Solenoid Valve for water supply

[AlfaRomeo]

Dudes,

Do you have any idea where to get the Solenoid Valve to be attached to the water piping? should be a normally close valve so that in case there is an electricity outage, the valve will not be open and thus causing a flood.

So will appreciate it if you know any shops selling these and the rough price of suxh a device?

TIA, Cheers!

[panlee]

Are you talking about putting a valve inline with your sump pump to main tank, to stop water from siphoning back to your sump?

I was thinking of adding one too but change my mind and go with the easier method: drill a small hole at the end of the pipe at main tank end. When there is a power failure, the small hole will break the siphon.

[AlfaRomeo]

Hi Panlee, nope, not talking about the break siphon hole but rather a solenoid to be attached at the water supply pipe inline before my RO/DI unit which can be controlled by the TUBBY or similar device.

Thanks for the input anyway :-)

[AlfaRomeo]

Also been thinking about it and have roughly decided to buy a TUBBY unit and let it control a Solenoid valve attached on the mains pipe before my RO/DI. The float sensor will be in my top-up tank with an overflow hole drilled to prevent floods due to solenoid valve failures.

Also will need another Tubby to detect low level of water in my sump which will pump water from the top up tank.

Hope the above makes sense to you all. Any loopholes that u can see?

Also, where can i get a metering pump for the top-up to the sump cos i will be planning to add a kalk reactor to the setup in the near future

Thanks!

[Hon]

Hi Alfaromeo,

I'm using a soleniod attach to the household tap supply for auto topup. You can get the valve from RS Singapore, they deliver to your house at no charge.

I choose the 12v DC version for safety reason.

[AlfaRomeo]

Hi Hon, thanks for the link.. have checked it out and its exactly what i need.

How do yo connect the 12v DC iup to the auto-up unit pls?

[Hon]

This is how my auto top-up works.

When the water level probe detect water level low

It trigger a power socket and supply power to a DC adaptor.

When the soleniod is energised by the 12v DC adaptor, the valve open.

Valve will remain open until the power is cut by the signal from water level probe.

Since its a normally close valve, any power failure will not cause water to leak out.

[MarineLive]

Anyone know where to get a float switch for the above function.

Regards

[ZeRoC00l]

float switch available from Sim Lim tower basement. corner shop with LED / various display unit.

sorry dun rememebr shop name

To: Hon

May i know which model are you using? Found many 24V and 240V tyopes but none that are 12V

Thank you

[Hon]

Hi Zerocool,

The site seem to have session cookies.

You can go to the driect URL at http://www.rssingapore.com/

then click on

Automation --> Control Products - Flow & Level --> Solenoid Valves --> 2-Way Water

That's the valve i'm using.

[vincent]

Hi Hon,

What material is the Solenoid Valve made of can use for salt water?

thanks

[Hon]

Hi vincent,

Don't think the valve can be come in contact with salt water. There is a servo spring acting inside which will corrode in salt water. Furthermore the connecting nut on both end are made of brass. It's only suitable to come in contact with plain water.

There are some other more expensive valve in the page, maybe those are salt resistance.

[vincent]

thanks