There are 2 ways to do this.
Option 1
- New bulkhead with thread inside/outside or thread inside and slip outside.
Option 2
- Use a slip/ threaded insert glued in on the inside (if needed). Link below for a threaded insert. I take a short piece of pvc, glue it it, then glue the female slip to threaded couper onto the short piece of PVC when I use slip/slip bulkheads. Although I prefer threaded in tank and slip on outside. Link to female slip to 1" thread below for reference.
- Use a "street elbow". I have a link below as an example. When this is glued in, the bulkhead will still be able to come out, due to the way the 90 is. Link is for a 1"
Female Adapter for Schedule 40 PVC Pipe (Slip x FIPT). Female adapters are used to connect two parts with two different end types; a female adapter has a female (FIPT) socket on side and a slip socket
www.homedepot.com
PVC schedule 40 pipe and pressure fittings are used in irrigation, underground sprinkler systems, swimming pools, outdoor applications and cold water supply lines. These fittings are highly resilient,
www.homedepot.com