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-NEW- Solenoid Valve 1/4" Normally Closed (N.C.) 12VDC Nylon (NEW Improved Crack-resistant Polymer) Blue Cap by U.S. Solid
-NEW- Solenoid Valve 1/4" Normally Closed (N.C.) 12VDC Nylon (NEW Improved Crack-resistant Polymer) Blue Cap by U.S. Solid
U.S. Solid normally closed (N/C) electric solenoid valve is constructed with a durable , Nylon plastic body, two-way inlet and outlet ports with one quarter inch (1/4") female threaded (NPT) connections, and resilient NBR gasket.The direct current coil energizes at 12 volts DC;voltage range +- 10%. 4.8 Watt power rating.
Direct lift valve operates from 0 PSI to a maximum pressure of 145 PSI (0 MPa to 1.0 MPa). Operational pressure range for water: 0 to 101 PSI; for oil: 0 to 72 PSI; for air or gases: 0 to 101 PSI. (2.5 mm) flow aperture permits a unidirectional flow capacity of 0.23 gallons per minute (GPM) of water at 60°F with a pressure drop of 1 PSI (0.23 Cv).
Operational temperature range (steady state) Can operate appropriately in ambient temperatures of -5° to 80° Celsius (23° to 176°F) . This valve is suitable for outdoor use; not for use underwater.
Suitable for use with hot or cold water, gas, air, and very low viscosity fluids (< 20 cst). NOT designed for use with gasoline or organic solvents. Valve is not intended to be energized continuously for more than 8 hours. This can lead to burnout of the coil, and malfunctioning of the valve. In cases where this is necessary, it is recommended that the user install a computer fan to keep valve cool.
Manufactured in China. Model: USS2-00005. Quality and/or conformity managed in accordance with standards.
Direction of the flow (most U.S. Solid Valves are UNIDIRECTIONAL)
FLOW DIRECTION
Make note of the arrow on your valve. Most U.S. Solid valves are unidirectional. This means they are intended for flow in one direction only, in the direction of the arrow. See Figure 1 for location of arrow. If connected in opposite direction, the valve will not actuate properly (will not close for Normally Closed valves). Additionally, be sure the medium passing through is filtered. If not, particles will cling to the gasket over time, which can cause it to not seal properly.
National Pipe Thread, Standard USA thread (use Teflon tape to seal)
THREADING
U.S. Solid Valves follow National Standards for pipe thread. In the U.S.A. we use NPT, while in England we use BSPT. We recommend use of Teflon tape to ensure seal of the NPT threading, as shown in Figure 2. The tapered male and female thread are forming angled surfaces that with increased torque squeeze the Teflon tape that results in a tight seal. It is suitable to liquids, gases and even for high vacuum. NPT seal is known to be use even in UHV (Ultra High Vacuum) applications. Note that this particular valve is not pneumatic by design but numerous of our customers use them for compressed gasses.
POLARITY
For valves with 2 wires, the valve will actuate regardless of which terminal each wire is connected to (+ or -). Some units, like those pictured to the left, include a ground wire. Open up the connector and look for the ground symbol, shown in the corner of Figure 3. For valves with a ground wire, please be sure to ground the valve. For the other two wires, the valve will actuate regardless of which terminal each wire is connected to (+ or -).
OVERHEATING
These valves are not intended to be energized for more than 8 hours continously. While most do not have more than 18W of power, the coils are in a contained area, and can burnout if energized for too long. If necessary to energize continously for extended periods, we recommend a computer fan to keep the coil cool.
GASOLINE WARNING
This solenoid valve comes with a NBR gasket. NBR gaskets are not intended for use with gasoline, kerosene, or other petroleum products. If your valve is needed for these, please purchase a valve with a VITON gasket.
PRESSURE
All solenoid valves need some pressure to actuate. This is especially true of pilot, or indirectly operated valves.
SKM
Reviewed in the United States on October 17, 2019
Worked reliably in an experimental ventilator system prototype. Would not use it if duty cycle requires long continuous on time (possible heating of coil) or extremely low pressure drop. It is a direct acting solenoid valve that has no minimum pressure to actuate (as in pilot operated valves with larger orifices) and so has a rather small orifice resulting in on-time pressure drop that is not insignificant. This is a problem only in the few cases where the operating pressure is low compared to the maximum rated pressure for the valve.
Jacob Buscher
Reviewed in the United States on February 24, 2017
These are crap. Why can't anyone make a solenoid that just works. Out of the 10 I bought for a university research project 3 leaked after just two days of light use (On for 7 seconds each hour). I am using 5psi of pressure and these are rated to 101psi. I backed it down to 1psi and they couldn't even hold that! The other 6 are working for now but with every passing day they start to degrade.The solenoid has a spring that covers a small internal hole that looks to be 1/16 of an inch in diameter. The spring that seals it generates 1/3 of a lbs of pressure to keep the hole stopped. Yes, someone passed math class, that is exactly the spring you need to justify the 101psi rating, good job. Come one though, there is not going to be a perfect seal. This is the real world not a physics problem. I upgraded it to a 1.5lb spring and now they work. Really! I know what spring to put in better than you do! Do you want the tech specs of the spring? I’ll send them to you.This set of awful leaking low quality solenoids caused me another time delay in my PHD project. Some of the screws where striped inside the mechanism and someone even forgot a washer on one of them. WOW
jim1945
Reviewed in the United States on April 30, 2017
Pretty much what I expected, given that my application was for operation at very low pressures. Guess I expected the valve to have a little greater volumetric flow rate when open, but it is adequate. Apparently the solenoid valve's orifice is rather small, such that the back pressure in the line is about 10 psi greater with the valve installed than without it. I need the solenoid valve to stop the flow of herbicide through my spray rig when its pump is stopped. Without the solenoid valve fluid would drain through the pump head and dribble out of the spray nozzle onto the ground. The hydraulic head is about 12 to 18 inches, so not a lot of pressure when the pump is turned off. I gave it 4 stars instead of 5 because the 1/4" pipe thread didn't tighten as snugly as I thought it should and I had to apply several wraps of Teflon tape and wrench my pipe nipple and tubing adapter all the way down flush with the valve body, but no leaks at 50 psi so it works!
Nancy &darrell priebe
Reviewed in the United States on June 10, 2016
worked good at first but then started leaking and just got worst. replace them with the same and now I am replacing those again. I guess I need to find another brand.
Made in USA
Reviewed in the United States on December 6, 2016
I really like this valve. It is well made, positive on off operation. 1/4in pipe threads are tight sealing. I use it to control my spray bar on our atv for spraying weeds. I recommend it to others. Note: Do not over tighten the fittings that you screw into it. You could crack it if you get carried away. It is built well but still any female threaded fitting is prone to cracking if over tightened. I hate it is not USA made. They try to fool you I think with the name!!
C. Man
Reviewed in the United States on December 4, 2016
I've used two of these in a DIY lift/dump system (less than 100psi) for my Handy bike lift. I'm running them from a 12V 1a power supply used to power some sort of electrical device I had lying around. They fit 1/4NPT pipe and fittings. I typically hold them open for no more than 1 minute at time and they have performed as advertised. Be careful when tightening as I have read some buyers have cracked theirs due to pipe having tapered threads. I had no problems and the install was great.
Ron LeBlanc
Reviewed in the United States on August 20, 2014
Barely got the fittings tight and the plastic housing cracked. But it's still working great!Edit: 7/2/2015 I was sent two replacement valves and installed them with no issues. The ones I replaced must have been a weak casting. Kudos to U.S. Solid for making this good. I will admit this: Even with the plastic housing cracked the old valves were still leak free!! I am super impressed!
Jeffrey Aaron Dyer
Reviewed in the United States on December 26, 2014
The valve worked well for a few weeks, then crapped out I me. I used it for an air ride suspension setup on my harley. It went out not even 2 months after installation. Luckily I had ordered a different valve from a different company so I was able to switch them out. I wasn't sure what to expect with this, but I thought for dang sure it would last more than 6 weeks. You definately get what you pay for with this product.
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