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Drill is a drill string bypass valve in the back-circulation valve. Overflow occurs when the drilling,
and drill boreholes were plugged when not killing, to open the valve resume normal drilling fluid
circulation to prevent blowouts or limp pump
drill bypass valve specifications and main dimensions
|
Type
|
ODmm
|
Pathmm
|
Lengthmm
|
Connecting thread
|
Ball diameter
|
Scope
|
|
PTF-4 3/4″
|
121
|
45
|
500
|
Nc38
|
2″
|
与3 1/2″Supporting the use of drill pipe
|
|
PTF-6 1/4″
|
159
|
50
|
580
|
Nc46
|
2 1/4″
|
与5″Supporting the use of drill pipe
|
|
PTF-6 1/2″
|
165
|
50
|
580
|
Nc50
|
2 1/4″
|
与5″Supporting the use of drill pipe
|
|
PTF-7″
|
178
|
50
|
550
|
Nc50
|
2 1/4″
|
与5″Supporting the use of drill pipe
|
|
PTF-8″
|
203
|
50
|
600
|
6 5/8REG
|
2 1/4″
|
与8″Supporting the use of drill pipe
|
|
PTF-9″
|
229
|
58
|
650
|
7 5/8REG
|
2 3/4″
|
与9″Supporting the use of drill pipe
|
|
PTF-11″
|
280
|
58
|
650
|
7 5/8REG
|
2 3/4″
|
与11″Supporting the use of drill pipe
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According to customer requirements ,We can design and manufacture other serial specification products
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