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💧 Keep your water flowing flawlessly—because your setup deserves the best!
The Hudson Valve 1/2" Self-Contained Automatic Water Float Valve is a compact, durable solution designed for automatic water level control in ponds, pools, fountains, livestock tanks, and more. Featuring a 1/2" FNPT connection, it supports flow rates from 300 to 2,400 GPH. Made from rustproof, freeze-resistant ABS plastic, it installs quickly without external moving parts, ensuring reliable, maintenance-free operation in tight spaces.










| Asin | B005FYN7OM |
| Best Sellers Rank | #62,013 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #50 in Faucet Valves |
| Brand Name | Hudson Valve |
| Connector Type | Pipe Fitting |
| Customer Reviews | 4.2 4.2 out of 5 stars (201) 4.2 out of 5 stars |
| Exterior Finish | Abs,Plastic |
| Inlet Connection Size | 0.5 inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Dimensions | 5.25 x 4 x 4 inches |
| Item Weight | 8 ounces |
| Manufacturer | CAI - HUDSON VALVE |
| Manufacturer Part Number | V-S-G |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Maximum Pressure | 140 psi |
| Model Number | V-S-G |
| Number Of Items | 1 |
| Number Of Pieces | 1 |
| Number Of Ports | 2 |
| Outlet Connection Size | 0.5 inches |
| Outlet Connection Type | FNPT |
| Size | 0.5 Inch |
| Specification Met | ASME, ANSI, ASTM |
| Thread Size | 0.5 inches |
| Thread Type | NPT |
| Unit Count | 1 Count |
| Upc | 766069610405 696333454544 |
| Valve Type | Float Valve |
User
Keeps fountain filled
I have 2 fountains, and it was always difficult to keep them filled especially with evaporation from heaot weather. This device works well and should prolong pump life.
User
Works as advertised. Happy customer.
I travel frequently, so I have a concern when it comes to my pool water level. In the fall and winter, the water evaporates about 1/2" per day. So, I need a automatic pool filler. Online, these things are ridiculously expensive for what they are. So, I decided to make my own using this valve. I made it out pvc pipe and put it in the pool. It appeared to work as advertised. Unfortunately, the spigot that supplied the water had sprung a leak and I had to go out of town for several day. The spigot and apparatus had to wait. I disconnected everything and went on my way. I got home later in the week and repaired the spigot. I hooked up the hose and placed the pool filler in the water and turned it on. Water flowed as it should have. About and hour or two later, I went to check to see if the valve had shut off. It was still running with the water about 3" up the valve. What the heck! It worked the first time I tried it. I tried shutting the water on and off and moving the float up and down but neither worked. I was a little discouraged to say the least.So before making a phone call the Hudson, I went on their website to look for a troubleshooting section and did some reading. I am on municipal water so that should not be an issue. They mention any type of obstruction being an issue. This also should not be an issue as everything is new. But, I should look anyway. Maybe some teflon tape or something got in it. I proceeded to unscrew the valve from the filler. I looked in the top and there was a gray mass of crap in the top. Huh? So, I started to pull it out before realizing what it was. It was a small lizard. Yes, a lizard. Evidently, when I disconnected the hose earlier in the week from the unit I just left the whole thing sitting by the pool. When I put it together later in the week, the lizard was in the pipe. He was doomed.I proceeded to take the unit apart and clean out the remains. It is a simple unit and this was quite easy to do. I put it back together and re-installed it on the filler. Put in the pool and it shut off immediately as it should.Ever since the incident, as it has become know as, the valve has worked flawlessly. I now have confidence that I can leave the unit alone in the pool and leave town without worrying about an overflow and waste of water.I know this is more of a story than a review, but be assured I am happy with the valve. I have since been asked to build another pool filler for a friend. I will utilize the same valve for his.Bob
User
Good product, but if you have problems....
This is the second Hudson valve I have purchased for my pond. The first lasted a couple of seasons and, while I was disappointed it didn't last longer, it worked very well. The first one literally fell apart and I lost some of the internals. I ordered a second valve and installed it before I left on a trip. Upon my return, I found the pond was overflowing. I took the valve out and noticed that the float occasionally would not properly shut off the water flow. I took the valve apart and, finding nothing obviously wrong, compared the float to the float in the previous valve. There had been a design change in the float. The photo shows the new design on the left (barrel shaped) and the old design on the right. I installed the old float in the new valve and it works fine now. I sent a note to Hudson explaining what happened and got a reply from Leslie stating: "It was a height issue and it has been resolved. The new float is much easier to place correctly into the body, if you like I can send a can send a corrected 1/2" float if you provide an address." I thanked Leslie and agreed the new float is much easier to assemble than the old design. I also gave her my address and asked for a replacement. I did not ask why they were still selling the new design if they know it is defective. If yours doesn't work reliably, you might inquire about the float design.Update: I received the re-designed float for the new valve from Hudson. Side by side with the float that came originally with the new valve, they are identical except that the replacement float (on left in pic) is a little darker color. Leslie (Hudson) said the problem with the original float was a "height issue" which had been resolved. Honestly, I was skeptical. I got out my micrometer and made several comparison measurements. The only difference I could find was indeed the overall height. The replacement float is about 6 mils (0.006") taller than the original float. Still skeptical, I repeatedly swapped the floats in and out of the valve and exercised the floats. After several swaps, I came to the conclusion that the replacement float did not have the same tendency to "stick" or "hang up" as did the original. The original float is going in the recycle bin.Updated Update: I just received from Hudson the reason I got (and others may still receive) a faulty valve. When I thanked them for addressing my issue and stated I hoped others did not run into the same problem, they responded that they discovered the issue after the first shipment and that not "all fail or 'stick'". I interpret this to mean that, while they were aware of the issue, and made changes to address it, they were not going to concern themselves with the defective products already shipped unless someone complained, as I did.Bottom line, this is a good product. But, if it does not control reliably, there may be a design issue that Hudson is fully aware, and has addressed. But they have not felt it worthy to recall the faulty designed units already shipped.
User
Glad that they finally fixed the problem.
Nothing beats a Hudson valve. Bought one for my swimming pool and one for a water pond several years ago. Two years ago the one for my pool started to not shut off completely. It had worked for several years and I was satisfied with it, so I ordered another one. I installed the new one and it wouldn’t stop leaking. I see that several people commented on the same issue. I didn’t think about contacting Hudson, I just reported a defective item and requested a replacement. Hudson replaced the defective valve with another one that was also defective. I purchased a valve from another company and was able to make it work. The other valve finally failed so I went shopping for a new valve. I was surprised to see Hudson valve was still available, didn’t think they could remain in business with defective valves. I’m very glad that they have resolved the problem with the valve. Just installed the new valve and back in business.
User
Not happy
Bought a 1/2" valve - hoping for a reliable valve. This is not it. It will work for a week or so and then just never trigger on. I remove it, I clean it and nothing fixes it. Online numerous similar accounts.
User
Worked PERFECTLY and exactly what was needed. Quality was number ONE!
Simple to use. Just had to figure out how to get the unit emplace for my needs, but appreciated Amazon offering a much wiser selection of product than I could get from Irrigation Supply stores, none of which offered the 1/2" unit...and here Amazon delivered it to my doorstep in 24 hours. Couldn't be more pleased
User
Great job. Fast delivery
All my fittings and mounting bracket switched out perfectly. The float was installed 20min. After receiving package. Thanks for selling the stripped down version. I go through 1 per. Year with or without water filter. Az. Water is so full of alcaline. (Seller saved) Will purchase more.
User
You may need a pressure regulator.
First, finding a pond shut off valve of any real quality is outrageously expensive. Thankfully Hudson offers a quality low-cost option. And they are an American made product.After the very easy install, I really liked the flow rate the valve produced. I was concerned that it was not going to fully shut off after reaching the float level. I let it sit over night and in the morning the pond was over full. I could see the valve open every so often while fully submerged. I subsequently ordered a replacement.I decided that maybe the valve didn't like the water pressure from my irrigation system. Approximately 60psi.I installed a 25 psi in-line pressure regulator on the original valve and let it sit again over night after I lowered the water level. That fixed it! I will probably keep the replacement valve as a backup. There is nothing in the instructions that mentioned the water pressure requirements. Maybe Hudson should do some research and offer inline regulators in their product line. 10% commission please!
User
Great product
Good product and what I ordered
Trustpilot
2 months ago
1 week ago