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PURPOSE
The FB2 Standing Valves are complete units that are used to land on a top no-go shoulder of F Nipple. This no-go shoulder restricts the downward movement, but these valves are not locked into F Nipple in order to restrict the upward movement. They are used to hold a column of fluid in the tubing if the well stops producing, making swabbing operations easier.
APPLICATIONS
The FB2 is generally placed in the tubing string when there is a need to retain fluid from being reabsorbed back into the wellbore formation.
A good example of this would be placing a standing valve above a submersible pump.
![](https://cdn.prod.website-files.com/65144f2ab86f0c7800beb8f9/652467cf8439afbd9daa10f7_Screenshot%202023-10-09%20at%201.50.38%20PM-min.jpg)
![](https://cdn.prod.website-files.com/65144f2ab86f0c7800beb8f9/652467c76ea970787acc6e98_Screenshot%202023-10-09%20at%201.50.44%20PM-min.jpg)
![](https://cdn.prod.website-files.com/65144f2ab86f0c7800beb8f9/652467d80bc6ca7db5b6ed5d_FB2%20Standing%20Valve.jpg)