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Kelly Valve/Cock


  • প্রযুক্তিগত বৈশিষ্ট্য
  • কারিগরী পরামিতি

প্রধান প্রযুক্তিগত বৈশিষ্ট্য
● Kelly valve also named Kelly cock or drill pipe safety valve. It is a hand control valve in drill

string circulating system and it is one of the effective tools to prevent blowout.

● Kelly valve is divided into Upper Kelly Valve and Lower Kelly Valve. Upper Kelly Valve is

connected between swivel sub and Kelly. Lower Kelly valve is connected between lower end of

Kelly and top of drill pipe or lower end of Kelly save sub. Rotating the wrench of full opening

safety valve 90° to realize on and off. In the drilling operation, in order to avoid malignant

accidents, Kelly valves should be connected to both end of Kelly to prevent loss of drilling fluid

and blowout.

● H2S Resistance Kelly valves is also available upon request

আদর্শ বাইরের ব্যাস
Mm(inch)
Connecting thread API ভেতরের ব্যাস
Mm(inch)
Working Pressure MPa
XS86
86(3-3/8) NC26 30(1-3/16) 35-70
XS105 105(4-1/8) NC31 40(1-37/64) 35-70
XS111 111(4-3/8) NC31 40(1-37/64) 35-70
XS121 121(4-3/4) NC38 44.5(1 3/4) 35-70
XS127 127 (5)    
NC38 44.5(1 3/4) 35-70
XS146 146(5-3/4) 4-1/2REG LH
44.5(1 3/4) 35-70
XS159 159(6-1/4) NC46 57.2(2 1/4 35-70
XS168 168(6-5/8) NC50 71.4(2-13/16) 35-70 
XS178 178 (7) 5-1/2FH 71.4(2-13/16) 35-70
XS197 197(7-3/4) 6-5/8REG LH 76.2 (3) 35-70
XS203 203 (8) 6-5/8REG LH 76.2 (3)  
35-70 


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