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>> products >> Drilling Tools >> Valve
 
product name: Kelly valve
Description:  Kelly cock valve is manually operated ball valve in drill stem circulatory system.
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 saving 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 shalled connected at upper end and lower end of Kelly.
   Specification
Specifications--- upper Kelly valve
 
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
 
Specifications--- lower Kelly 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
 
 
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