PuppetLight Posted September 22, 2015 Share Posted September 22, 2015 Hi All Currently working on an opera in which we have a tap on stage that is required to work. The tap is situated under a window, and on top of a cupboard, but as the set is revolving there is only about 6 inches in depth to store a water tank in the walls. If anyone can come up with a suggest a solution (hopefully with product/part names) where a pump does not have to be used for fear of it drowning out the opera singers (unless it is no louder than a moving head) ANY advice or ideas would be greatly appreciated. Link to comment Share on other sites More sharing options...
Hilary Watts Posted September 22, 2015 Share Posted September 22, 2015 For how long does the tap have to run, or to put it another way, how much water does it need to produce? On the assumption that you can't simply run a temporary hosepipe to the mains (although that might not be totally impossible depending on how fast and how far the set revolves) then the water will have to be stored in a tank of some sort and the quantity of water required will dictate the minimum size for the tank. ... unless you simply want the illusion of water flowing in which case a floating tap might work. Link to comment Share on other sites More sharing options...
J Pearce Posted September 22, 2015 Share Posted September 22, 2015 Think about something like a bag from a box of wine, get it as high as possible in the set and pipe from there. If you used a solar shower bag with a 1m raise from the tap I expect you could get a good pressure with a reasonable run time. Alternatively, and more complex, I'm wondering if a tank could be put in the cupboard, half filled, then use a bike pump to pressurise the air and use that pressure to push the water up and out of the tap. The feed to the tap would have to come out of the bottom of the tank. You could even have an ASM on the upstage side of the wall continuing to pump in an extended run time was needed. Link to comment Share on other sites More sharing options...
ImagineerTom Posted September 22, 2015 Share Posted September 22, 2015 google for a "solar shower" and that will give you a surprisingly adaptable, durable water tank that will fit in to all sorts of small places and comes with an outlet pipe which can quickly be plumbed up to most standard domestic plumbing systems. t Link to comment Share on other sites More sharing options...
cedd Posted September 22, 2015 Share Posted September 22, 2015 And if for any reason a gravity fed system won't work, there are plenty of very quiet water pumps out there that'll do the job. Submersible pumps in particular are nice and quiet because they sit under the water. You might even get away with a pond pump - they make 12v variants. You could have the tap open all the time and switch the 12V to the pump in order to make the water start. Is there a sink as part of the setup or is it just a tap on the wall? If it's a sink then you could even connect the waste back to your reservoir so it could run forever. Link to comment Share on other sites More sharing options...
sleah Posted September 22, 2015 Share Posted September 22, 2015 A 12v pressure activated caravan/motorhome pump is what you are after. Search for water products for caravans, there are a few to choose from.I'm sure you could bury one in a box with some insulation round to reduce any noise. It could be powered of any old 12v battery, an alarm back-up type would be good for a few minutes at least. Use a lead acid and you can charge from a car battery charger to avoid buying a specialist charger.This is assuming you can fit a tank - think 20L jerry can - somewhere. Link to comment Share on other sites More sharing options...
andy_s Posted September 22, 2015 Share Posted September 22, 2015 Think about something like a bag from a box of wine, get it as high as possible in the set and pipe from there. If you used a solar shower bag with a 1m raise from the tap I expect you could get a good pressure with a reasonable run time. Alternatively, and more complex, I'm wondering if a tank could be put in the cupboard, half filled, then use a bike pump to pressurise the air and use that pressure to push the water up and out of the tap. The feed to the tap would have to come out of the bottom of the tank. You could even have an ASM on the upstage side of the wall continuing to pump in an extended run time was needed. to save making a hole in the bottom of the container, which might leak, make a hole above the waterline and push a flexible tube through it down to the bottom of the tank / container. or even just buy a hozelok* sprayer and plumb it on to the end of the tap. Pump and water container combined in one. no electricity (AC or DC) required. *other manufacturers are available Link to comment Share on other sites More sharing options...
dbuckley Posted September 22, 2015 Share Posted September 22, 2015 Or the water can be delivered by means of compressed air or CO2; A csmall compressed gas cylinder, such as a sodastream CO2 cylinder, a two gauge regulator off eBay, adapters as necessary, and this pressurises the water container. For a very small deployment, an oversized water container and a bicycle pump might do. Link to comment Share on other sites More sharing options...
OddSocks Posted September 23, 2015 Share Posted September 23, 2015 You could use a solar shower bag at ground level with weights applied on top to create the pressure. Link to comment Share on other sites More sharing options...
ImagineerTom Posted September 23, 2015 Share Posted September 23, 2015 you couldn't... ...well I mean technically you could but in order to get anything resembling "pressure" coming out of a tap 1m off the ground you'd be needing a LOT of weights and some sort of regulator valve arrangement to ensure that the effect lasted more than a couple of seconds. Link to comment Share on other sites More sharing options...
Jivemaster Posted September 23, 2015 Share Posted September 23, 2015 'Til we know how symbolic/functional this tap has to be, no-one knows whether it's a hydrant that's needed or a saline drip bag. Nor do we know whether it's used -drunk or put on plants- or drained, or whether it can be recycled. Many questions no OP :( Link to comment Share on other sites More sharing options...
musht Posted September 23, 2015 Share Posted September 23, 2015 12V bilge pumps are about cheapest LV high flow pumps around, needs to be submerged to keep it quiet. http://www.ebay.co.uk/itm/like/141379764974?adgroupid=&hlpht=true&hlpv=2&rlsatarget=&adtype=pla&ff3=1&lpid=122&poi=&ul_noapp=true&limghlpsr=true&ff19=0&device=c&chn=ps&campaignid=&crdt=0&ff12=67&ff11=ICEP3.0.0-L&ff14=122&viphx=1&ops=true&ff13=80 Link to comment Share on other sites More sharing options...
themadhippy Posted September 24, 2015 Share Posted September 24, 2015 A solar pumps would work well here,there small,not too noisy , can pump a decent head ,and they have standard 1/2" threaded in and outlet,one such pump http://www.ebay.co.uk/itm/12V-3M-Solar-Hot-Water-Pump-Circulation-Brushless-Motor-212-F-w-Coupler-HC-/261679419420?hash=item3ced4f101c Link to comment Share on other sites More sharing options...
propsman Posted September 24, 2015 Share Posted September 24, 2015 For a working tap on stage I usually use one of these If this cannot be concealed in the cupboard the tap is on then try a camping shower bag although the pressure is not as good as above. Link to comment Share on other sites More sharing options...
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