carlton1 Posted November 24, 2016 Report Share Posted November 24, 2016 A long shot i know....we have a valve which cannot be closed. Not sure if it is a gate or globe valve. Any help would be really appreciated as we need to operate it on a regular basis. The valve wheel turns but as it bites it slips and just spins...i'm guessing something has sheared on the stem or gear. As its burried it will be a huge job to dig out and replace so i'm hoping i can fix it in situ...all help is appreciated!! I have a couple of pics but too large a file to upload...cheers. Quote Link to comment Share on other sites More sharing options...
ditchman Posted November 24, 2016 Report Share Posted November 24, 2016 if it is a globe valve...(big ball with an ole thro'it)......you will have a lever ontop to operate it...90degs opens and closes it...........sounds like you have a stuffed stem on a gate valve...... get digging.............sorry Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 24, 2016 Author Report Share Posted November 24, 2016 Hi Ditchman...yes i better had by the sounds of it. Pretty sure its a gate valve then as it has a wheel rather than lever..thanks for the reply. Quote Link to comment Share on other sites More sharing options...
kyska Posted November 24, 2016 Report Share Posted November 24, 2016 I thought this might be a question for my Mrs.... Quote Link to comment Share on other sites More sharing options...
goober Posted November 24, 2016 Report Share Posted November 24, 2016 Usually either brass nut that is located in gate has stripped or threaded stem has corroded and lost thread. You may feel slight jump when turning. We use to use crane gate valves which were prone to this as gate would corrode and brass nut would break free of gate,we now use stainless ball valves. Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 24, 2016 Author Report Share Posted November 24, 2016 Thanks Goober...yes it jumps at the biting point when turning. Can this be repaired insitu do you think or is it a change out job..cheers. Quote Link to comment Share on other sites More sharing options...
goober Posted November 24, 2016 Report Share Posted November 24, 2016 Hi,I used to swap handle and stem off new valve as valve seat was brass. If you know valve make,type and size you may be able to swap stem and valve gate (presuming you can source spares)but obviously it would depend on if you can stop flow and whether valve body is is in good condition(my valves were 4" and had brass seat but not sure if this is usual set up). If the valve is important and you can't identify model I'd change whole valve. Hope this helps. Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 24, 2016 Author Report Share Posted November 24, 2016 Thanks goober...appreciate your help. I'm going tomorrow to have a better look and get a makers mark if possible, i can then research if parts are available...thanks again..cheers. Quote Link to comment Share on other sites More sharing options...
Winston72 Posted November 24, 2016 Report Share Posted November 24, 2016 what gauge pipe are we talking? Quote Link to comment Share on other sites More sharing options...
Winston72 Posted November 24, 2016 Report Share Posted November 24, 2016 potential option here for replacement http://www.corgi-direct.com/aladdin-easyfit-isolator-12-3420044 Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 24, 2016 Author Report Share Posted November 24, 2016 Looks like 6" at outlet Winston72...cheers. Quote Link to comment Share on other sites More sharing options...
Winston72 Posted November 24, 2016 Report Share Posted November 24, 2016 Looks like 6" at outlet Winston72...cheers. ah the 15/22mm probably a tad undersized then Quote Link to comment Share on other sites More sharing options...
figgy Posted November 25, 2016 Report Share Posted November 25, 2016 You best check you haven't just rounded of the hand wheel where it fits the valve stem. I think you will be digging it out and replacing it for a new one, you will get a 6" ball valve you can turn by hand easily but it will have a rather large lever on top. You can get the long extention for the shaft for any hard to reach areas, not going to be cheap though. Quote Link to comment Share on other sites More sharing options...
sle Posted November 25, 2016 Report Share Posted November 25, 2016 Defo replace it, no chance of repair. Don't use a crane or hattersley valve, they are all made in the same factory and are the most unreliable valves I have ever used and I fit a lot of big valves. They are an absolute rip of as well, a 6" will prob cost £600-£1000. Albion valves are the best value at the moment and good quality, al least half the price. Best thing to do is replace with a stainless butterfly valve especially if it's buried, most gate and globe valves tend to seize unless used fairly regularly. What's it used on is the other thing that determines the best valve type to use? Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 25, 2016 Author Report Share Posted November 25, 2016 Thanks figgy...i agree, i'm going to have a better look today in a bit more light..cheers for the help. Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 25, 2016 Author Report Share Posted November 25, 2016 Hi sle....cheers for your help. Its a water pipe,i'll have a dig out and measure up for a new one i guess...ill have a look at Albion. Thanks again. Quote Link to comment Share on other sites More sharing options...
philm Posted November 25, 2016 Report Share Posted November 25, 2016 No lever on these! and explanation of workings. http://www.industrialvalvestore.com/globe-valve Lever type valves are ball valves Quote Link to comment Share on other sites More sharing options...
Yellow Bear Posted November 25, 2016 Report Share Posted November 25, 2016 No lever on these! and explanation of workings. http://www.industrialvalvestore.com/globe-valve Lever type valves are ball valves or in larger sizes (>50mm) more likely Butterfly valves Quote Link to comment Share on other sites More sharing options...
goober Posted November 25, 2016 Report Share Posted November 25, 2016 Ball valve has less chance of leaking compared to a butterfly valve(ball is sealed to body with no shaft seals to leak). If it's in regular use I would go for a stainless ball valve with extended shaft(supported). I recently bought a flanged 4" stainless in new condition for £98 delivered off a well known auction site,though obviously if you buy new then price may be a factor in choice.. Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 25, 2016 Author Report Share Posted November 25, 2016 Cheers for the help guys....we have stemmed the flow today so bought some time. I'll be shopping for a good deal when i buy one...hope a secondhand one comes up...thanks again. Quote Link to comment Share on other sites More sharing options...
ditchman Posted November 25, 2016 Report Share Posted November 25, 2016 Cheers for the help guys....we have stemmed the flow today so bought some time. I'll be shopping for a good deal when i buy one...hope a secondhand one comes up...thanks again. make a phone call to an agricultural irrigation company................... Quote Link to comment Share on other sites More sharing options...
figgy Posted November 26, 2016 Report Share Posted November 26, 2016 (edited) Is the valve on water main? if its under mains pressure it will mean certain types of valve are better,age is another factor i dont think you will have a threaded pipe valve but a flanged one if old it will be to British table standards ie table D ring joint table E same bolts pcd but full face. Edited November 26, 2016 by figgy Quote Link to comment Share on other sites More sharing options...
carlton1 Posted November 26, 2016 Author Report Share Posted November 26, 2016 Hi figgy...it been in for over 30 years so like you say it will be probably flanged. Its not on a pressured system and works on header pressure...im going next week to dig out around it, hope to get a makers mark...cheers for help. Quote Link to comment Share on other sites More sharing options...
figgy Posted November 27, 2016 Report Share Posted November 27, 2016 (edited) Hi figgy...it been in for over 30 years so like you say it will be probably flanged. Its not on a pressured system and works on header pressure...im going next week to dig out around it, hope to get a makers mark...cheers for help. Depending on the head height it could be under a fair amount of pressure. Every 1 meter of head height gives 1.4 PSI. Edited November 27, 2016 by figgy Quote Link to comment Share on other sites More sharing options...
Remimax Posted November 27, 2016 Report Share Posted November 27, 2016 that sounds like a fun job,time to get yer drysuit on :)if you dig a decent hole round it maybe a trash pump and open valve swap would be possible if you can match the flange. prob talking out me **** as flow /pressure will be to high. Quote Link to comment Share on other sites More sharing options...
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