Delta Faucet RP77739 Repair Kit

I bought this because the twenty-year-old bathroom faucet's seals had given out, so it was either try to fix it or replace the whole faucet with a new one. I had already disassembled the faucet, so I felt alright in trying a repair. The faucet kit arrived promptly, and the same evening I set about applying it. I thought perhaps I would need to look online for instructions, but I found an instruction guide was printed with the package label. I looked over the parts, and was momentarily wondering whether I had ordered the right kit, but the instructions mentioned that the part design had changed. They also specified removing the adjustment ring that had the job of keeping enough pressure on gaskets so that they did not leak. I replaced the two small rubber sleeved seals for the supplies and their springs, after doing the recommended cleaning of the ports with a soft cloth. The new ball's post went through the gasket assembly, and all that went into the faucet barrel. I removed the no-longer-needed adjustment ring from the barrel cover, then tightened down the barrel cover. I positioned the handle to midway and slowly turned on the supply lines in turn, verifying no leakage was happening where it shouldn't, then bringing the handle to the closed position and seeing that there was no flow there. That all took me about thirty minutes, and I was being slow and making sure I read the directions because of the parts change. Next time, I think a changeover would take me maybe twenty minutes from starting disassembly to putting the decorative handle cover back on. The newly repaired faucet handle moves more freely, yet does not have any leakage. This is one time where the newly re-engineered solution succeeds brilliantly. It is easier to put together, has fewer adjustments that have to happen, and works better than the original ever did. Congratulations to the product designers.

Ordered this kit to rebuild a single knob bathroom faucet in our home that was built in 1976 with original plumbing hardware. Installation was easy as can be and I also used some waterproof plumber's grease when I reassembled. The faucet works wonderfully-- so silky and smooth now. I loved it so much I decided to rebuild our shower faucet as well but got impatient and ran to Lowes to see if they had this kit. They did not have the OEM Delta kit and I bought the aftermarket brand kit they carried that was similar with the same replacement ball and o-rings. It is NOT the same. I rebuilt our shower with the aftermarket kit and it leaks unless you cinch the top ring on very tightly, which doesn't allow free and easy movement of the knob. Ended up ordering another one of these kits to rebuild that shower valve with. The aftermarket kit was about half the price of this one, but it's about 1/4 of the quality. Highly recommend this Delta kit!

Perfect fit for a pretty old Delta shower faucet. No more leaks! Very easy installation!

Update: kit basically works with one quirk. When the water is off and I turn the knob all the way to the cold side, it will start dripping. Turn it CCW slightly and it stops. Seems I have a 53 year old valve and the specs on replacement parts are slightly different. The wrench for the adjusting ring was too big for the adjusting ring on the original bonnet. I do plan to buy a new valve eventually but this works good enough for now. It does work smoothly and the handle doesn't leak at all. I still give it a 4 star rating. -------- I bought a home 5 years ago with a Delta 600 shower valve in the master bath. I think quite possibly it was original when the house was built. As most others have had the bonnet nut stuck, my valve was no exception. I tried soaking it with vinegar and water on a rag for 20 minutes as Delta has suggested on their site. Don't waste your time, it won't work. I used a dremel to cut mine in 2 places to break a piece of it out. Yes, I did nick the treads on the shower valve itself towards the outer edge but it's not leaking as the spot is past the rubber seal. I had a surprise when I took the old washers out and found that longer springs had been used than were provided with the kit. Fortunately, I had ordered another after market repair kit that had the longer springs that I found in my valve. The seepage that was dripping seems to have stopped now. I used plumber's grease on the washers, ball, and treads. It operates very smoothly now. I have no idea if someone repaired the valve with the longer springs or if it came that way. This was worth the money. With all plumbing projects, I always buy multiples since you never know what you're going to encounter.

I could probably have gotten away with just replacing the washers and springs, but once you have the whole thing torn apart, you might as well replace everything, right? There are some really good videos on YouTube about how to do this. We did have some trouble getting the dome nut off. At first, we used a pipe wrench as recommended in the comments section of the video we watched. Clearly the nut was not coming lose and the entire valve was beginning to twist in the wall. This can lead to catastrophic porblems. We switched to a chanel lock and were able to get it lose and proceed with the repair. My suggestion, soak the entire nut area of your old valve repeatedly for days in advance with some sort of "Bolt Off" lubricant. Before you try to unscrew it, rap on the dome nut all the way around. I don't mean tap lightly nor do I mean for you to beat on it. But you need to knock it pretty good to loosen those threads. Also, get some silicone paste and slather all the new parts up good before you put it back together. Doing this yourself will save you hundreds over what a plumber would charge. Good luck!

I think this kit is great but I had to return it. When I received it I noticed that one piece was different, a round plastic piece with a rectangular slot opening where my original had a triangle opening. I ended up with the RP77738 kit for my kitchen faucet. I was able to return the incorrect kit because I did not even have to open the package to see the discrepancy so everything worked out good in the end.

Did just what I needed. Stopped an old leaky Delta faucet from dripping without needing to do any major work or replace the whole thing. Used on a single knob bath/shower diverter faucet and the job was done in 10m.

It works.

Everything you need is in the package, save for the silicon grease (to be applied onto springs, gaskets and ball bearing).

fits well, and works, no more leaking