Product features:
1. The upper part of the single flow valve is equipped with an anti rotating disc and a rubber plug, all of which are drillable materials. The body is made of phenolic resin, and the spring is made of tin bronze. The overall performance meets the requirements of APIRP10FIIC.
2. Internal cement filling, using high sulfur resistant oil well cement, with good drillability and erosion resistance.
3. The machining inspection of threads shall be carried out in accordance with API5B standards.
4. Floating shoes and floating hoops are available in two forms: single valve and double valve. The anti rotation floating hoop floating shoe can fix the upper and lower rubber plugs, saving drilling time.
| Specification (mm)/(in) | Outer diameter (mm) | Inner diameter (mm) | Height (mm) | Water eye diameter (mm) | Applicable thread types | Pressure bearing capacity (MPa) | Single weight (KG) | Drawing No | |
| 140 | 2005/1/2 | 160 | 127.3-118.6 | 500 | 45 | API thread/special thread | 35 | 36 | FCBCCTNR140 |
| 168 | 2006/5/8 | 187.8 | 153.6-144.1 | 550 | 45 | API thread/special thread | 35 | 40 | FCBCCTNR168 |
| 178 | 7 | 200 | 166-150.4 | 550 | 45 | API thread/special thread | 35 | 54 | FCBCCTNR178 |
| 194 | 2007/5/8 | 219.1 | 178.4-162 | 550 | 45 | API thread/special thread | 35 | 62 | FCBCCTNR194 |
| 219 | 2008/5/8 | 244.5 | 205.6-190.8 | 550 | 45 | API thread/special thread | 35 | 70 | FCBCCTNR219 |
| 244 | 2009/5/8 | 269.7 | 226.6-214.3 | 550 | 70 | API thread/special thread | 35 | 76 | FCBCCTNR244 |
| 273 | 2010/3/4 | 298 | 258.9-242.8 | 550 | 70 | API thread/special thread | 35 | 96 | FCBCCTNR273 |
| 298 | 2011/3/4 | 323.9 | 281.5-273.6 | 600 | 70 | API thread/special thread | 35 | 118 | FCBCCTNR298 |
| 340 | 2013/3/8 | 365 | 320.4-313.6 | 600 | 70 | API thread/special thread | 35 | 146 | FCBCCTNR340 |
| 406 | 16 | 431.8 | 384.1-381.3 | 650 | 70 | API thread/special thread | 21 | 180 | FCBCCTNR406 |
| 473 | 2018/5/8 | 508 | 450.9 | 650 | 70 | API thread/special thread | 21 | 228 | FCBCCTNR473 |
| 508 | 20 | 531.2 | 485.7-475.7 | 650 | 70 | API thread/special thread | 21 | 310 | FCBCCTNR508 |
| Note: Special specifications and models of products can be customized for design. | |||||||||