Dripping Delta Shower head, cartridge (RP46074) for 13/14 series replaced and still drips

[Endless Motion]

Our Delta shower head started dripping after being shut off and would not stop. Its a 13/14 series and takes the RP46074 cartridge which is just coming up on five years since the home was built. I purchased another Delta RP46074 cartridge and replaced the old one. After turning off the valve, the drip continues without stopping, though not as much as before. I noticed if I add 2 lbs pressure on the valve handle, the dripping stops. I currently have a 2 lb weight suspended on the handle to prevent wasting water. Any ideas what I may have done wrong or suggestions what I might do next? The installation seemed pretty straight forward and all clicked into place like the Delta instruction video showed. I also lubed up the three O rings on the replacement valve before installing with the recommended O ring lubricant.

 

[John Gayewski]

Where did you get the cartridge?

 

[Sponsor]

 

[Bannerman]

Suggest contacting Delta as I understand there is a lifetime warranty for the original owner.

 

[Endless Motion]

Where did you get the cartridge?

I bought it at Home Depot. They sell the original DELTA cartridges. I also bought a DANCO aftermarket cartridge that I left as a back-up just to try a different manufacturer in case I still have a problem with the DELTA cartridge. I'm about to pull it out and re-install the DELTA again. The drip has reduced significantly, but still drips... :-(

 

[Endless Motion]

Suggest contacting Delta as I understand there is a lifetime warranty for the original owner.

Thanks. I did. They sent me some suggestions, which I have tried. I'm going through the suggested route a third time too see if it finally cures the problem...

 

[John Gayewski]

Thanks. I did. They sent me some suggestions, which I have tried. I'm going through the suggested route a third time too see if it finally cures the problem...

I think you should try a thorough Flushing. Sounds to me like gunk in the line.

 

[Bricbasher]

Thanks. I did. They sent me some suggestions, which I have tried. I'm going through the suggested route a third time too see if it finally cures the problem...

Were you able to resolve this? I have the exact same issue occurring. Same cartridge and all. I haven't hung a weight from the handle but if I hold pressure on it the dripping stops.

Edit: I've been looking around on the interweb and I have seen where people have been checking the valve (I hope that's the right term) itself to make sure there isn't any calcium or mineral buildup. I am going to make sure and clean the valve with some baking soda to remove any buildup. I know I have hard water and although we have a water softener I will check and see if this is my problem and report back.

 

[Stmboyd]

Our Delta shower head started dripping after being shut off and would not stop. Its a 13/14 series and takes the RP46074 cartridge which is just coming up on five years since the home was built. I purchased another Delta RP46074 cartridge and replaced the old one. After turning off the valve, the drip continues without stopping, though not as much as before. I noticed if I add 2 lbs pressure on the valve handle, the dripping stops. I currently have a 2 lb weight suspended on the handle to prevent wasting water. Any ideas what I may have done wrong or suggestions what I might do next? The installation seemed pretty straight forward and all clicked into place like the Delta instruction video showed. I also lubed up the three O rings on the replacement valve before installing with the recommended O ring lubricant.

Exact same problem. I've traced the problem back to the bonnet nut not being tight enough.
Clean it, silicone lube. Tighten firmly with a strap wrench (about $20 on Amazon).