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btjmtorres1
Radiator Valve Removal
btjmtorres1

Need help replacing a 1 1/4" radiator valve. I first tried to loosen the valve with two wrenches, one to back up and the other on the valve turning counter clockwise. No luck. Then a plumbing supply store told to use a cheat on the wrenches or try heating the connection. No luck. Its a old house and im thinking its maybe rusted and afraid it might just break. Ive included a picture and maybe get some help. Thanks.

Sombreuil_mongrel
Re: Radiator Valve Removal
Sombreuil_mongrel

heat it with a MAPP gas torch and it will likely break free easily.
S_M

Re: Radiator Valve Removal
btjmtorres1 wrote:

Need help replacing a 1 1/4" radiator valve. I first tried to loosen the valve with two wrenches, one to back up and the other on the valve turning counter clockwise. No luck. Then a plumbing supply store told to use a cheat on the wrenches or try heating the connection. No luck. Its a old house and im thinking its maybe rusted and afraid it might just break. Ive included a picture and maybe get some help. Thanks.

Hello, Yup, most likely it is siezed together. by the looks of it I'm guessing it has been together for a very long time. I have remove hundred of these in my past 30 yrs. as a plumber. First try the two pipe wrench method. Using your backup wrench tight against the bottom of the radiator. that will give you best leverage once you place a 18"-24" wrench on the valve itself. Use 2-18"-24" wrenches if you can. Once the backup wrench is tight on the pipe going through the floor, then losen the valve. It will definitly take some effort. you can try soaking the threads on the valve and pipe with some kind of rust breaking spray(wd40 etc) When you do start turning the valve counter clockwise do it in a continuous motion, try not to jerk on it. Worst case, the threads on the pipe are corroded to the valve and you will have to replace the pipe as well. Steel pipe after a long period of time seize together and become one piece. Yes, this is no fun but you will be able to do this. Hope this helps!;)GregC

Re: Radiator Valve Removal
GregC wrote:

Hello, Yup, most likely it is siezed together. by the looks of it I'm guessing it has been together for a very long time. I have remove hundred of these in my past 30 yrs. as a plumber. First try the two pipe wrench method. Using your backup wrench tight against the bottom of the radiator. that will give you best leverage once you place a 18"-24" wrench on the valve itself. Use 2-18"-24" wrenches if you can. Once the backup wrench is tight on the pipe going through the floor, then losen the valve. It will definitly take some effort. you can try soaking the threads on the valve and pipe with some kind of rust breaking spray(wd40 etc) When you do start turning the valve counter clockwise do it in a continuous motion, try not to jerk on it. Worst case, the threads on the pipe are corroded to the valve and you will have to replace the pipe as well. Steel pipe after a long period of time seize together and become one piece. Yes, this is no fun but you will be able to do this. Hope this helps!;)GregC

Sorry, I see you already have the radiator removed, my bad. Place your back up wrench on the pipe and wedge it against the baseboard wall. Place something behind it so you don't dent your baseboard. Then place your other wrench on the valve and turn counter clockwise. Trying to use both hands on both wrenches takes more effert then if you would to wedge one wrench against the baseboard. This will allow you to use two hands on your valve removing wrench and or a cheater on the handle of the wrench. Sit on the floor with your feet facing the wall, both hands on the wrench and gradually pull the wrench on the valve slowly to you. LEVERAGE is the key to breaking this joint free. Don't worry, if it is seized and breaks you can replace the pipe nipple going down into the floor. I know its a bummer but it has happened to me several times and its just another fun thing we deal with while being a homeowner. Hope it helps.;)GregC

Jack
Re: Radiator Valve Removal
Jack

You might try getting some PB Blaster from an auto parts store. I believe it works a little better than WD40 on rusted pipes. Spray some on let it soak and spray again.
Jack

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