U.S. Solid Motorized Ball Valve- 1/2" Brass Ball Valve with Full Port, 9-24V AC/DC and 2 Wire Auto Return Setup

Pricey but solid. they work solid and do make the zippy noise. These are not INSTANT. They take a couple of seconds to open or close. Great for RV tanks as you can barely hear them work. I haven't had one malfunction yet with gray water or debris. I got them on multiple tanks under the RV for almost a year, no problems (I do spray silicon lubricant into each valve every 6 month to avoid salt water corrosion). These don't overheat when left ON ( I leave them open all night when the temp drops below freezing) to empty the tanks and avoid ice damage.

I used this to control the water for an automatic evaporative cooler setup. It worked perfectly all summer exposed to full sun in 115°+ weather. It did not see much rain so I cannot confirm its water resistance.

Having trouble with undependable swing gate valves? So was I on my RV heating system! Installed this motorized unit and eliminated occasional cold blowing heating ducts! Very simple installation. As soon as system fans engage this unit opens and we have HEAT! No gate valve partially open or not! This units ball valve totally opens or shuts and allows a FULL FLOW of fluid.

Update 9/19/2021 Chinese companies often make up names that are supposed to be American sounding to appeal to the American buyer, and sometimes they get it so wrong it is comical. "US Solid" is as blatant as you could get. Would a real US company name itself "US Solid"? Seeing how much the price has gone up on these, I unscrewed my non-functioning US Solid Motorized Ball Valve to see if I could fix it. If you "Roll over to zoom..." the 5th image, the one of the green circuit board inside, you can read 'CWX15-CR04' printed on it. I searched for CWX15-CR04 to see if I could find anyone selling a replacement circuit board and that led me to find out there is a real company name Tianjin Tianfei High-Tech Valve Co., Ltd. that makes these and sells them directly with their own "CWX" brand name., and they sell them quite a lot cheaper, if you don't count the shipping cost. I wonder if "US Solid" has any connection to the real company that makes these. I've also found them rebranded under other brand names. As for "solid", when I unscrewed it I noticed the external screws were rusty. How much would it cost them to use stainless steel screws? And the screws inside were also slightly rusty, so moisture had gotten through the whimpy looking case gasket. After I poked around with my meter probes the the dead circuit board came back to life. I'm guessing some internal, bad connection got jiggled, since there was nothing more I did to fix it.. So I upgraded my review from 2 stars to 3 because at least now it is working again. My original review, 8/15/2018: The standard diaphragm solenoid valves used in sprinkler systems cause significant pressure drop and are also unreliable. A motorized ball valve has no pressure loss which means I can put more sprinklers in a zone. This one makes an easy replacement because it returns to closed when power is removed, like a solenoid valve, and unlike most motorized valves and it can take a wide range of voltages, ac or dc, making it an easy drop-in replacement. Update 6/22/2021: I bought a second one and it failed after two years of light use. My sprinkler system only operates for a couple of months during summer and then only a couple of times a week, so the valve would have had less than 100 cycles. The advertisement says "The estimated life expectancy of 80,000 to 100,000 cycles means it is built to last". I am downgrading my review to 2 stars

I'm very impressed with fit and finish of this product. Looks to be built well. I've tested one of them with a 24 volt power supply that i also ordered for my project and it works well. I maintained the power on the valve for approximately 45 minutes and the valve stayed open just as it should. When the power was removed, the valve closes. I also monitored the temperature on the valve and could not feel any heat at all. I'm in the process of installing these valves on my new shower to make it a smart shower. I'm using ge smart switches to activate the 24 volt power supplies for each of 3 valves. One will turn on the regular shower. Another will activate the rain shower and the last will activate the hand shower. I will have a smartthings button inside the shower that will be able to change back and forth inside the shower. I have no normal hot or cold water valves in this shower. The water will be routed in to the valves from a watts thermostatic valve which will be set to my perfect temperature. All this will be tied together with smartthings hub and Alexa. I will be installing a gfci plug that will have a battery back up plugged in and then all the components of this shower will be plugged in to this battery back up. I'm putting a lot of faith in these valves. Lets hope it works! Update!! Valves are working great after two weeks of use. I love my automated shower!