How to replace a shut off valve

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  #1  
Old 05-17-19, 08:09 AM
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How to replace a shut off valve

Hello people,

In my basement there is a water line that goes to the outside of the house for the outside hose spigot. For some reason there are two shutoff valves on that line, and neither one works well...so Iíd like to replace them. Please see the attached two photos, Is it just as simple as unscrewing the old one and replacing it, or do I have to cut pipes, etc? The blue shutoff valve looks like it really only unscrews from one spot (the red arrow in that picture). The black shutoff valve I canít quite tell which spot it would unscrew from, marked by the three different arrows in the picture.

Plus, arenít new shut off valves the lever type instead of the twist knob type?

Any help would be great!

Thanks.
 
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Old 05-17-19, 11:31 AM
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Excellent pictures.
The reason that parts of the valve come out/apart is to rebuild the valve.
The outer nut tightens the packing around the shaft.
The big nut close to the valve allows the guts to be removed for washer replacement.

Unfortunately.... if you want to replace the valve it needs to be cut out.
Replacing those older valves with a ball valve is a great idea.

Not sure why two valves control the same location. The left hand valve has a water drain port.
 
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Old 05-17-19, 02:42 PM
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Thanks for the reply. Well that stinks. I thought it was as simple as unscrewing the old one and screwing in the new one. I saw this at Home Depot, and thought I could just unscrew the new piece and screw it into my existing one. See pic below:
 
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Old 05-17-19, 03:46 PM
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You may get lucky. It may fit but every company uses different sized threads and the valve guts are rarely interchangeable. Even those little drain caps come in several thread sizes.
 
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Old 05-17-19, 03:49 PM
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Thanks, I guess itís time to learn to solder lol.
 
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Old 05-17-19, 03:53 PM
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There is a line of products called Shark Bites. They are no solder push-on installation devices. The make shark bite ball valves. You'll pay a little more but there won't be any soldering. In your case you''d probably need one valve, one coupler and a short piece of pipe. You'd have to cut the valve out and you may have to make up a short piece.

The home improvement stores carry the products.
 
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Old 05-17-19, 06:30 PM
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Rebuild the red valve. It will save time and money (it will cost about $2.50 for washer and packing) and less work. The red valve was put in because the previous owner did not know how or did not want to fix the black one. I've seen this several times.
 
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Old 05-17-19, 07:46 PM
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Got my colors mixed. I saw the red arrows and that's what stuck in my mind. Black handle valve should be re-built.
 
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