API Drill Pipe 6-5/8" Reg Type 6R 3R Bit Sub Plunger Float Valve Flapper
API Drill Pipe 6-5/8" Reg Type 6R 3R Bit Sub Plunger Float Valve Flapper
This Drill Pipe Float Valve is normally installed in a standard bore-back of the bit sub, to provide fluid flow control at the bottom of the drill stem.
It also prevents backflow of cuttings from plugging the drill bit jets while making connections.
|
Type |
Dia. of Valve Assembly mm(inch) |
Length Of Valve Assembly mm(inch) |
Dia. Of Float Recess mm(inch) |
Sub Box |
Other Popular Connections |
||
|
Connection API |
Depth Of Recess mm(inch) |
Connection API |
Depth Of Recess mm(inch) |
||||
|
1R |
42.1(1-21/32) |
149.2(5-7/8) |
42.9(1-11/16) |
2-3/8Reg. |
231.8(9-1/8) |
NC23 |
231.8(9-1/8) |
|
2F-3R |
61.1(2-13/32) |
165.1(6-1/2) |
61.9(2-7/16) |
3-1/2Reg. |
266.7(10-1/2) |
NC31 |
260.35(10-1/4) |
|
3-1/2 F |
79.4(3-1/8) |
254(10) |
80.2(3-5/32) |
NC38 |
362.0(14-1/4) |
||
|
4R |
88.1(3-15/32) |
211.1(8-5/16) |
88.9(3-1/2) |
4-1/2Reg. |
325.4(12-13/16) |
NC44 |
331.8(13-1/16) |
|
5R |
98.4(3-7/8) |
247..7(9-3/4) |
99.2(3-29/32) |
5-1/2Reg. |
374.7(14-3/4) |
NC50 |
368.3(14-1/2) |
|
5F-6R |
121.4(4-25/32) |
298.5(11-3/4) |
122.2(4-13/16) |
6-5/8Reg.. |
431(17) |
5-1/2IF |
431.8(17) |
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Product Description
Type ZFF float valve is a kind of unidirectional check valve which can be used in preventing from blowout and well kick to reduce loss of drilling fluid and keep the rig floor clear.
Specification
|
Type |
O.D.(mm) |
Bearing Back Pressure |
Connection |
Drill collar (in) |
|
ZFF127 |
φ127 |
35MPa 70MPa |
NC38×NC38 |
5″ |
|
ZFF159 |
φ159 |
35MPa 70MPa |
NC46×NC46 |
6 1/4″ |
|
ZFF165 |
φ165 |
35MPa 70MPa |
NC50×NC50 |
6 1/2″ |
|
ZFF178 |
φ178 |
35MPa 70MPa |
NC50×NC50 |
7″ |
|
ZFF203 |
φ203 |
35MPa 70MPa |
6 5/8REG×6 5/8REG |
7″ |
|
ZFF228.6 |
φ228.6 |
35MPa 70MPa |
7 5/8REG×7 5/8REG |
9″ |
|
ZFF241 |
φ241 |
35MPa 70MPa |
7 5/8REG×7 5/8REG |
9 1/2″ |
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