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I got the idea from the pistol nozzle attachment you
commonly find on garden hoses. With such a garden
you turn on the faucet and when you need the water, you
pull the trigger. The water runs through the hose no
matter what, but it's not actually going anywhere unless
you pull the trigger.
idea is pretty simple - a showerhead with a lever-
operated release valve. When you turn on the water, you
leave the valve closed so water goes through the heater
but not down the drain. After a while, you can flip the
lever quickly to let out a small amount of water to test
heat. If it's where you want it, open it up all the way and
take a shower.
Perhaps a more expensive model would feature a
thermometer to tell you exactly how hot it is. It could
have programmable presets for the ideal temperatures
each person in the house. With a preset system, you
turn on the water, press your preset button, and wait for
the alarm to go off telling you it had reached your
Hot water return line
Sounds like what you want. [csea, Jul 29 2010]
Enviro save water system
[spidermother, Jun 08 2011]
||//so water goes through the heater but not down the drain.// - well, then, where *does* it go? It can't go back into the heater - the pressure that pushed it out is sufficient to keep it from going back.
||So it's either pump it back, run down the drain, or __________. (fill in the blank, please)
||See [link] for discussion of same idea for kitchen sink tap water.
||directing the flow back to the hot water tank would be the most efficient path. this does require a small circulation pump.
||There are lever-shutoff shower heads out in the world already. But there aren't very many return-flow lines in "old plumbing" systems. I am confused.
||Won't work without a return line, so the idea as posted is unlikely.
||"Old plumbing" has long been updated to "new plumbing" by the replacement of defective plumbing parts and a bunch of and carpentry, and occasional gas &/or electrical work.
||Perhaps the poster is proposing a retrofit consisting of a return line installed concentric with the hot water source. I am also confused.
||as i read this the water i the boiler is going nowere,
it's just getting hotter,
until you pull the release valve [or the boiler gose bang]
||This has been baked. The water flows into a small pressurised holding tank. After the lever is switched, the tank is connected to the cold water line.
|| Linky. It has an automatic temperature sensor, rather than a manual valve.