lower end of Kelly. 

The sealing principle for Kelly valve is that the ball is positioned and provided with proceeding stress by the lower seat supported by spring load and a close seal between ball and ball seat is provided. During normal drilling operation, the hole is kept unblocked by turning the stem to be "on" position; In case of kick or blowout, turn the operating stem to be "off" position to close off the internal bore of drill string, the kick or blowout accident is avoided due to a high pressure sealing situation between ball and ball seat. 

When ordering please specify:

1. Upper or Lower type;
2. Tool OD;
3. Working Pressure: 5,000 / 10,000 / 15,000 PSI;
4. Tool connection.

Specifications - Upper Kelly Valve

Model	Product  Code	O.D. (mm)	Thread connection (LH)	I.D. (mm)	Max. Sealing Pressure (MPa)
CS 146K	F021461	146	4 1/2 REG	57.2	68.6
CS 200K	F022001	200	6 5/8 REG	76.2	68.6

Specifications - Lower Kelly Valve

 

Model	Product  Code	O.D. (mm)	Thread connection (LH)	I.D. (mm)	Max. Sealing Pressure (MPa)
XS105K	F021051	105	NC31	40	68.6
XS121K	F021211	121	NC38	44.5	68.6
XS127K	F021271	127	NC38	44.5	68.6
XS140K	F021402	139.7	NC40	57.2	68.6
XS159K	F021591	159	NC46	61	68.6
XS165K	F021653	165	NC46	61	68.6
XS178K	F021781 , F021782	178	NC50 , 5 1/2 FH	71.4	68.6