API 7-1 Kelly Cock Valve/Operated Upper and Lower Kelly Cock Valve

• Certification: API
• Standard: ASME, ANSI, GB, API8c
• Surface Treatment: Spray-Paint
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: API LOWER IBOP, inside BOP/Kelly valve for Varco T
• Manufacturing Process: Forging
• Material: Carbon Steel
• Transport Package: Standard Export Package
• Trademark: SEACO
• Origin: Shangdon China
• HS Code: 84314310
• Production Capacity: 100
• Package Size: 50.00cm * 60.00cm * 70.00cm
• Package Gross Weight: 30.000kg

Product Description

API 7-1 Kelly Cock Valve/Operated upper and lower Kelly Cock Valve 
 

Product Description

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:

Upper or Lower type;

Tool OD;

Working Pressure: 5,000 / 10,000 / 15,000 PSI;

Tool connection.

Specifications - Upper Kelly Valve

Model	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

Products Show

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	68.6