you got to use this head...

 

the spring head 

should work but may take a couple of good runs.

 

Otherwise you have the same problem as my house, that is the horizontal drain pipe has too little slope.

 

 

 

 

所有跟帖： 

• Thanks for the information, the spring head is what I used and i -kungfutea- ♂ (0 bytes) () 03/16/2021 postreply 12:49:10

• it didn't help much. I have the same situation with very little -kungfutea- ♂ (0 bytes) () 03/16/2021 postreply 12:50:15