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valve

I have a leaking main valve and am wondering what the knob on the side does and if it can stop it from leaking.

Topic by ploop171    |  last reply


electric valve

Where do i buy pilot assisted diaphragm valve used on mythbusters.    it was used in the deadly straw episode. at 3:42 to 4:06 on the youtube video called ;MythBusters Season 4 Episode 18 part 1 .  I want the exact size and brand valve.

Topic by m5industriesinc    |  last reply


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


piston valve? Answered

What is a piston valve and where i can get it ?

Question by copper tube    |  last reply


Valve question

Hi all ... my first post is actually a question. I have been searching for the name of a specific type of valve. More specifically the name of the valve in a refillable butane lighter (the intake valve). The little brass valve that is usually at the bottom. I need something similar for a proeject I am working on but after looking for a while I have yet even to come up with a specific name for it. Also, if somebody could tell me where I could find some (doesn't have to be brass - as long as it is metal) ... I need about 20 minimum to begin with. Thank you very much, Iza Bl..

Topic by izablue    |  last reply


sprinkler valve and blow gun valve? Answered

Hello i am planing on making an air gun, but Im a little confused. my first question is that what is the best type of sprinkler valve to use (brand and size)? my barrel is 1/2" and air chamber is 1'. My second question is do they make a battery operated sprinkler valve, so i can just hook a electronic switch to it? if so what brand? my third is why is the blow gun valve necessary? thank you those who post answers.

Question by CaseBoy    |  last reply


Nerf Gun Valve? (Air, Need a valve)

Yea. Basically, I'm trying to make a nerf rifle with a better trigger. I've used ball valves in the past, but those let out the air way too slow, and you jerk when you pull that.  So I need some kind of valve that can be pulled, and is airtight. Also, I'm not so good at this whole construction thing, so the easier, and the cheaper the better. Home Depot is probably where I'll be picking up the materials from... so yeah.

Topic by Batryn    |  last reply


Is there a tutorial for a piston valve or a quick exhaust valve? Answered

 Does anybody have or know a tutorial to make a piston or quick exhaust valve for a pneumatic device

Question by 1337f0x    |  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


Valve/Tube Amps

Hi, I am currently designing a stereo/mp3 amp for my education and I was wondering... Is it possible to incorporate a Valve/tube into a conventional stereo circuit? (like a standard valve amp but smaller and without the Equalization effects) I suppose the Valve/tube watts would have to match the speakers, but is this possible or would I have to use a circuit from a guitar amp that is already paired with a valve/tube amp system?! Much appreciated. -Rob

Topic by RobertChallingsworth  


leak in air valve?

How do you repair leak in air valve on inflatable pools

Question  


Gas Inlet valves

Hey guys and girls, I am after a supplier for gas inlet valves, or a standard or anything... Basically I have a laser tag system that I want to add high pressure air recoil to, but I want the air supply in a removable magazine, that will then connect to the gun and go through a blow back valve once the trigger is pulled etc. Now, the problem I have is the connection between the magazine and the gun, to allow the gas to flow through, I know airsoft guns have recoil magazines that they can use, (Im in Australia, so i don't have access to these). But would really like to know where I can get some of the parts from. Or designs maybe.

Topic by TrevorB42  


CO2 valve question? Answered

Hi ... I would like to ask for your opinion about my idea : I got as a present a CO2 airsoft pistol. Unfortunately it's too powerful for the UK airsoft norms. So I would like to make it weaker. I took the magazine apart and I had a look at the valve. I find out, that the moving part in the valve (that release the CO2 from cartridge to the gun) is able to move cca 2mm. Now my question is : If I would limit the movement with "something" so that the moving part woudl move only 0.5-1mm ... would this make the gun weaker ??? Thank you for your opinion or any suggestions.

Question by zholy    |  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


valves manufacturer and exporter

Http://www.jochvalve.comZhongquan Group Valve Co., Ltd. mainly manufactures the valves with such standards as American ANSI/API, Japanese JIS, German DIN and Chinese GB. It’s main products including Gate Valve, Globe Valve, Check Valve, Ball Valve, Butterfly Valve, etc. The size ranges from DN15 to DN1050. The pressure ranges from Class 150 to Class 2500. And the main materials of the products are WCB, WCC, WC6, WC9, CF8, CF8M, CF3, CF3M, LCB, A105, etc. We can produce according to the clients’ special requirements. The products are widely applied to the field of petroleum, chemical, metallurgical, power, fuel gas, city pipeline networks and so on. Our products are exported to Southeast Asia, Europe, Unite States, Middle East and other countries. With high content of technology and reliable quality, our products enjoy a good reputation. Zhongquan Group Valve Co., Ltd. mainly manufactures the valves with such standards as American ANSI/API, Japanese JIS, German DIN and Chinese GB. It’s main products including Gate Valve, Globe Valve, Check Valve, Ball Valve, Butterfly Valve, etc. The size ranges from DN15 to DN1050. The pressure ranges from Class 150 to Class 2500. And the main materials of the products are WCB, WCC, WC6, WC9, CF8, CF8M, CF3, CF3M, LCB, A105, etc. We can produce according to the clients’ special requirements. The products are widely applied to the field of petroleum, chemical, metallurgical, power, fuel gas, city pipeline networks and so on. Our products are exported to Southeast Asia, Europe, Unite States, Middle East and other countries. With high content of technology and reliable quality, our products enjoy a good reputation.

Topic by jochvalve  


What is a Solenoid Valve?

This Design Squad Nation animation shows how an electric current flowing in a coil produces a magnetic field. Explains how a solenoid uses a changing magnetic field to move a rod back and forth to do mechanical work, such as opening and closing a valve. For more Design Squad Nation visit our website.

Topic by designsquad  


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


Cheap Solenoid valve (or other electronically actuated valve) sources?

...i'm needing to find a good source for cheap electronically actuated valves (for liquid mainly)...i've found a few solenoid type valves through random google searches...but they're all pretty expensive....i can get just solenoids for under $2 from most places...but they're just the solenoids...and well...i'm not sure how to turn one of those into a valve assembly if anyones got some good sources for either solenoid valves or other electronically actuated valves (i've seen some people use ice maker valves for this...but those things are $20 and up...too rich for my blood)

Topic by crapflinger    |  last reply


Water valve on/off control

Need some help! I need to know what to buy. I need to control water flow with an electric water valve to open when the water temp reaches 65 degrees and shut off at 55 degrees. From the valve, thermometer, etc., what do I need to buy and how can I wire it? I know it’s the same concept as a HAVAC thermostat in your home, but I don’t know how to wire it to a relay for the valve.

Topic by opc167  


safety valve bbq propane

I understand the pressure relief valve. I understand the float valve which prevents overfilling. But is there any mechanism to prevent liquid propane from leaking if the tank tips?

Topic by Toga_Dan    |  last reply


Bike Tire Valve Lights

Anyone know how to build a Bike Tire Valve Light? The ones in stores strobe, waterproof, and only activate during movement. Thanks

Topic by kmurray24    |  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


Lego pneumatic electric valves?

Hey all. I was just wondering, I want to use the lego pneumatic parts like i would for the fischertechnik ones. And I was wondering if anyone know where i could buy an electric solenoid valve approapriate for the lego pneumatic tumes and pressures. 10-50 psi. or so. OR, if i cant find valves for the lego, where could i get a fischertechnik kit that had EVERYTHING needed including the electronics, motors, sensors, solenoids, tubes, wires, and everything else.

Question by sci4me    |  last reply


Cheap air valves or solenoids?

I'm planning on building an unconventional pipe organ, but I am having trouble finding good cheap air valves that I can buy 60 of to complete an entire manual (keyboard). Normally, a classic organ would use mechanical linkages to a sort of air switchboard, but I have neither the time nor the inclination to build that kind of system (and I want everything to be physically robust and portable, for traveling and abuse during performances. Plus my pipes are very weird ones, and almost all of them would have to be offset anyway, so air tubes would be involved at some point no matter what.) So I'd prefer to have air lines going to each key, with a valve, and then the air lines continue to a much simpler switchboard, so that no pulleys or levers need to be involved. The valves can be electric (keys can easily connect a circuit instead of letting air through), or mechanical (pressing the key opens the valve), and my budget is about 2 dollars or less per valve. Any ideas or links? Homemade plans are welcome too, if you have a method that would be easy to mass produce and not cause leakage. Some of the lower notes may require higher airflow/larger valves too, so a solution that is scalable is preferred.

Topic by smurfsahoy  


Delay Power To a Solenoid Valve

I am making a pneumatic cannon with a solenoid valve which is turned on by a switch. However, I am wondering how I could delay the switch. So, when I flick the switch the cannon doesn't instantly fire, instead it would be delayed by maybe a half a second or so for effect. Would I use a 555 timer? I'm really new to this, so could you tell me how I would go about doing this? Thanks Guys

Topic by Make me a SANDWICH    |  last reply


Satellite to Radio to Pneumatic Valve

I want to receive some sort of satellite signal with a radio and then use the data I receive to control a pneumatic system to replicate a heart beating. I have been talking around with some people who know a bit about radios and the such but haven't gotten much conclusive help.  I would like to build as much of this as I can myself, the entire radio and everything, though I only have about a month to do it. A DIY radio kit paired with an Arduino might be the answer due to time restraints.  What i've learned so far is that I probably want it to be a tunable AM radio. Whether or not I should build that myself from scratch, build a DIY kit, or just purchase one, I am not sure. How to then interface that into a system to then control a pneumatic system, I have no idea other than the obvious arduino. Lastly, I don't need any special signal from the satellite. I really just need to receive a voltage from the radio. Though, hooking into a satellite with an onboard atomic clock so that i can then display the time as well would be great. I am going to keep doing research, though if anyone here can lend a helping hand I would be very appreciative!

Topic by dlandry2    |  last reply


Question about sprinkler valves? Answered

I'm planning on making a potato cannon, however I want to make it be able shoot multiple times with one tank. If I make the firing valve a pneumatically powered sprinkler valve, will it have to empty the entire air tank before it can close? Or can I just release the trigger and have the valve close with still some air in the tank? I'm already going to have a 2 tank design with a firing tank and a primary air tank.

Question by General Eggs    |  last reply


PreSsure rating ball valve

On one side, the valve says 600 WOG That's "600psi water, oil, gas" On the other side 1/2 psig That's 1/2 psi gas Which side to believe?

Question by Toga_Dan    |  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


Looking for a Sugar Dispenser or valve

Im looking for a dispenser or valve that can start and stop the flow of sugar. Please post any suggestions, I'm trying to build something and this final piece has been by far the most difficult to find.

Topic by Blaisebuilding    |  last reply


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

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  


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



Blowgun valves and where to buy them

Where do you buy blowgun valves? I need one for a airsoft machine gun i am making as i can't make it without one. please help me.

Topic by DELETED_inventor    |  last reply


Looking for a 5V valve to be driven by ARDUINO

Hi everybody, I am working on a project to make an automatic watering system driven by arduino. I am looking for a valve which I could operate without any extra power supply but the 5V from the ARDUINO. It would be perfect if the valve could be in the range of the 6mm for tubes connections. As my project will rely on gravity for water movements, I don't want to use a pump or whatever active device. Just some standard batteries connected to ARDUINO. Do some of you know such a valve? I have looked on the net without any success. I have found loads of watering projects using arduino but none with the same phylosphy. If you know one, please let me know. Regards,

Topic by BaptisteL8    |  last reply


Looking for a particular type of air valve

So 2 parts to this question, one is what would it be called, the other, where would I find it. I am looking for a valve  that would have 3 stems, for lack of a better term.  One one end would be the source, another the output and the last would alternate between pulling from the source and pushing to the output.   Any Googling tips?  Not looking for anything industrial, simple small plastic valve would suffice.

Topic by phdearthworm    |  last reply


Using sprinkler valves for pneumatic cannons

Many people have used sprinkler valves for a dump valve to release the air. I have made a launcher that used one of these and when I hook the air up it releases it all before I can hit the switch causing a pre-mature fire. Does anyone have these problems. I think it can be fixed by adding the air in slowly rather than hooking up a quick connect coupling like I am now.  Any help would be appreciated. 

Topic by rocketman20    |  last reply


How to limit the electromagnetic valve current?

I know that the current is given by the voltage divided by the resistance.The resistance of the coil in the solenoid valve should be very small.In that case, if the voltage is applied directly, will the current be very large? For example, the voltage of 12V, the coil resistance of the solenoid valve is 1 ohm, is the current of this solenoid valve 12A? I wanted to build a simple model similar to a single-cylinder diesel engine, with solenoid valves to simulate piston motion and provide a compression resistance and push out power.

Question by Ableson    |  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


VALVE NOISE AFTER ENGINE REBUILD

I just finished rebuilding my Audi 80, 1.8 engine in which I removed the Valves, removed all stuck carbon, watch with petrol and reset in orderBut when I started the engine, I noticed unwanted noise from the cylinder. I hate this noise from the valve, please what can I do again?

Question by degosh    |  last reply


Need piston valved gun experts

I just built a big piston valved spud gun. I can't get it to fire. When I release the pilot valve no air even comes out. The piston is sealing though. I think it might be theres not enough air in it. I charge it using a 1.5 gallon compressor at 100 psi. The chamber is 5 foot of 3 inch tubing. I don't know why no air even comes out of the pilot valve. I know their isn't leaks or none big enough to hear.

Topic by thejrb    |  last reply


Huge ball valves, worth to refurbish?

I have now already two of these huge ball valves we have on a machine at work.Soon I will have one or two more...The replacements always cost well in excess of $500, just for the part, excluding labour.If I am correct than even these big guys can be dismantled like their small cousins.Screw the screwed side open, remove the turning mechanism and them push the actual valve out.Please correct me if that might be different!The actual problem with ours is that after a few years of 24/7 use they start to leak through - not out in anyway.A visual inspection without taking them apart show build up on the ball part.No scratch marks or other damages that I can see.Where there is no build up it is shiny like a mirror.The seal are blue and clearly show the same abuse as the ball.I tried with some aluminium poking tool I made up and the debris is really hard and baked on onto these seal rings.My assumption is that only the seals started to fail.And as they are consumables I am starting to wonder if it is worth trying to find replacements and to clean up the valve after taking it apart.With only a manufacturer (from the machine, not the valve) part number but no markings or anthing on the valve itself I struggle to find any online place to check for genuine rebuild kits :(Any links for sites with lots of balls valves pictures (to be motorised) so I might one that looks identical?Last but not least: How to unscrew the damn thing?? LOLI tried in a vice with the largest set of plumbing pliers I could boorow but it won't budge at all.Would need an about 48mm spanner to grab the "nut" part of the valve.The pliers are almost a meter long but even swearing like the worst guy in town did not help to make anything move.Before cutting a custom made spanner from some re-inforcing steel plates: Is there any proper way of unscrewing a big ball valve?

Question by Downunder35m    |  last reply


How to make a balanced spool valve? For a PVC airgun, need quick release valves.

I'm trying to make a 50 caliber airgun, but this time with a better valve. My previous one had a ball valve, and it's sticky, hard to aim, and just troublesome. I did a bit of research on airgun valves, and it seems as though the balanced spool valve is a good one to try. However, all the searches seem to be focused on the discussion, not the making of the valve. I'm going to be using PVC, hopefully 3/4"+ for the air chamber. Anyone know how, or know a better valve? Thanks! 

Question by Batryn    |  last reply


Wanted: non-electric water level valve

We have a small water-fountain that needs topping-off.I want a valve to allow a 1/4" soaker hose to dribble water until it reaches a set levelI've seen larger versions, but I want to make one that will fit inside a small fountain. I don't even know the hydraulic principle that can do this.Please advise

Question by richardhaven    |  last reply


one way air valves (like on a football,basketball etc)

Looking for valves see photo (ok don't uploader not working) Well a valve that you stick an inflator needle into like on a soccer ball, basket ball etc. Need 12-50 or so. Anyone have a source? I've searched but no luck, it might be I just haven't phrased it right but... TIA Danneauxs

Topic by danneauxs    |  last reply


Why is the ball valve of my potato gun releasing the pressure? Answered

The ball valve of my air cannon releases the pressure once it climbs above 5 psi. Is there any way to fix this? Or am I stuck with a $30 door stop I'd buy a new one but it just started to leak air, it was working, plus it's glued to my U joint, and really don't wanna rebuild it.

Question by monkhm    |  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