Something about BACOENG Solenoid Valve
Last updated 4/23/2018, Torr. Update content is marked in red.
This article answers the following questions:
- 1. What is a solenoid valve?
- 2. How does a solenoid valve work?
- 3. How many types of solenoid valves does BACOENG offer?
- 4. How can I choose the right solenoid valve?
- 5. How do I read the solenoid valve quotation?
- 6. What are our top-selling valves?
- 7. What should I look for before and during installation?
- 8. Troubleshooting
- 8.1 Solenoid valve doesn't work even after I turn the power on
- 8.2 Can't close the solenoid valve
- 8.3 Liquid changes color or consistency when using the valve
- 8.4 Why is my valve leaking?
- 8.5 Why is my valve so loud?
- 8.6 I hear coil move when power on, but it seems the voltage or current is too small to start/open the valve? (Voltage is correct)
- 9. FAQ for different valves(How Electric Current Changes During Operation Updated)
- 10. Installation diagram/Wiring Diagram/User manual
BEFORE BUYING YOUR BACOENG SOLENOID VALVE:
If you are looking for solenoid valves without any modifications and need to receive it as soon as possible, head to Question #7 and check out our top-selling valves. Our top-sellers are always in inventory, and we can ship and deliver within 3-5 business days in the continental United States. If you need a specific model or modifications to your valve, please allow two weeks for shipping and delivery. We offer a wide array of solenoid valves (see Question #4) to meet your needs. If you have OEM requirements, please contact us.
1) What's solenoid valve?
A solenoid valve is an electromechanically operated valve. The valve is controlled by an electric current through a solenoid: in the case of a two-port valve the flow is switched on or off; in the case of a three-port valve, the outflow is switched between the two outlet ports. Multiple solenoid valves can be placed together on a manifold.
Solenoid valves are the most frequently used control elements in fluidics. Their tasks are to shut off, release, dose, distribute or mix fluids. They are found in many application areas. Solenoids offer fast and safe switching, high reliability, long service life, good medium compatibility of the materials used, low control power and compact design.
There are many valve design variations. Ordinary valves can have many ports and fluid paths. A 2-way valve, for example, has 2 ports; if the valve is open, then the two ports are connected and fluid may flow between the ports; if the valve is closed, then ports are isolated. If the valve is open when the solenoid is not energized, then the valve is termed normally open (N.O.). Similarly, if the valve is closed when the solenoid is not energized, then the valve is termed normally closed.
Solenoid valves are used in fluid power pneumatic and hydraulic systems, to control cylinders, fluid power motors or larger industrial valves. Automatic irrigation sprinkler systems also use solenoid valves with an automatic controller. Domestic washing machines and dishwashers use solenoid valves to control water entry into the machine. Solenoid valves are used in the paintball industry, solenoid valves are usually referred to simply as "solenoids." They are commonly used to control a larger valve used to control the propellant. In addition to this, these valves are now being used in household water purifiers.
Solenoid valves are used for a wide array of industrial applications, including general on-off controls, calibration tests, pilot plant control loops, process control systems, and various original equipment and manufacturer applications
2) How does a solenoid valve work?
Check out this video to see how solenoid valves work: CLICK HERE
This diagram also illustrates how solenoid valves work:
3) How many types of solenoid valve does BACOENG offer?
We offer the following valve models:
- NO/NC series
- Energy-saving series
- Gas series
- Anti-corrosion series
- Steam series valves
- Underwater series
Our valves come in either brass or stainless steel, and we carry sizes DN6, DN8, DN 10, DN15, DN20, DN25, DN32, DN40, and DN50 sizes. We also provide a wide range of voltages: DC 12/24V, AC 12/24/110/220/380V.
4) How can I choose the right solenoid valve?
These three steps will help you choose the right solenoid valves:
- 1. Confirm them job you are using the valve for.
- 2. Check the voltage and pipe size of your job materials, and find the valve that matches.
3. Do you need your valve to operate during power outages? This will effect what type of valve you need.
General product parameters:
1.Suitable Media:Air Water Oil .
2.Operation Mode:Normally Closed (Opens when powered)
5.Fluid Temperature: -5-80 Degrees Celsius / 23F to 176F
6.Operating Viscosity: Under 20CST
7.Valve Type:Direct Acting, Wet Armature. Semi-Direct lift valve. Suitable for gravity feed.
8.Installation: Fluid direction should be as the arrow shows .
9.Versatile, small, responsive, light and durable.
10. One year warranty. Contact us
5) How do I read the solenoid valve quotation?
This video breaks down how to properly read the solenoid valve quotations: CLICK HERE
6) What are our top-selling selection?
CLICK HERE to see our long list of top-sellers!
7) What should I look for before and during installation?
- Before installing your valve, please refer to the product's instruction manual to make sure it meet your requirements.
- Be sure to clean and rinse piping before installing new valves.
- When installing, follow the direction of the arrows on the valve to insure you are installing it correctly. The valve must be installed in horizontal pipe runs and solenoid valve coil keep in a vertical position. Some valves can be installed at different angles, but keeping it vertical will extend the life of your valve.
- Once installed and the electromagnetic coil lead wire is connected, make sure the wiring is firm. The wire contacts should not jitter or shake. Loose connections will cause your solenoid valve to malfunction.
If you experience any problems during installation, contact our customer service.
8.1 My solenoid valve doesn't work even after I turn the power on.
Check the power wiring. Is coil connected? Is it stable? Refer to the solenoid valve user manual to insure that you are using the proper voltage for the installed valve. If coil is loose, remove the valve and re-install at the correct angle.
You may have experienced a coil short circuit. If coil short-circuited, or if coil is burnt or bent, replace coil.
The valve and piping may also be dirty, which can affect the performance. Take the valve apart and rinse the pieces before rebuilding.
This may cause the valve can't open normally. Cleaning method is as follows in"Leakage"
If you use your solenoid valve regularly, or pass a lot of viscous liquid through your valves on a regular basis, you may need to replace your valve. It’s important to change your solenoid valve regularly to maintain performance.
8.2 I can't close the solenoid valve/Solenoid valve can't be closed tightly
Extended use can wear down the spring that opens and closes the valve. It’s important to replace your valves regularly. If you’ve been using your valve for a while, you may have to replace the spring, the seal, or the entire valve.
You will have to replace the valve if the temperature or viscosity of your fluid is higher than your valve can handle. Refer to the solenoid valve user manual to match valves with their proper working temperatures.
Impurities can also effect the performance of the valve and valve catch springs. Uninstall the valve and clean it and the springs thoroughly before putting it back together.
If the throttle hole is blocked, your solenoid valve won’t close. Clean the valve regularly to avoid blockages.
Professional inspection：You may need to replace just the seal if your valve is not closing. If the main spool or iron core seal is damaged
8.3 The liquid changes color or consistency when using the valve.
Oil oxidation can cause rust and other carbon particles to build up. Other debris such as dust and dirt can build up too if you haven't used the valve or pipes for a while. Try running water through the valve to clear any buildup before using again.
Rust can get in the tubes and turn water brown. Run water through pipes and valves until water runs clear. Clean pipes and valves regularly to avoid rust buildup.
After steam is used, condensation will build up around the pipes and the valves. Clean any condensation off with a dry towel before running again.
8.4 Why is my valve leaking?
Check if the seal is damaged and whether the link is loose. Replace any damaged pieces to stop leak. If leak persists, the exhaust hole on the diaphragm could be blocked. Follow the steps in these photos to fix the problem:
8.5 Why is my valve so loud?
Solenoid valves are not louder than 50 decibels. If it is louder or making strange sounds, check your voltage and adjust accordingly to minimize noise. Refer to the solenoid valve user manual to match valves with their proper voltages.
If your firmware or valve is loose, tighten it.
Debris can also cause noise fluctuations. Clean valve and equipment regularly to remove dust, dirt, rust, and metal debris and reduce static noise.
The iron surface of your valve may be uneven or have natural impurities that can cause dust and debris to accumulate in certain areas. Keep your valves clean by maintaining them regularly and replacing them as needed in order to cut out any loud sounds.
8.6 I hear coil move when power on, but it seems the voltage or current is too small to start/open the valve? (Voltage is correct).
Through our test, for 12V and 24V NC solenoid valves,they can work normally under the water pressure of 9 Bar, if we use AC to DC power adapter as supply. Because adapter provides a stable voltage. But if I replace it with battery, it may not open due to lower voltage/current. When you finds that your valve can't open, please measure the system voltage and current. Or replace to adapter as power supply, that would work. You can choose to return or exchange the old one if you don't want to use AC-DC adapters.
9) Other questions that customers are most interested in
1) NO/NC solenoid valves
I didn't see +/- labeled on the terminals. Does it matter which way it is hooked up?
Answer: No, it doesn't matter
How much is the valve response time?
Answer: I assume you mean the time to open from the point of current is applied. It's near instant.
Is this food safe product ? Can it be used with hot drinking water?
Answer: Our stainless steel valves are food grade, and they work with 0-80C.
* Does this unit get hot if it is energized for long periods of time thus increasing the water temperature flowing through it?
Answer: All electrical magnetic coils will generate heat to some degree. And this valve is not meant to be on 24/7. Actuation period should not be longer than 8 hours at a time. Running this valve for longer periods of time will cause it to burn out quickly. This valve will last for a long time if properly used. It is a very sturdy and reliable solenoid. It does get warm but like the other comment, you should not notice a difference in the liquid temperature
Generally, power on for 15mins, the coil is 40-50℃. Continue to half an hour, the temperature reached 70℃, it's normal phenomenon. But it can't keep working more than 2 hours. It need to stop to let the coil cool down. If you have to keep it working for long time, we recommend you to buy energy-saving or normally open solenoid valve.
Could the solenoid handle being activated for 24 hours, off for a few days to a week then activated for another long period?
Answer: Of course. it is NC, it is activated(NO) when connect to 12VDC
I need a valve to work with 40-60 psi and 130 degree water, does this valve fall in this range?
Answer: I use mine for 150psi air. 130 degrees should not bother the valve
Error with the Solenoid valve medium viscosity instructions unit? What is the viscosity of water, gasoline, syrup, etc.
Answer: Generally water, diesel, air viscosity less than 20CST, syrup is too sticky to work.
There are a small amount of particles in the media impurities, what kind of solenoid valve should I choose?
Answer: General solenoid valve requires no particles of media impurities, I think you need motorized ball valve.
Is this safe for drinking water?
Answer: NBR (nitrile rubber) seals and gaskets have been used for decades and are approved for potable water. However, for those who want better, it's going to cost you
Question: Any idea if I can use this for a air horn? Could I wire this up to a switch and use that to blow the horn?
Answer: That's exactly what I'm using them for. I got 3 on top of my tank. Train horns, air into the rear axle bags and air out of the bags. They work great.
Question: could you power this with arduino?
Answer: Not directly. Arduino outputs 5v max (some are 3.3v) this component requires 12v. You would need a 12v power source and a transistor or relay that could be activated by the arduino.
* Valve does not open reliably it will fail to open randomly? The switch doesn't work properly?
Turn on and then cut off the power supply several times in a short time. To make the magnetic return to normal.
* How ELECTRIC CURRENT CHANGES during operation(only for DC 12V NC Solenoid Valve)
Start current(The current in the opening process) is around 6A, and hold current is 3A.
What is the nut on top of the solenoid for?
It holds the solenoid together. The black piece is an electromagnetic which attaches to the valve.
Does it have a lot of flow?
Yes I use it for Automated watering my garden
Question: Does this valve work if the pressure in the line is at atmospheric pressure or very low pressure, is the valve pressure assisted?
It's electric, if there's no pressure, I'll still open and close
2) VITON gasket solenoid
Can you use this valve for fuel gas - ie. natural gas? I see propane listed.
Answer: Yes and be sure that you choose VITON gasket!
10) Solenoid valve wiring diagram and user manual
USER MANUAL SEE ATTACHMENT