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Solenoid Valve for Water Main NJ 07-14-2007
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Posted by Speedy Jim on July 14, 2007, 1:07 pm
NJ wrote:
> Hello,
>
> I recently installed an alarm system in my home and as part of the
> alarm system want to install a solenoid valve right after my water
> meter. This would allow me to have the alarm turn off the water when
> we leave the house (and forestall a diasater should a pipe break).
>
> I have looked up solenoid valves on Grainger and believe the one shown
> below will work for me:
>
> http://www.grainger.com/Grainger/items/3UK70
>
> My only concern is that there is no technical data if this valve is
> rated for potable water. Does anyone have any experience with this?
>
> Thanks
>


From the Grainger page:

" Warning: This product contains a product known to the State of
California to cause cancer.
Warning: This product contains a chemical known to the State of
California to cause birth defects or other reproductive harm."

My suspicion is that this will become an "over-engineered" project
no matter what...

Jim

Plumbing 468x60
Posted by Walter R. on July 14, 2007, 1:26 pm
Ever heard of Occam's Razor? Ever heard of Murphy's Laws? Ever heard of KISS
(Keep it simple, stupid)?

--
Walter
www.rationality.net
-
> Hello,
>
> I recently installed an alarm system in my home and as part of the
> alarm system want to install a solenoid valve right after my water
> meter. This would allow me to have the alarm turn off the water when
> we leave the house (and forestall a diasater should a pipe break).
>
> I have looked up solenoid valves on Grainger and believe the one shown
> below will work for me:
>
> http://www.grainger.com/Grainger/items/3UK70
>
> My only concern is that there is no technical data if this valve is
> rated for potable water. Does anyone have any experience with this?
>
> Thanks
>



--
Posted via a free Usenet account from http://www.teranews.com


Posted by hallerb@aol.com on July 14, 2007, 1:34 pm
> Ever heard of Occam's Razor? Ever heard of Murphy's Laws? Ever heard of KISS
> (Keep it simple, stupid)?
>
> --
> Walterwww.rationality.net
>
>
>
>
>
>
> > Hello,
>
> > I recently installed an alarm system in my home and as part of the
> > alarm system want to install a solenoid valve right after my water
> > meter. This would allow me to have the alarm turn off the water when
> > we leave the house (and forestall a diasater should a pipe break).
>
> > I have looked up solenoid valves on Grainger and believe the one shown
> > below will work for me:
>
> >http://www.grainger.com/Grainger/items/3UK70
>
> > My only concern is that there is no technical data if this valve is
> > rated for potable water. Does anyone have any experience with this?
>
> > Thanks
>
> --
> Posted via a free Usenet account fromhttp://www.teranews.com- Hide quoted text
-
>
> - Show quoted text -

first i used a similiar valve years ago at my moms home, it had
troubles, limited flow at high levels, and wierd effects at low flow.
its main use was for a dishwasher that had to be in the dining room,
turn power on to dishwasher, water on too. to prevent floods.

was so intrigued by that valve tried using it for other things and
gave up.

imagine a power failure in a emergency, when you really needed water
like a fire.

a ball valve 1/4 turn on main way better choice.

try to automate things too much and the equiptement may cause worse
troubles of its own:(


Posted by HeyBub on July 14, 2007, 3:24 pm
hallerb@aol.com wrote:
>
> imagine a power failure in a emergency, when you really needed water
> like a fire.
>
> a ball valve 1/4 turn on main way better choice.
>
> try to automate things too much and the equiptement may cause worse
> troubles of its own:(

In the book, "SystemAntics," one finds the rule:

"Fail-safe systems fail by failing to fail safe."

Consider automobile brakes. Originally, you stepped on a pedal which pulled
a wire that expanded the brake shoes.

Then came hydraulic brakes. Then power-assisted brakes. Then dual-brakes.
Now anti-lock. The number of parts in the brake system has grown by two
orders of magnitude, each part with its own potential of failure.



Posted by dpb on July 14, 2007, 3:51 pm
HeyBub wrote:
> hallerb@aol.com wrote:
>> imagine a power failure in a emergency, when you really needed water
>> like a fire.
>>
>> a ball valve 1/4 turn on main way better choice.
>>
>> try to automate things too much and the equiptement may cause worse
>> troubles of its own:(
>
> In the book, "SystemAntics," one finds the rule:
>
> "Fail-safe systems fail by failing to fail safe."
>
> Consider automobile brakes. Originally, you stepped on a pedal which pulled
> a wire that expanded the brake shoes.
>
> Then came hydraulic brakes. Then power-assisted brakes. Then dual-brakes.
> Now anti-lock. The number of parts in the brake system has grown by two
> orders of magnitude, each part with its own potential of failure.

But, in terms of catastrophic brake failures, the overall system failure
rates are lower than they were back when...

For one thing, there are many portions of those systems in that total
part count that aren't single-point failure-causing if they do fail
(anti-lock feature, for one) and in addition, some of those parts are
added redundancy (split cylinder, for example).

--

Page 4 of 5       < 1 2 3 > last >>
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