3 Pack SUNROAD Lead-Free Brass 3/4" Inch MHT Hose Bibb Connector Backflow Preventer Vacuum Breaker,Check Valve For Garden Spigot RV Hose Connection,Anti-Siphon Fitting with extra set screws

The anti-siphon fittings on our newly purchased 5 year old home were leaking and needed to be changed. I found these replacement fittings that came in a three pack, and since that was the number required for my three hose bibbs, I decided to give them a try. They work great and everything you need is in the plastic box they come in. They provide rubber washers, teflon tape, and both the supposedly required set screws that are made to be anti-tamper once installed and my preferred type of standard set screw. The kit even includes the small allen wrench that allows installation of the standard set screws. This is a well thought out kit and I highly recommend it.

Packaged nicely. Well thought out product offering for small to average size home that as two or three outdoor faucets. I only have two faucets so now I have a spare just in case. Plus there are several extra washers included too. Everything needed for an easy and successful replacement is included in this package.The set screws that are included (with wrench included) were also what I was seeking and were not offered with any other products that I looked at. The set screws will allow a person to remove and replace these fittings much more easily than using the break off screws. My original faucets had the break off screws. So, these screws needed to be drilled out in order to remove the older failed fixtures. The included set screws are a better feature.The shiny new brass fittings make my original faucets look really old and weathered.And speaking of old and weathered... Once I had removed my old fittings, I could see that the threads of the faucets were not in the best of condition for whatever reason. Plus, when I drilled out the old break off screws from the faucets, I did drill slightly too far and dinged the faucet threads slightly. SO, I would recommend that the included thread tape to be used. Not because of any issues with the new fittings purchased, but because the tape will compensate for the older possibly worn faucet threads and ensure a sealed fit. I did this.New product works fine and no leaking, even though I damaged the old faucet threads slightly.I gave 5 stars for durability too, but primarily because being brass they probably will hold up much better than some of the nylon of plastic fittings that I saw at a few other places. So, if the fitting internal mechanism works as anticipated then these should be excellent.

fit fine no leaks

Fit perfectly and all three perform flawlessly. My old ones had become very noisy when the water was running. These are so much quieter. Easy to install without leaks. Appear to be high quality with good weight to them. Pricing is a bargain!

These appear to be good. Some of the comments 'hose theory' seems a bit off, so I will give a breakdown.Hose threads do not normally seal, they are only mechanical, and pull tight.The edge of one fitting seals into the hose washer on one side, the edge of the other fitting seals to the other side of the hose washer. It should be water tight from one edge, to washer, to other edge. In other words no water pressure should even make it to the hose threads or there is already a leak at the hose rubber washer. The hose threads and outer portion only clamp the edges to the rubber washer, the hose threads are not a seal. Think about it, with that black rubber washer down in there, and the edge of the spigot you're putting this on, if they are properly tight then there won't be any water even getting to the threads where this screws onto the spigot. The pressure will be contained between the spigot edge and the rubber washer, the upper threads in this only hold them tightly together.When you wrap the spigot with some of the teflon tape, that is mainly to keep them separate and from corroding together, so it will remove easily later. As you're wrapping the back side especially, it is EASY to wrap too low, and allow the tape to fold under the edge of the spigot. After you wrap, look under the spigot at the edge that will press against the washer. If the teflon tape has folded under the edge, that tape will be between the edge and the rubber washer, and MAKE a leak because you have prevented a proper seal between the edge. It is important that you do not allow the tape to fold under the edge, and compromise the seal between the rubber washer and the spigot edge.If you compromise that edge seal, THEN you have to use a lot of tape and make sure the upper threads don't leak, because you've made a seal failure at the spigot edge and the rubber washer, where the seal is supposed to be. Obviously, this is to be avoided, and seal at the correct place at the washer and edge.Always remember, it is only 'hose end, rubber washer, other hose end'. The TUBE to carry the water is made complete by the rubber washer, and the threads are there to tightly clamp the tubes to the rubber washer. The threads are a mechanical clamp to press tightly and seal at the hose washer, they are not supposed to be a water seal.By the time you're leaking at hose threads, something is already wrong down at the rubber washer, water wasn't even supposed to make it to the hose threads since they are merely the clamp of the system. Think of it as if you substituted 3 buckle clamps around instead of the hose threads. Three buckle clamps to hold the ends tightly together and press against the rubber washer, and no leaks. You wouldn't expect the buckle clamps to hold the water, that is what the rubber washer is for. The exact same is true for the hose threads, they are not pipe fitting threads, they are clamps just like the buckle clamps.This is also why you should buy a new bag of hose washers every year or two. The washers are the seal, and harden and wear over time, they should be replaced fairly often.Also the single edges like the spigot should go to the flat side of the rubber washer. A lot of rubber washers have 3 rings on the other side, use them against the wider flat portion that is usually inside of the female hose fitting. The 3 rings then have 3 chances to seal against that wider flat surface, and makes it much more tolerant of grit and other imperfections.

The 3-pack arrived when predicted, was easy to install. I have used this brand before and found them to be durable. What was extra nice with this 3-pack was the inclusion of extra hose-end washers and a spool of Teflon tape to use on the male threads of the backflow preventers and hose end fittings. I consider this purchase a very good value.

Not worth the hassle worked on them for 2 days 1 of the 3 worked fine the other 2 if you tighten to tight they wouldn’t blow off the pressure. They worked fine if you loosened them but then they would constantly leak. You get plumbers tape with this kit used most of that up trying to stop it from leaking with no success. So I would definitely say 2 of them came defective. I would return them but I’m using the one that is working and I used up all the Teflon tape.

Seems well made but noisy when water turned on and leaked after water shut off