laundry cold water valve cannot turn off

The cold water laundry valve cannot be turned off. I tried to turn it off but it appears stuck. Any tips on how to close it? The hot water valve can be fully turned on and off.
Here are 3 pictures of the valves: http://www.flickr.com/photos/54230006@N07/sets/72157630348572550 /
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Looks like calcium build up, more so on the cold water. Soak both valves, as best you can, with vinegar for an extended period, to get the calcium off all parts. When all the calcium is off, just "play" with the valve, gently to moderate force, until it loosens. If you suspect further trouble, have a replacement valve on standby, just in case.
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On Friday, June 29, 2012 4:58:56 PM UTC-7, snipped-for-privacy@hotmail.com wrote:

Are you able to unscrew the bonnet (collar)? The bonnet is usually the six sided nut that is just under the handle. Turn-off the water to the house first and then unscrew the bonnet and then the stem. The stem is the part that is holding the handle. Everything unscrews counterclockwise. Preferably turn-off the water to the house during a time when the plumbing supply store is open and also when there isn’t an urgent need for water.
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On Fri, 29 Jun 2012 19:56:35 -0700 (PDT), snipped-for-privacy@gmail.com wrote:

sided nut that is just under the handle. Turn-off the water to the house first and then unscrew the bonnet and then the stem. The stem is the part that is holding the handle. Everything unscrews counterclockwise. Preferably turn-off the water to the house during a time when the plumbing supply store is open and also when there isn’t an urgent need for water. Look at the picture. It's a ball valve. No bonnet. No stem. But it LOOKS like a thread on valve, not a solder on- so it should be simple enough to replace it.
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On Jun 29, 10:23 pm, snipped-for-privacy@snyder.on.ca wrote:

It sure does look like a ball style valve, just replace the valve as trying to clean it will take more time than it is worth spending.
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On Fri, 29 Jun 2012 21:14:56 -0700 (PDT), "hr(bob) snipped-for-privacy@att.net"

I agree to replace it, but before doing that, shut off the water in the whole house. Lightly tap on the handle with a hammer. Then try to turn it with a wrench. If it breaks, it's junk anyhow. Just be sure the stores are open or you wont have water till you get a new one. Or buy one first, and return it if you do manage to open the old one.
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On Sat, 30 Jun 2012 00:04:19 -0500, snipped-for-privacy@thecave.com wrote:

Buy and return if not needed is the best strategy.
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At least he didn't suggest compressed air, and blow .....
Christopher A. Young Learn more about Jesus www.lds.org .

Failing balls...<sigh...>
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snipped-for-privacy@hotmail.com wrote:

You'll probably have to replace the valve.
Hint: After installing the new valve, or anytime for that matter, after opening the valve, close it 1/4 turn. Next time you have to fiddle with the valve, the valve will then be capable of turning in either direction, which might free the cause of the obstruction.
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On Sunday, July 1, 2012 11:45:07 AM UTC-4, HeyBub wrote:

Ah..............with a ball valve?????????????????
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wrote:

Surprising how many on usenet can't read.
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On Jul 2, 10:21 am, snipped-for-privacy@snyder.on.ca wrote:

I had a ball valve stick ONCE, spent over a hour messing with it. physically its in a terrible spot wit zero clearance on top of a steel beam:(.finally got it shut. using a piece of pipe over handle
the faucet discharged debris after washer replacement, and flow increased dramatically.
my theory..... debris got in the line and got trapped at the ball valve which wasnt fully open. the debris restricted flow. now i come along to replace faucet washers, actually a delta single handle cups and springs. ......... i find the supply valve refuses to shut... mess with it a long time and finnally get it closed..... replace the deltas parts, reopen supply valve....... see discharge of rocks, i always leave the aerator off till the repair is done......
i happily note the flow is now normal for the first time in years:)
As far as I can tell this is the ONLY possible cause of the symptoms
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1 - Buy a replacement valve 2 - Turn off water to house 3 - Open highest and lowest faucets to drain system 4 - Place pipe over handle of offending valve 5 - Attempt to close valve, support pipes if needed 6 - Decide whether valve needs to be replaced 7 - Do so or don't 8 - Turn water to house back on 9 - Close lowest faucet 10 - Close highest faucet 11 - Get startled the next time you open a faucet and it spurts momentarily as the air is cleared. 12 - If you didn't replace the valve, throw the new one in your plumbing supply drawer in case you need it in the future.
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