I'm looking for a manufacturer of vented taps (=faucet in American
english) for use with small non-pressurised under counter water
heaters. To the user these taps look like an ordinary tap/faucet, but
underneath there are actually three connections not the one you'd
expect to see. One connection is for the cold water inlet and the
other two connect to the hot and the cold outlets of the water heater.
When you switch the tap/faucet on, water flows into the tap body, out
via the heater, back to the tap/faucet again and out of the spout. The
purpose of doing it this way is that the water heater is not
pressurised and so the arrangement is intrinsically safe, and the
water heater tank can be made of plastic.

If you look at the end of the document: www.zipindustries.com/pdfs/tudor.pdf
you'll see a schematic picture of how they work. 

This product is fairly common in Germany and Eastern Europe, I don't
know about elsewhere. I think Grohe of Germany make these taps, but
too expensive.

The taps can be simple hot only or mixer style.

I'd like contact details (ideally www) of existing manufacturers of
this product, or if this fails then contact details for tap
manufacturing companies (ideally in China) who have been contacted
would make one based on order size 1000 pcs.
The product should be chromed brass or simlar.

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Request for Question Clarification by cynthia-ga on 04 Jan 2005 13:17 PST

Tell me if this is what tyou aree looking for.  If so, I'll find the
manufacturers web site (if not in the PDF), and post in the Answer box
to receive payment.

Vortex Vented Faucets
http://www.performancedesign.net/pdf/VortexManual011003.pdf
Vortex vented faucets relieve all pressure on the unit when not in
use. Most other brands do not.

~~Cynthia

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Clarification of Question by hyco-ga on 05 Jan 2005 00:42 PST

Thanks Cynthia, you're in the right sort of area but the model you
refer to is for drinking water rather than hot water. I am aware those
but I need something those looks just like a regular kitchen
tap/faucet and that works with hot water.