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#1
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Pressure relief valve
I own a cabin. I want to install some sort of automatic valve so that when
I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve |
#2
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Pressure relief valve
On Jul 8, 11:14*am, "Steve B" wrote:
I own a cabin. *I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. *Is there such a thing made? Steve No such thing exists... You have to install a drain valve in close proximity to the main shut off but between the main and the fixtures and then go around and open the valves on each fixture supplied by the plumbing to get all of the water out of the lines... Don't forget to pour Propylene glycol in the drain traps as those can freeze and cause leaks too... |
#3
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Pressure relief valve
On Jul 8, 11:29*am, Evan wrote:
On Jul 8, 11:14*am, "Steve B" wrote: I own a cabin. *I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. *Is there such a thing made? Steve Inquiring minds want to know why is this is necessary? What it takes to completely drain any water system is going to depend on what all there is to drain and how it's piped. At the very least, you need to not only open a valve at the lowest point, but also faucets or other ways for air to enter at the high points. No such thing exists... At least no ready made, practicl thing, that's for sure. You have to install a drain valve in close proximity to the main shut off but between the main and the fixtures and then go around and open the valves on each fixture supplied by the plumbing to get all of the water out of the lines... Don't forget to pour Propylene glycol in the drain traps as those can freeze and cause leaks too... |
#4
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Pressure relief valve
On Jul 8, 11:14*am, "Steve B" wrote:
I own a cabin. *I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. *Is there such a thing made? Steve you could install a compressor to blow out the lines and some solenoid valves. replace all water lines with PEX its freeze resistant |
#5
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Pressure relief valve
On 7/8/12 11:14 AM, Steve B wrote:
I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve There is such a thing that is used in underground lawn sprinkler systems. I have them installed on mine in both the constant pressure runs and the timer controlled runs. On winter shutdown, you will need to open highest faucets etc to allow air into lines, and releave pressure in lines. http://www.rainbird.com/homeowner/pr...DrainValve.htm |
#6
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Pressure relief valve
"Steve B" wrote:
I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve Look up draining a trailer. Not sure how fellow did mine. Put glycol in system and hot water tank after pushing or sucking out water. Greg |
#7
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Pressure relief valve
On Sun, 8 Jul 2012 08:29:23 -0700 (PDT), Evan
wrote: On Jul 8, 11:14Â*am, "Steve B" wrote: I own a cabin. Â*I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Â*Is there such a thing made? Steve No such thing exists... You have to install a drain valve in close proximity to the main shut off but between the main and the fixtures and then go around and open the valves on each fixture supplied by the plumbing to get all of the water out of the lines... Don't forget to pour Propylene glycol in the drain traps as those can freeze and cause leaks too... There IS such a thing as an automatic drain valve. Commonly used in sprinkler systems. Flomatic also makes one for domestic water systems. The Flomatic model 70 will likely do your job and they are reasonably priced. Then there are the Ogontz antifreeze valves that are temperature actuated and drain when the temperature approaches freezing. The sprinkler system valves are quite commonly used in "seasonal" trailers andcabins. |
#8
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Pressure relief valve
On Sun, 08 Jul 2012 12:47:30 -0400, Reed wrote:
There is such a thing that is used in underground lawn sprinkler systems. I have them installed on mine in both the constant pressure runs and the timer controlled runs. On winter shutdown, you will need to open highest faucets etc to allow air into lines, and releave pressure in lines. http://www.rainbird.com/homeowner/pr...DrainValve.htm I read of these in irrigation systems. Called a "positive drain valve". I could not find it under that name (couple of tries). Your link appears to be the same / similar, named differently. In the irrigation, the valve is on a long end run and drains into a sand dry well. When the sprinklers turn off the pipes drain as the valve opens. My pool solar has a drain valve at the top. When water pressure is off the solar unit drains completely. No need for winterization. Thanks for that link. |
#9
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Pressure relief valve
On Jul 8, 1:09*pm, wrote:
On Sun, 8 Jul 2012 08:29:23 -0700 (PDT), Evan wrote: On Jul 8, 11:14*am, "Steve B" wrote: I own a cabin. *I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. *Is there such a thing made? Steve No such thing exists... You have to install a drain valve in close proximity to the main shut off but between the main and the fixtures and then go around and open the valves on each fixture supplied by the plumbing to get all of the water out of the lines... Don't forget to pour Propylene glycol in the drain traps as those can freeze and cause leaks too... *There IS such a thing as an automatic drain valve. Commonly used in sprinkler systems. Flomatic also makes one for domestic water systems. The Flomatic model 70 will likely do your job and they are reasonably priced. You would have to use many of these to cover the lowest point in the system and all the high points in the various lines. I don't see it as being practical. Installing them in existing sinks, baths etc would not only be a pain, but would introduce more points for leaks in places that you don't want to leak. One of those spring loaded valves gets some debris in it, fails to shut fully, and then what? The real question here is what's the need? Why can't the cabin be drained by just shutting a valve, opening a drain or two and turning on the faucets? Then there are the Ogontz antifreeze valves that are temperature actuated and drain when the temperature approaches freezing. The sprinkler system valves are quite commonly used in "seasonal" trailers andcabins.- Hide quoted text - - Show quoted text - I hope they aren't being used for potable water systems, unless they are rated for them. |
#10
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Pressure relief valve
"gregz" wrote in message ... "Steve B" wrote: I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve Look up draining a trailer. Not sure how fellow did mine. Put glycol in system and hot water tank after pushing or sucking out water. Greg Glycol antifreezes are toxic. Google it. I use alcohol based RV antifreezes. The hot water tank needs no antifreeze if you open the valves and let it drain completely. Steve |
#11
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Pressure relief valve
On 7/8/2012 8:29 AM, Evan wrote:
On Jul 8, 11:14 am, "Steve wrote: I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve No such thing exists... You have to install a drain valve in close proximity to the main shut off but between the main and the fixtures and then go around and open the valves on each fixture supplied by the plumbing to get all of the water out of the lines... Don't forget to pour Propylene glycol in the drain traps as those can freeze and cause leaks too... Of course it exists! Used all the time in agriculture irrigation systems to drain the water automatically so the pipes can be easily moved. Find an irrigation supply store and ask. Water pressure will keep it closed. Paul |
#12
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Pressure relief valve
On 7/8/2012 10:14 AM, Steve B wrote:
I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve there is such a thing for irrigation systems, but there's NO WAY there's a common low point in a house system that would allow EVERY pipe to drain. You have to blow them and preferably follow the blow with some pink, and blow again. -- Steve Barker remove the "not" from my address to email |
#13
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Pressure relief valve
On 7/8/12 10:14 AM, Steve B wrote:
I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve Yes. The ones for center pivot irrigation systems would work but are 1". I suppose there are some made for hand move sprinkler lines also. Then there are the ones others mentioned for the lawn sprinklers. I'd be tempted to mount a cheap air compressor near the water supply. Drain the water as much as possible, then use air to push the remaining water out of the supply lines. |
#14
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Pressure relief valve
On Sun, 8 Jul 2012 12:48:44 -0700, "Steve B" wrote:
"gregz" wrote in message ... "Steve B" wrote: I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve Look up draining a trailer. Not sure how fellow did mine. Put glycol in system and hot water tank after pushing or sucking out water. Greg Glycol antifreezes are toxic. Propylene glycol is non-toxic. It's often used for plumbing in potable water systems and is even a food additive. Google it. I use alcohol based RV antifreezes. I bet it's propylene glycol. Alchohol would evaporate too readily. The hot water tank needs no antifreeze if you open the valves and let it drain completely. |
#15
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Pressure relief valve
On 7/8/2012 2:48 PM, Steve B wrote:
.... Glycol antifreezes are toxic. Google it. I use alcohol based RV antifreezes. The hot water tank needs no antifreeze if you open the valves and let it drain completely. .... Not all, no...ethylene glycol is the automotive use and is; propylene glycol is a very widely used diol(+) in many places including as a potable-water anti-freeze. Almost certainly that is what your RV antifreeze is. (+) diol - a double alcohol (a hydroxyl group attached to C) A 'glycol' is any of a class of belonging to the alcohol family So you're right it's an alcohol; but it's also a glycol, just not ethylene glycol and it isn't seriously toxic, fortunately. If ingested the metabolism process does produce propionaldehyde, which is potentially hazardous at very high concentrations but it would be nearly impossible to reach toxic levels by consuming anything but it directly and thus is classified by US FDA as "generally recognized as safe" for use as a direct food additive. -- |
#16
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Pressure relief valve
Steve B wrote:
I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? You could use a "three way" ball valve as the shutoff, so when you shut off the water, the house pipeing opens to a drain. Assuming that the pipeing was designed to naturally flow towards that valve from all the fixtures, that might do it. A pipe from the highest point of each major run to an outside sprinkler drain valve would help speed the flow of water out by admitting air when the pressure drops. Faster flow would help get the most water out of the pipes. |
#17
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Pressure relief valve
"Steve B" wrote:
"gregz" wrote in message ... "Steve B" wrote: I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve Look up draining a trailer. Not sure how fellow did mine. Put glycol in system and hot water tank after pushing or sucking out water. Greg Glycol antifreezes are toxic. Google it. I use alcohol based RV antifreezes. The hot water tank needs no antifreeze if you open the valves and let it drain completely. Steve I was given rv propylene glycol antifreeze, RV. I'm sure the guy knows how to fix it up for the winter. He probably has done hundreds of trailers. I never looked it up. I would want a pump or shop vac the system. The tubing goes up, down, around, and inconceivable that it would not get stuck in parts of the tubing. Purging the system with antifreeze, should get some in all tanks. Greg |
#18
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Pressure relief valve
"dpb" wrote in message ... On 7/8/2012 2:48 PM, Steve B wrote: ... Glycol antifreezes are toxic. Google it. I use alcohol based RV antifreezes. The hot water tank needs no antifreeze if you open the valves and let it drain completely. ... Not all, no...ethylene glycol is the automotive use and is; propylene glycol is a very widely used diol(+) in many places including as a potable-water anti-freeze. Almost certainly that is what your RV antifreeze is. (+) diol - a double alcohol (a hydroxyl group attached to C) A 'glycol' is any of a class of belonging to the alcohol family So you're right it's an alcohol; but it's also a glycol, just not ethylene glycol and it isn't seriously toxic, fortunately. If ingested the metabolism process does produce propionaldehyde, which is potentially hazardous at very high concentrations but it would be nearly impossible to reach toxic levels by consuming anything but it directly and thus is classified by US FDA as "generally recognized as safe" for use as a direct food additive. -- Now I am confused. You say one thing, the internet says another. Yes, ig does say that propylene glycol is fairly safe, but that ethylene glycol is definitely toxic. And then, I read the label on my RV antifreeze, and it is composed of alcohol mostly. I don't know who to believe, or what I read. I'll just keep with what I think is safe. Steve |
#19
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Pressure relief valve
On 7/8/2012 8:15 PM, Steve B wrote:
.... Now I am confused. You say one thing, the internet says another. ... "The internet" is about as nebulous as you can get--what specific piece on the internet did you find that you think disagrees with what I said? (I can assure you if it does, its wrong. ) does say that propylene glycol is fairly safe, but that ethylene glycol is definitely toxic. That's exactly what I said. What's the problem? The definition of a glycol is any a molecule that contains two hydroxyl groups. An alcohol is any organic compound in which a hydroxyl functional group (OH) is bound to a carbon atom. Acyclic alcohols such as ethanol (the drinking kind) and methanol ("wood or rubbing" alcohol which is also toxic) have only a single hydroxyl group. They're alcohols, too, but they're not glycols because don't have the second hydroxyl group. So, the glycol is a chemical term that describes a particular class of alcohols, of which ethylene and propylene are commonly used for antifreeze. They are different from each other despite both being glycols just as ethanol and methanol in one being quite toxic, the other not. It is that 'glycol' is a general descriptive term, not specific to only one compound. And then, I read the label on my RV antifreeze, and it is composed of alcohol mostly. Yes, propylene glycol is an alcohol--see above. So is ethylene glycol. _Any_ glycol is an alcohol by definition; just a specific type of an alcohol. I don't know who to believe, or what I read. http://chemistry.about.com/od/dictionariesglossaries/g/defalcohol.htm http://chemistry.about.com/od/chemistryglossary/g/Glycol-Definition.htm A good, basic site that is accurate...the above links are the definitions; there are links there to specifics. -- |
#20
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Pressure relief valve
On Sun, 8 Jul 2012 12:48:44 -0700, "Steve B" wrote:
"gregz" wrote in message ... "Steve B" wrote: I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve Look up draining a trailer. Not sure how fellow did mine. Put glycol in system and hot water tank after pushing or sucking out water. Greg Glycol antifreezes are toxic. Google it. I use alcohol based RV antifreezes. The hot water tank needs no antifreeze if you open the valves and let it drain completely. Steve Propylene glycol is non toxic- commonly sold as "plumbing antifreeze" |
#21
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Pressure relief valve
"dpb" wrote in message ... On 7/8/2012 8:15 PM, Steve B wrote: ... Now I am confused. You say one thing, the internet says another. ... "The internet" is about as nebulous as you can get--what specific piece on the internet did you find that you think disagrees with what I said? (I can assure you if it does, its wrong. ) does say that propylene glycol is fairly safe, but that ethylene glycol is definitely toxic. That's exactly what I said. What's the problem? The definition of a glycol is any a molecule that contains two hydroxyl groups. An alcohol is any organic compound in which a hydroxyl functional group (OH) is bound to a carbon atom. Acyclic alcohols such as ethanol (the drinking kind) and methanol ("wood or rubbing" alcohol which is also toxic) have only a single hydroxyl group. They're alcohols, too, but they're not glycols because don't have the second hydroxyl group. So, the glycol is a chemical term that describes a particular class of alcohols, of which ethylene and propylene are commonly used for antifreeze. They are different from each other despite both being glycols just as ethanol and methanol in one being quite toxic, the other not. It is that 'glycol' is a general descriptive term, not specific to only one compound. And then, I read the label on my RV antifreeze, and it is composed of alcohol mostly. Yes, propylene glycol is an alcohol--see above. So is ethylene glycol. _Any_ glycol is an alcohol by definition; just a specific type of an alcohol. I don't know who to believe, or what I read. http://chemistry.about.com/od/dictionariesglossaries/g/defalcohol.htm http://chemistry.about.com/od/chemistryglossary/g/Glycol-Definition.htm A good, basic site that is accurate...the above links are the definitions; there are links there to specifics. That's all very nice. Do you have anything to add about the valves? You know, the topic of the question. Steve |
#22
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Pressure relief valve
On Sun, 08 Jul 2012 15:26:03 -0500, Steve Barker
wrote: On 7/8/2012 10:14 AM, Steve B wrote: I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve there is such a thing for irrigation systems, but there's NO WAY there's a common low point in a house system that would allow EVERY pipe to drain. You have to blow them and preferably follow the blow with some pink, and blow again. A seasonal cabin, plumbed by a competent plumber WILL have a low point that drains the entire cottage water system from one point. It is something that needs to be done at least once a year - oftener if the cottage is used periodically during the winter months for skiing, snowmobiling etc. Most "trailer" homes are also plumbed with this in mind.. |
#23
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Pressure relief valve
On 7/8/2012 9:46 PM, Steve B wrote:
wrote in message ... On 7/8/2012 8:15 PM, Steve B wrote: ... Now I am confused. You say one thing, the internet says another. ... .... That's all very nice. Do you have anything to add about the valves? You know, the topic of the question. Yeah, they'll be fine w/ the alcohol... -- |
#24
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Pressure relief valve
On 7/8/2012 10:49 PM, dpb wrote:
.... Yeah, they'll be fine w/ the alcohol... .... Excuse me, that would be "glycol" Sorry for thinking that somebody on usenet might actually like to learn some basic chemistry and remove the underpinnings of a misconception. What _was_ I thinking???? -- |
#25
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Pressure relief valve
On Jul 8, 1:09*pm, wrote:
On Sun, 8 Jul 2012 08:29:23 -0700 (PDT), Evan wrote: On Jul 8, 11:14*am, "Steve B" wrote: I own a cabin. *I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. *Is there such a thing made? Steve No such thing exists... You have to install a drain valve in close proximity to the main shut off but between the main and the fixtures and then go around and open the valves on each fixture supplied by the plumbing to get all of the water out of the lines... Don't forget to pour Propylene glycol in the drain traps as those can freeze and cause leaks too... *There IS such a thing as an automatic drain valve. Commonly used in sprinkler systems. Flomatic also makes one for domestic water systems. The Flomatic model 70 will likely do your job and they are reasonably priced. Then there are the Ogontz antifreeze valves that are temperature actuated and drain when the temperature approaches freezing. The sprinkler system valves are quite commonly used in "seasonal" trailers andcabins. Sprinkler System valves are not approved for potable water systems... Also there is nothing that can "automatically" drain a plumbing system with one device or valve, without also installing "automatic" valves which open at the high points on each branch of the piping to admit air and allow the pipes to drain... |
#26
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Pressure relief valve
wrote:
On Sun, 08 Jul 2012 15:26:03 -0500, Steve Barker wrote: On 7/8/2012 10:14 AM, Steve B wrote: I own a cabin. I want to install some sort of automatic valve so that when I shut the water off, all the water in the lines drain out. Is there such a thing made? Steve there is such a thing for irrigation systems, but there's NO WAY there's a common low point in a house system that would allow EVERY pipe to drain. You have to blow them and preferably follow the blow with some pink, and blow again. A seasonal cabin, plumbed by a competent plumber WILL have a low point that drains the entire cottage water system from one point. It is something that needs to be done at least once a year - oftener if the cottage is used periodically during the winter months for skiing, snowmobiling etc. Most "trailer" homes are also plumbed with this in mind.. I got a one way input valve on my trailer, but wondering if it has an air bladder. I only had his for half year, still learning. An 88 , has plastic piping of some sort. No cold water tank. Greg |
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