I am looking for a 3/4" version to the ID-996 1/2" Liquid Solenoid Valve that is listed in the sensors section (ID-996). I thought about getting (2) 1/2" valves, but I do not want to increase the possibility of another thing going wrong. Has anyone run across a site that has 3/4" valves? The only ones I have found that will not empty your pocket book are located in China.
Thanks
Don
3/4" Liquid Solenoid Valve
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- Franklin97355
- Posts: 23911
- Joined: Mon Apr 21, 2008 2:33 pm
Re: 3/4" Liquid Solenoid Valve
https://www.sparkfun.com/products/10456 There are some on ebay too. Just what are the specs you need to meet?
- lyndon
- Posts: 281
- Joined: Tue Mar 29, 2011 5:28 pm
Re: 3/4" Liquid Solenoid Valve
I bought some 1/2" & 1/4" ones from Valves4Projects on eBay. I'm positive they also had 3/4" ones. Prices around $15 or so, shipping included.
- mustang65
- Posts: 54
- Joined: Sat Jan 26, 2013 9:29 pm
Re: 3/4" Liquid Solenoid Valve
The requirements for the valve are
3/4" Brass
Normally open (NO)100Psi
Sorry about not mentioning the NORMALLY OPEN requirement, the ones that I have located have all been NORMALLY CLOSED. This is going to be used on the main water supply into the house, and I only want to supply voltage to the valve when the house sensors determine that there is a leak or when we go away for any length of time. Trying to keep this as GREEN as possible. I thought about going SOLAR with a small battery backup system, but I would still like to keep phase 1 of the project as simple as possible. So far I have the Xbee and Arduino circuit set up, just need to set up the sensors and FLOW Valve. If I can not locate Normally open valves I wonder if the Normally Closed valve can be modified to be a normally open valve
Thanks
Don
I saw some Normally Closed valves on Amazon, but no Normally open. May have to redesign the project?????
3/4" Brass
Normally open (NO)100Psi
Sorry about not mentioning the NORMALLY OPEN requirement, the ones that I have located have all been NORMALLY CLOSED. This is going to be used on the main water supply into the house, and I only want to supply voltage to the valve when the house sensors determine that there is a leak or when we go away for any length of time. Trying to keep this as GREEN as possible. I thought about going SOLAR with a small battery backup system, but I would still like to keep phase 1 of the project as simple as possible. So far I have the Xbee and Arduino circuit set up, just need to set up the sensors and FLOW Valve. If I can not locate Normally open valves I wonder if the Normally Closed valve can be modified to be a normally open valve
Thanks
Don
I saw some Normally Closed valves on Amazon, but no Normally open. May have to redesign the project?????
- Franklin97355
- Posts: 23911
- Joined: Mon Apr 21, 2008 2:33 pm
Re: 3/4" Liquid Solenoid Valve
There were some ball valves in the Google search which would be only powered when you were moving them. If you have a power outage you might have a problem with a normally open valve AND a leak. (burst pipes in winter with power down....)
-
- Posts: 24
- Joined: Mon Mar 03, 2014 11:06 am
Re: 3/4" Liquid Solenoid Valve
To follow on from the post above:
If you want to do it then it's an interesting project, but I've very strongly recommend keeping your existing manual water stop value in the circuit, and cutting this in as a second valve. That way, if your circuit ever has an issue, you have a fall back that will always work.
Another option, if you are struggling to find a 3/4" NO valve is to cut in perhaps a 1/2 meter section of 1/2inch pipe to the circuit and use a 1/2inch valve. Remember though that in a section of pipe where you go from 3/4inch to 1/2 inch, the pressure will be higher, so, depending on the mains water pressure coming into the house, you may either need a more powerful valve, or to pull more current with the existing valve.
Lastly, I would consider running this off a largish lead-acid battery with a solar trickle charger setup. It may be months/years before you need to invoke the circuit, and LiPo's aren't the best for leaving on hand for very long term trickle charging.
STeve
If you want to do it then it's an interesting project, but I've very strongly recommend keeping your existing manual water stop value in the circuit, and cutting this in as a second valve. That way, if your circuit ever has an issue, you have a fall back that will always work.
Another option, if you are struggling to find a 3/4" NO valve is to cut in perhaps a 1/2 meter section of 1/2inch pipe to the circuit and use a 1/2inch valve. Remember though that in a section of pipe where you go from 3/4inch to 1/2 inch, the pressure will be higher, so, depending on the mains water pressure coming into the house, you may either need a more powerful valve, or to pull more current with the existing valve.
Lastly, I would consider running this off a largish lead-acid battery with a solar trickle charger setup. It may be months/years before you need to invoke the circuit, and LiPo's aren't the best for leaving on hand for very long term trickle charging.
STeve
- mustang65
- Posts: 54
- Joined: Sat Jan 26, 2013 9:29 pm
Re: 3/4" Liquid Solenoid Valve
I contacted 3 companies today and they suggested using a motorized ball valve. These valves do not require a constant 12VDC power source to keep them open or closed. They only need power to change from one position to another. The valve uses about 4 watts when the motor is activated for about 5 seconds per position change, so that will not have much of an impact on the batteries (I have 2 Sealed batteries 12volt/12Ah, that will be connected to a small 12 volt solar panel from am old yard light system). The Xbee and flow sensor will not be much of a drain on the battery either. So I ordered a 3/4" Ball Valve today. I will keep you updated with the status of the project. Need to start digging up 50' of old water pipe so I can replace it and install the valve and flow sensor. There is a manual shut off on the city water meter if something should go wrong.
Thanks for the suggestions,
Don
Thanks for the suggestions,
Don
- mustang65
- Posts: 54
- Joined: Sat Jan 26, 2013 9:29 pm
Re: 3/4" Liquid Solenoid Valve
Sorry, I forgot to post the valve that I purchased on Amazon.
Don
http://www.amazon.com/MISOL-motorized-e ... ball+valve
Don
http://www.amazon.com/MISOL-motorized-e ... ball+valve
Please be positive and constructive with your questions and comments.