weight activated valve

[Sardo_Numpsa]

Hi,

I am trying to implement a mains backup solution for my water butt that complies with water regulations.

What I need is a valve which is opened when a weight pulls down on it, and closes when the weight is no longer applied.

Specifically, I want to attach weight to the valve via thin chain, and when the the chain is pulled by the weight the valve allows water to flow into the container, and once the weight is no longer pulling on the weight the flow of water is cut-off.

Is there such a valve? My Google searches suggest not but perhaps I am not using the right search criteria.

Any ideas?

 

[Sardo_Numpsa]

A diagram may help

 

[frodo]

http://www.homedepot.com/p/Homewerks-Worldwide-Self-Closing-Shower-Valve-with-Pull-Chain-in-Chrome-3070-300-CH-B/203875337?srccode=cii_10043468&cpncode=43-42709756-2&cm_mmc=shopping-_-shopzilla-_-D26-_-203875337

this what your looking for?




or this..

http://www.freedrinkingwater.com/images-parts/tank-float-valve-setup-red-new.jpg


heres s'more

http://www.ebay.com/sch/i.html?_nkw=water+float+valve

 

[Caduceus]

That's kinda like how a toilet tank refill works, yes? Interesting...very interesting.

 

[frodo]

That's kinda like how a toilet tank refill works, yes? Interesting...very interesting.

google, cooling tower make up water, if you want to see a whole bunch of different options. from manual, mechanical, automatic

 

[Caduceus]

google, cooling tower make up water, if you want to see a whole bunch of different options. from manual, mechanical, automatic

Yup. Plenty of cooling towers here.

 

[frodo]

google, cooling tower make up water, if you want to see a whole bunch of different options. from manual, mechanical, automatic

those valves make great for horse trough

in old bathtobs