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Question DetailsAsked on 1/29/2017

knob on tub faucet cracked into pieces

plastic knob on mobile home tub faucet cracked in three pieces

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Common thing with plastic handles, especially on single-handle faucets which come loose and wiggle around, which cracks them.

Probably best to contact manufacturer first - some will send a replacement free, some will sell replacements, or at worst you hopefully can find a local distributor of parts for their brand to get a matching one.

Normally (sometimes after popping out a pressed-in center decorative cover plug using a knife edge or small flat-tip screwdriver) you can remove a center retaining screw, or sometimes you remove a setscrew in the side, then lift or rotate the knob off, take to home improvement box store, box store like WalMart, or plumbing supply store and get a replacement. Some are commonly available, many not so much or only at plumbing wholesalers who may or may not sell to the public. Since in a mobile home, there is also a possibility that a mobile home/RV repair/parts place can match it - or remotely possibly (especially if not real old mobile home) the mobile home manufacturer, though that is a real long shot.

Commonly, if separate faucets for hot and cold, best to take both in because you need the good one to match to - and you may end up having to get two new handles which do not match, especially if an older faucet and not a brand (like Delta/Peerless) which has kept pretty much the same knob (at least the part that goes on the stem) design for decades. If single knob, take in parts to match stem size and fastening method at least.

While getting/waiting for part - commonly you can use a washcloth over the broken handle to turn it, if the mounting part is still there. If it broke off completely, you might be able to use a pair of vice-grips clamped on the stem (usually has a mounting flat side on it) - just be careful about marring it, especially any threads, so you can get the new one on when needed. Commonlhy, if you use vice grips as a temporary handle, you will need to use an emory board or fine file to trim off any ridges raised in the metal by the vice grips. That can be reduced by putting a couple wraps of electrical or medical white or duct tape around the stem before using pliers on it. Regular pliers generally NOT a good idea because repeated use mars it more - though taping first can reduce that, if the faucet stem turns easily.

Getting this done professionally - probably $200-350 range, because plumber would have to come, almost certainly will not have the part on the truck unless Delta/Peerless single-handle ball type or similar, so will then have to go run around looking for a matching part, then come back - a LOT of labor time. Sometimes it is cheaper just to swap the entire faucet out for new faucets if it does not take digging into the surround, though you normally don't know that up front. If you are lucky, he will have a replacement handle (or matched pair) which will work either in the truck or at the shop - but don't count on it, and almost certainly not if you are picky about the specific or finish.

Knob itself typically about $5-10 - to around $30 if brass or stainless or brushed bronze or such.

Answered 3 years ago by LCD

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