How to remove the corroded valve seat housing in my tub faucet
Grrr.plumbing ... I am the by default female ''fixit'' around here and this is my plumbing stumbling block .I have 30 year old American Standard (not!) 3 handle tub faucets (shower diverter handle in the middle )I am adept at replacing valve seats and stem/washers assemblies, but my cold water valve seat housing itself has corroded through, so the faucet continues to drip around the valve seat.How do I get that piece out ? It is threaded, as is the stem housing (with a hex lock lug to hold the valve stem in place) Is there a specific tool to remove that?
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Re: How to remove the corroded valve seat housing in my...
Some seats ae rremovable and some or not Some take a hex(allen) wrench and some take a square (seat removal tool) Most of us use a seat grinder. (another tool to dress up the seat (Remove material) past the seat damage. You will find any of these tools at any hardware store that sells plumbing parts. If the seats have a square or hex hole remove and replace rather that grind(dress)the seat. All right hand threads meaning turn counter clock wise to remove. Take old seat to the American Standard plmbing supply outlet and then will match it up. Good fix-in to ya.
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Turn off the shut-offs unscrew the handles and remove. Remove the valve stems (sometimes there is an escutcheon or collar to remove first). Using the handle to hold the valve stem use a screwdriver to undo the screw holding the rubber seal. Replace the seal. Verify with the screwdriver that the valve seat has no channels worn into it. If it does either remove it with a seat wrench and sand it by rubbing it back and forth on a piece of sandpaper, or by replacing it. Reassemble. Turn on your shut-offs and test the faucet. Remove and clean the aerator (this is done every time you do plumbing work)
Remove the handles. See if the chrome slip nuts holding the stems in are corroded. If they are, the cartridges may not be fully seated or the o -rings that seal around the cartridges may need to be replaced. If either of these is the case you can tell for sure by turning the stems to the on position with the handles removed and looking for water seeping around the cartridge. If none of the above is the cause then check to see if the aerator (screen on the spout) is loose or corroded sending a light spray back towards the faucet body that looks like a leak. If this is the case remove and clean the aerator, then reinstall it making sure not to cross thread it. If none of the above, replace the faucet. Be sure to call Delta first before replacing because they have a lifetime warranty and you just might get your faucet for free!
When you turned off the water to remove the old faucet did you have to turn off the water to the whole house or was there cut off valves going to the tub. Did you install cut off valves for the tub and forgot to turn them back on before trying the new faucet. What type of faucet did you install? Whats the make and model. Its possible something got caught/dropped in the pipe when you were installing the new faucet and is now blocking the flow of water.
Check outside water pressure to house. Should be 65 - 75 PSI. If good most likely the cartridge. Older faucet, do both sides to prevent future problems. Blade handles? Make sure you get Hot & Cold stems, they turn the opposite way with blade handles. Some cartridges are universal and can be adjusted to work either way. After removing the stem, check with a flashlight in the valve, delta has rubber seats and springs on many of their models. If so, replacement of the rubber seats may do the trick.
Many of these problems develop from poor maintenance on water heaters and high pressure. Water heaters, regulators, safety valves, supply lines, and emergency shut off valves at fixtures should be checked, cleaned and adjusted on an annual basis. Your local expert plumbing contractor should be able to assist you on that.
If you don't really want to tear into the finished tile, you could repair this units most likely. You will have to shut off the water in the house. Remove all handles. Loosen large nut assembly and unscrew the valve stem. If you remove the valve stems you can purchase the complete assembly at a full service plumbing supply co. If the seats are not removeable, a reseating tool is inexpensive. Replacement knobs are available if they are unsightly. The replacement will require removing tile, drywall, cutting or de-soldering piping. Purchase a new valve and follow directions to install. Home depot sell Price Pfister faucets.
Remove it and make sure that the cup washer and spring are seated propoperly. The large end of the cone shaped spring sits on the bottom of the housing seat and cone washer slips over the small end of the spring. Use the shank of small screwdriver to guide the washer and spring by placing them on the shake in the proper order and then putting the shank into the housaing and sliding the washer and spring.
You may also have to disconnect the supply tube that connects to the faucet under your sink. This is to relieve the pressure within the valve housing which can cause the washer to become mis-aligned when installing the cartridge
. Also check cartridge for defects and make sure you have it install in the correct position i.e you may have to remove it rotate it 180 degrees re-install it and move the limit stop (if it has one, depends on year) inserted in the top to the correct side for propoer operation direction of the handle after you reverse it.
Hope this helps, sincerly T. Wood, C&F Enterprises, A Plumbing Contractor
Using a parts breakdown picture, disassembe of the valve carefully @ the stem by removing the handle then the bonnet with the seals. Check, with a magnifying lens, the condition of the valve seats. There could be some particles or some damage to the surfaces that touch each other. Sometimes a 300 grit sandpaper rotated around those parts remove slight problems. Usually changing the stem (part that turns) or the seat (part that it tightens against) is the cost effective approach. Put it back together cleaned and carefully. Plumbing stores and most large hardware stores have this. Bring the parts with you for a pewrfect match.
take the valves out and check the valve seats use flashlight if they look good then very carefully put your finger in and feel for any burrs when in doubt just replace the seats this is always a good practice when replacing valves