Remote Valve?

I have an idea for a project, and I am trying to figure out a simple mechanism or valve that will be able to release fog produced by water and dry ice into a relatively small diameter tube. I would like it to be activated via remote, but other ideas are appreciated. My plan is to have a sealed container with water and dry ice on my back. Tubing would lead from the container to a mask I'm constructing. I am just trying to figure out a way in which I can control the release of the fog.

Topic by Moerdith   |  last reply


Looking for source for valve for home-made airgun/bb gun.

I'm an 11-year-old making a home-made airgun. I can't find the kind of valve I'm looking for. What kind of stores/websites should I be looking at to find valves?

Question by DevDev   |  last reply


solenoid valve control

Hi, im wanting to build somthing simple to control the heater control valve on my fiesta. its a simple solenoid valve at 0v its open(hot) at 12v(14.4v) its closed(cold) the propper control board uses pulses to control the valve, the board has since given up and im left with a very hot car, now i thought a simple way to sort the problem might be to use the 10k pot on the control board with a MOSFET and just vary the voltage going to the valve. will this have the same effect on the valve?

Topic by stevelee10   |  last reply


Small Electronic Valve?

So I was wondering if there was anyway I could make or buy an electronic air valve. What I need is something simmilar to a sprinkler valve only smaller and with smaller holes on each side so I could attach a relatively small air hose to it (~1/4" outer diameter). I plan on using this to replace the ball valve on my homemade nerf gun. Any help is appreciated :)

Question by Electroinnovation   |  last reply


Needle valve on the cheap?

I need a needle valve or similar to adjust some pressure with more or less precision. Problems I am facing with commercial solutions at the moment: Needs to withstand about 300psi max pressure, must survive contionous exposure to concentrated ammonia vapour. I already wasted too much money on stainless steel valves claiming to be chemical proof and capable of 6000psi only to find out they use seals that turn to goo in the ammonia vapour and fail. And since the stuff is not really healthy, not easy to get, I would prefer something safer. Real problem is also that the thing should be able to allow for good flow rates when opened fully. Modes of operation: During the active cycle ammonia vapour needs to pass through an opening as big as possible while after that the flow must be shut off. The reverse cycle needs to be adjustable from closed to fully open with great detail to control the flow rate. Current ways to compensate: With a ball valves and extra piping I could seperate the two cycles so I won't have to bother with tiny openings but I would prefer to use only a single connection. With a bypass around the needle valve this could be accomplished better but still looks ugly. Materials out of the question: Copper, brass, normal seals based on rubber, nitrile or similar. Questions: I know fully sealed in.line valves exist for LPG system and similar. Are any of these magnetic valves available for the use with ammonia? And if so: Can they be operated with a neodymium magnet instead of the coil? Even stainless steel valves rated for chemical use and high pressure fail quickly on the seals. Is there anything available that does not use soft seals but for example aluminium instead? Thinking spray pump here... One way ball valve systems like used in simple spray pumps are a great thing. With some aluminium tubing I was able to make a simple valve that with some more attention to detail might even work. But of course there no other way of moving the ball then to use a magnet and with sufficient back pressure even neodymium ones fail to get the ball in the open position and keep it there. Now getting this combine with a needle... If, instead of the ball, a magnet in a teflon shell is used on a spindle I could spin a magnet around the outside to turn the valve with great precision. Has anyone already designed such a thing or would I have to start from scratch here?

Question by Downunder35m   |  last reply


Q's about Tubes ("JFETs with pilot lights")

Recently I acquired a couple vacuum tubes for $35, and I gave them about 7V filament voltage, and randomly probed around with a 50V 200mA HP lab power supply to see if I can get them to do anything. I found that the most I could get was 40mA between the heated cathode and the closest gate on the pentodes, and a few mA when connected "properly". I guess I just don't have a high enough voltage. :/ I don't want to mess too much with direct mains, and I don't have an isolation transformer. I have a bunch of different tube numbers, although they all look the same to me. (some of them have different inners though!) So my questions are: * Any cool project ideas? I'm thinking FM radio w/ bluetooth tube speaker thing (obviously w/ a separate module) Maybe a nixie display too??? IDK!  * What do I need to know to get started with messing with them? * How do I know if I am pushing them too hard or damaging them? I got the anodes glowing, and the current drops proportionally. Bad? * Most of them are labeled "radio tubes" some probably were in early TVs as well. * How much current/voltage do these things typically require? Can I do any sort of dark tricks to get them to operate well at or under 48V? I know some tubes were special and can run at 12V due to design.

Question by -max-   |  last reply


Schrader Valve use with liquid?

I am working on making a compressed liquid system and i need a valve that can take both a bike pump and have liquid put through it...Can a Schrader Valve take a liquid (clean) and then have the bike pump still attached after?

Question by trf   |  last reply


super cheap, mini valves?

Is it possible to get a TINY, cheap electric valve?  The idea is for a 3D printer that uses a huge array of tiny needles, each of which acts as an extruder, to 3D print stuff in seconds instead of hours.  My question is, could I use a tiny valve over each needle to allow or stop plastic? or would that be impractical/impossible?

Question by jduffy54   |  last reply


water heater popoff valve?

I am trying to replace a popoff valve on my gas water heater, the heater is about 10 yrs old and is leaking at the plastic valve on the top where the water supply comes in. I have found a replacement but not sure how to get the old off and the new on?

Question by kayneed   |  last reply


where do I find in the internet about the Swing-Mark automatic valve for resturants and bars.?

Swing-Mark valve is a automatic flow chemical dispensing mixing valve, that works with the flow of water going through the valve. dispensing detergent and sanitizer chemical to each sink at a pre mix of water and chemical controled by the valve. Depending on the type of metering valve it has. Resturant and bar owners real perfer these valves because they automaticly always have a E P A regulated mixture of sanitizer per water, to wash and sanitize glasses and cups. Or any info on similar valves.    THANK YOU

Question by f1cam   |  last reply


looking for; preassure sensative air valves the size of tire fill valves,? Answered

I need a small valve that will sense low air preassure and fill as required. also looking for similar air valve, but with ability to remotely, (radio) control air preassure.

Question by braadkarma   |  last reply


how to make airgun valve from modded sprinkler valve with tube to blowgun?

Right, im stuck with this one, im in the uk and want to make a copper airgun with a quick fire method, i have chosen the valve on the gun in this instructable: https://www.instructables.com/id/A-15mm-Beginner--Intermediate-Pneumatic-Sniper-Ri/step1/What-thou-shalt-need/ but i have no idea how to makeit from parts in the uk, "air hose" is just not detailed enough, i need to know where to get it. by the way, im choosing to use copper instead of pvc, so i need to know how to attach the valve aswell... thankx 2 every1 its for a science project about laws of motion n i wann impress some ppl

Question by albf1   |  last reply


moray valve and free energy generator?

Does any one know the working of thomas mory valve and his free energy generator that create energy from cosmic ray and can any one know how to replicate his experiment

Question by mihir.sahu.355   |  last reply


Controlling Solenoid Valves from a Computer?

How would I go about controlling a few solenoid valves from a computer? These valves run off of 120v source. I understand the question is vague, but anywhere to start me off would be great. Thanks, Austin

Question by Newman180   |  last reply


I need to make an air valve, but backwards!?!??! I really need help.?

All air valves I see move into the high pressure resevoir to release the air and then a spring pushes it back shut. Is it possible to have the valve set up opposite of that? In this valve the valve would open away from the high pressure resevoir and the air would escape the same way the valve is going. Traditionally, the valve moves into the high pressure and the air moves out the opposite way. Any information would be excessively helpful and I appreciate it in advance!

Question by whiteyg0tgame   |  last reply


How will I be able to switch power from sprinkler valve to sprinkler valve in air cannons?

I want to build an air cannon that uses four sprinkler valves. I want to be able to hit a momentary switch and the first valve will open. Then when I hit the momentary switch again it will open the other valve instead of the first valve. How will I be able to do this without the use of micro controllers?

Question by Pizzapie500   |  last reply


TRigger ideas for a ball valve air cannon

Hey is any one searching for a trigger mechanism for there ball valve operated air cannon well here it is a http://rokclan.com.net.sc then go to my inventions then advanced high powered rifle

Topic by ghostman!!   |  last reply


Whats is the full form of VKD, VDL, VKR in PVC Valves

Whats is the full form of VKD, VDL, VKR in PVC Valves.

Topic by rajkw   |  last reply


can pressure monitoring valves stems in a 2003 Cadillac Seville be replaced with standard valve stems?

Have ongoing problem of pressure stems leaking. have replaced two and they are expensive.

Question by    |  last reply


What kind of valve can I put under the sink in the kitchen to allow electronic shutoff?

 Looking for a good valve that can shut off electronically. I want to connect it to a water sensor, in order to shut off the water in the kitchen in case of a leak.

Question by henktermaat   |  last reply



Make an electric switch from a plumbing valve?

Hi, Does anyone know how I would go about making a simple switch from a plumbing valve? Some examples of what I mean: http://www.etsy.com/listing/78574050/wall-lamp-beer-bottle-plumbing-pipe http://www.etsy.com/listing/114113272/industrial-steampunk-pipe-lamp http://www.etsy.com/listing/109439911/unique-galvanized-pipe-desk-lamp-wclock Thanks in advance, Adam

Question by Adambowker98   |  last reply


Push/Pull solenoid on a switch or a solenoid valve? Answered

Hi, I have an air supply and, thanks to iceng, a rapidly pulstating (variable speed) 12v Dc power. I would like the air supply to allow through a set amount of air each time. I already have a mechanical switch that works perfectly, allowing the exact amount of air through, I need this air switch to be opening and closing as quickly as possible. Would I be better of using a push solenoid and setting it up with the switch or do you think I will obtain faster speeds using a dedicated solenoid valve? I was looking a this solenoid. (or something like it http://www.ebay.co.uk/itm/Solenoid-Push-Pull-Small-/321714577205?hash=item4ae7aedf35) Though i am not sure about the valve version. Any advice/recommended solenoid (valve or push-pull) would be very helpful. Specs: 4mm pipe (ext diameter) 2mm (int diameter) 6 bar (preferably have the solenoids as small as possible) Thanks

Question by Digital Flame   |  last reply


Charging a valve regulated lead acid battery?

A while ago (a few months maybe?) I bought a cheap robot vacuum cleaner from a car boot sale. I decided to take it apart as it was pretty useless as a vacuum cleaner. When I took it apart I kept the battery and the charging plug (wall wart) together. Now I want to use the battery but I am not sure how to connect it to the charger. (I tested the battery and it still works.) The battery is a 6V 2.8Ah valve regulated sealed lead acid battery. On the front of the battery it says it needs a constant voltage charge of 7.25-7.45V and less that 0.84A.  The plug that came with it is a 7.5V 600mA wall wart.  I have a vague recollection of how it was connected up. I remember that there was a diode in the mix. The positive terminal was connected to a switch and then the main control board. The negative terminal connects to the main control board and there is also a small wire that was connected to something else. I would like to know how to connect this up in such a way that is safe for charging the battery?

Question by dracorabbid   |  last reply




I'm looking for a pneumatic solenoid valve of a certain layout and not having much success. Can you suggest one for this

I'm looking for a pneumatic solenoid valve of a certain layout and not having much success, although I am CERTAIN it must exist and by the level of knowledge exhibited around these parts -someone here will know of one! Here we go, I need a really simple "normally open" valve with low current draw, small dimensions, good sealing, -in fact something very much like this type only normally open in design and capable of handing 18psi http://www.allelectronics.com/make-a-store/item/SOL-132/SOLENOID-VALVE/1.html Do you know of a suitable design on sale for my project? Thank you for your constructive input and I hope the answer will help anybody else who is looking for a valve with similar requirements on their project :D

Question by Fingermouse   |  last reply


does anyone know where to get an inexpensive diverter valve, that directs to six or more outputs? Answered

I am working on some experiments with pneumatics, and i'd like to find an inexpensive way to swap one air source to at least six different outputs, with the hope of eventually automating it. i'm dirt poor, so i can't afford to use sprinkler valves for each output, so i was wondering if anyone knew where to find a diverter valve that would do it. Thanks in advance!

Question by cyc4015   |  last reply




How to connect a solenoid valve to my water container? Answered

I have a setup in my mind, consisting of a plastic bottle(filled with water) with a male threaded neck. This bottle is sitting upside-down so the threaded neck is on the bottom. I want to transfer this water to a cup(by freefalling water) through an electrically controlled solenoid valve. The problem is, the plastic bottle I have picked out has a neck outer diameter of 1-1/2 inches, and assuming I want to directly connect the solenoid valve to the neck, I need to get a 1-1/2" diameter valve, which is above $100. Is there any way to connect this container and a valve(still not picked out) without that high a cost? Maybe a reducer of some sort(i looked but cant find any with 1-1/2" diameter on one side)?  Thanks guys, and sorry if the question is kinda weird and simple. For a reference, check this project. https://www.instructables.com/id/Robotic-Drink-Mixer/ What i want to do is similar,but instead of using a pump, I want the water to freefall into the cup.I'd like to eliminate the tubing too.

Question by Chris414   |  last reply


Valve that shuts off once a set pressure is reached?

For something I am in the process of designing, I need a valve that can be connected to a high pressure source and will allow the gas from the high pressure side to to flow into a sealed container on the other side until a pre-set pressure is reached. It should then shut off. The system used to do this should also be able to handle a very high pressure spike (possibly even the type of compressed pressure wave generated during a super-sonic combustion / detonation) on the sealed container side. If you can provide a diagram or the name of a type of valve or even just a description of how this could be done it would be appreciated. No computer controlled stuff please. ##################### The answer I have discovered is to use a regular diaphragm-type pressure regulator. ######################

Question by Jaycub   |  last reply




Looking for help making a simple on/delay/off circuit.I? Answered

I am looking for help making a ( hopefully simple ) circuit to drive an electronic relief valve. What I have is a push button on a linkage and an electronically actuated valve. I'd like a circuit that, when the button is pressed, will supply a 12v output for roughly 500ms immediately after the button is pressed, which will then turn off. The circuit must then remain off while the button remains held, until it is released and hit again.  Linkage open / Valve closed > Linkage closed / Button pressed > Valve open 500ms > Valve closed / linkage remains closed > Repeat The system is for a turbocharged diesel engine. When the throttle is snapped shut, the boost pressure has nowhere to go. It tries to run back out the compressor housing. This results in a forceful drop in turbine RPM, and in extreme cases even completely stalling the turbine ( and blowing it to pieces ) I intend to vent this pressure back pre-turbo via a 2 inch valve. The short delay upon closing the throttle with this size of valve should be more than adequate. I also intend on wiring a boost pressure switch to disengage this circuit below 15psi. The turbo's anti-surge housing is effective at the lower pressure. Any help with the circuit would be GREATLY appreciated! 

Question by jacob5680   |  last reply


Need regulator and compact solenoid 5/2 valve for small scale Co2 powered system.

Looking to drive a 5/16ths inch pneumatic cylinder all in a self contained package. Cylinder is rated for 150 psi and the 12 gram co2 i was planning to use is 900 psi so i need to reduce it considerably. I'm trying to make a moving costume piece, not a battlebots weapon or a bomb.

Question by Chirishman   |  last reply


What do i need to control a sprinkler valve (24V solenoid) with an arduino?

I need to know what parts to get to open and close an electric sprinkler valve with my arduino. It's supposed to use 24V but I've heard that 9V works just as well. I tried using a 2n3904 as a switch with a 9V battery and it turns on but won't turn off unless I disconnect it. Since it's a solonoid (inductive load), I assume I'll need some sort of protection diode and noise-canceling capacitor. Would a MOSFET be best to control it with 5v output from an arduino? What models for these components would be best (and can be bought at radio shack)? Thank you!

Question by Vick Jr   |  last reply


How to make a pressure gauge with a cut off valve for an air filled seat cushion? Gauge suppliers?

I need a pressure gauge to take the guesswork out of filling a seat cushion to the proper level.  The pump is a push/pull pump that inflates on either stroke and has a rubber connector that just slips over the fill valve for the cushion that unscrews.  It's a matter of comfort/stability/safety, where under/over inflation can impact the safety. currently it is done by "how does it feel" and physically feeling the firmness.  Both of them are subjective and can be wrong.  This is the reason for the gauge which would only vary in conjunction with the weight of the person sitting on it and air temp(altitude on rare instances). Thanks, Erich

Question by houdini65   |  last reply


is it possible to use a chamber capable of firing multiple shots before having to re-fill?

Is it possible to use a chamber capable of firing multiple shots before having to re-fill? cause the way i picture it you could use an attachment to the chamber connecting a independent pressure valve which in turn would be connected to the air tank. the fact that its self regulating would spare you having to fill up the chamber with the turn of a valve after each shot...but even so I'd need a independent pressure valve/regulator (small enough) that would shut the airflow at 100psi. and i prefer the pvc not blow up on me. i'd really like to try it but how and where could i find that type of valve that works similar to scuba equipment??

Question by DIYtheKid   |  last reply


Quick Release Piston Blowback?

I have put a great deal of money into constructing a 6" air launcher, but to my dismay things didn't quite go as planned with the valve design.  I have attached a picture below of the valve's design.  The idea is that when the air is released from behind the piston, the piston should move back allowing air to exit through the 5" pipe.  The valve successfully holds pressure, but fails to fly back and I believe this is a result of the piston and barrel it is up against being equal in size.  I wouldn't have designed this in this way, but the large schedule 80 pvc tee only allows 1/4 inch around the sides of the piston at best.  I am curious if anyone has any ideas to make this piston valve work, I really don't want to pay 200 dollars to get a butterfly valve on it and would greatly appreciate any ideas that may make this work.  I promise videos of the beast once I get it up and running.  Launching 6" objects using up to 80psi will be a blast, literally if I ever get crazy enough to bring it up that high.  

Question by jj.inc   |  last reply


Do we need another cannon

So After toying with the Idea of making a large and powerful cannon without making a piston valve I do believe I have an answer to the problems associated with using ball valve (bad for power) and piston ported valves (too much effort) I think I've found a simple way of making this work, only question is, with gas power and pneumatics galore do we need another? It would be in the same sort of category as the behemoth but a simpler build, what does everyone think?

Topic by killerjackalope   |  last reply


Powering a 24 Volt sensor with an arduino? Answered

Hello!   Ok here is the issue. Right now I am designing a rain water collection system by having my down spout drain into a 55 gallon plastic drum. I want to cap the drum to avoid spillage. The problem is what happens when the drum is full and the rain is still coming in. I know there are plenty of mechanical ways to solve this problem but I wanna have fun with an Arduino I have laying around. What I am thinking is run a pipe out of the bottom that has an irrigation valve installed (for anyone who is reading that that isn't aware of what an irrigation valve is, it is and inexpensive solenoid valve that is used for unground sprinkler systems). I figure I will add a water level sensor to the inside of the barrel and then hook the sensor and valve together via my Arduino. From there type a little code and violaa I have an over fill protection device! Here is the problem: An irrigation valve is 24v and the Arduino is 6volts. I know I can get the 24 volts from a power supply down to 6volts via resister, but then how would power the valve? My goal is to NOT have to buy a 12volt 1" solenoid (i didn't want to spend a lot of money on this project). I am not sure if there is a solution to this problem, but being a very green/inexperienced electronics hobbyist figured could hurt to ask. Thanks

Question by Mpc1055   |  last reply


Need a controller (or program) for low voltage solenoid valves, programmable to have a station stay on for days @ a time

I have 16 solenoids that need controlling to open air valves in sequence that create bubbles in a fountain that simulate moon phases.  Would like something that is stand alone hardware over a program that would require a computer to be on 24/7. 

Question by Brent Owen   |  last reply


IC ENGINES?

I was thinking that what will happen if we arrange inlet & exhaust valves on the piston (spark plug remaining on cylinder head)? i think that may be by using metal foam on the cylinder head the knocking of the engine might decrease. please assume that somehow i use proper mechanisms for valve timing & they dont have any appreciable effect on the piston. just consider that the weight of the valves is added to the piston. i was wondering that this might increase the efficiency of the engine because suction will take place more slowly (so it will near a reversible process, so efficiency will increase) & force of the explosion will be better. please you ppl; if anybody can give me satisfactorily explanatory answers, do reply! :)

Question by coepian   |  last reply


valve idea wanted for for a automatic top up on a small low pressure boiler

Hi Can anyone sugest a way for me to automacily top up a boiler as the level drops whilst generating low preasure steam. I am building a small boiler steam generator for a sauna, my problem is that the boiler needs to be small and portable for backpacking and treking so therefore may only hold a couple of litres of water, the small tent style sauna will demand more than this. the boiler may be something simple like a kettle with a pipe attached to carry the steam into the sauna, but whilst taking a sauna i do not want to have to keep topping up the boiler, i have a constant heat source so no problems there. i also have a collapsable fold up plastic water carrier which i can suspend above the boiler as a reservoir but will need some sort of valve that allow the boiler to top up automaticlly. hope that all makes sense. thanks in anticipation. robert

Topic by robertuk444   |  last reply


Solenoid Valve Question:Power supply for a VERSA VSG-3521-U-D024?

I found a set of versas VSG 3521 and I cant seem to find the correct way to power them up in a circuit. From what I know they need 24V dc and 9.5 watts. I calculated that they need .395 amps is that right? Does anyone have any suggestions for a circuit that incorporates them, a power supply and a switch? Thanks for all your help!!!!!

Question by amantux 


Beer...how do I convert pressure to flow to determine ounces over time? Answered

How do I convert beer. How do I convert pressure to ounces. If I know my pressure at the valve is 20 psi with beer running through 3/16 inch tube how do I convert the flow to ounces say over 10 seconds when I open the valve? Would love some help. thanks

Question by Cosmoo    |  last reply


Yamaha ttr 225 question

I have a really stupid question. Which way is on for the gas valve? I just got one and have no clue which way is on.

Question by jims1100   |  last reply


how can i control the airflow coming from my airpump for a brine shrimp hatchery?

I think i want to make a valve of some type on the tubing itself. i have an airpump that doesnt come with any flow control, i put a tube on that and an airstone at the end, but my "aquarium" is really small (gallon and a half, tops) and the bubbles are causing havoc. I need to be able to divert some of the air somewhere along the tube. any help would be appreciated.

Question by parker92   |  last reply


how to find torque of a rotating actuator shaft..

Am doing a project on developing a instrument helps finding the torque value of a actuators rotating shaft before fitting it to the valve ....

Question by prithiv   |  last reply