Float Valve (Flapper Type Check Valve)
Product Description
This Float Valve is normally installed in a standard bore-back of bit sub, to provide fluid flow control at the bottom of the drill stem. It also prevents backflow of cuttings from pl ing the drill bit jets while making connections.
| Type |
Dia. of Valve Assembly |
Length Of Valve Assembly |
Dia. Of Float Recess |
Sub Box |
Other Popular Connections |
| mm(inch) |
mm(inch) |
mm(inch) |
Connection |
Depth Of Recess |
Connection |
Depth Of Recess |
| |
|
|
API |
mm(inch) |
API |
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) |
| When ordering or requesting quotation, if size out of above specification, pls. specify clearly. |
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