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Oil Drilling Tools Upper / Lower Kelly Valve 5000psi Work Pressure Forging Processing Type

Categories PDC Drill Bit
Brand Name: MIROC
Certification: API
Place of Origin: China
MOQ: 1 Pieces
Price: 1000
Payment Terms: L/C, T/T, Western Union
Supply Ability: 10000 units per months
Delivery Time: 10-20 days
Packaging Details: Carton Box or Wooden Box
Length: 31.5''
Work pressure: 5000psi
Use: Well Drilling
Processing Type: Forging
Thread: NC IF REG
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Oil Drilling Tools Upper / Lower Kelly Valve 5000psi Work Pressure Forging Processing Type

High quality API kelly valve for oil drilling tools/Api manually operated upper and lower Kelly Cock Valve

Product Application

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

O.D. (mm)
Thread connection (LH)
I.D. (mm)
Max.sealing pressure(Mpa)
146
4 1/2 REG
50
68.6
200
6 5/8 REG
76.2
68.6

Specifications - Lower Kelly Valve

Model
O.D. (mm)
Thread connection
I.D. (mm)
Max.sealing pressure(Mpa)
105
NC31
41.3
68.6

121
NC38
50
68.6
127
NC38
50
68.6
165
NC46
61
68.6
178
NC50 , 5 1/2FH
71.4
68.6

Quality Oil Drilling Tools Upper / Lower Kelly Valve 5000psi Work Pressure Forging Processing Type for sale
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