Hose Bib Backflow Preventer with Tap Timer
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- เผยแพร่เมื่อ 17 มี.ค. 2020
- If you have a hose bib tap timer like this Hunter BTT, you will need to think about backflow prevention and where you need to install a backflow preventer, like a hose connection vacuum breaker.
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Where do you put the hose bib backflow preventer or vacuum breaker when you install a tap timer? The answer is after the timer. These vacuum breakers operate with a spring inside and do not work under pressure. When it is before the timer, the backflow device will be under pressure all the time because you leave the hose bib on and let the valve in the timer turn it on and off. Therefore it will not work. So install it after the timer. Then install what ever attachments you are going to after that.
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You are the smartest man alive
Thank you so much. Exactly the question I was trying to find the answer to.
Thank you! This is what I needed to know. I've been so frustrated with trying to get the timer to work with that vacuum breaker. I did have to purchase a converter with fine threading for my hose bib but thankfully spigotmaster thought off this problem!
Finally the information that I needed! I’m about to try this because that anti siphon leaked a slow drip all night
Very helpful.
Thank you so much for this. It was very helpful.
THANK YOU
Thank you. I was looking for this info.
your videos are very informative, learned something new
Glad to hear that! Thank you.
I’ve been on YT Looking for this exact answer thanks for the video
This is what I needed to hear! I thought I had a faulty one, but I need to install it AFTER the timer.
Good. I’m glad it helped.
Thank you I was looking for an answer to my problem.
You are welcome
I just installed the Rainbird DIY at my house and every type of timer I used has a leak around the vacuum breaker. I’m going to try this and hopefully it works! This is exactly what I was looking for great video!
Good. I’m glad this helped.
WOW! Thanks@@@@@
Welcome!
In this setup where would a pressure regulator go? Thanks
The problem is that many modern spigots with these Vacuum-breakers have finer threads. This is specifically so you CAN'T attach a hose directly to the spigot. If you remove the vacuum breaker, the timer input threads will not match up with the spigot. And the vacuum breaker threads will not match the output of the timer.
You need the adapter by Spigot Master.
I took my vacuum break off but the threads are fine thread and my timer won't work. I've looked for adapters but no luck. What to do now? Any help would be great.
This is a great video. I have my back flow preventor before the timer. Now I know that is not correct. I will change it. Thanks a lot.
You bet. Glad to help.
Thank you for the video. What if the house has in ground sprinklers with one of those timers but with 4 stations”. are these backflips preventers ideal for this situation, if so, I would assume each station requires one, yes?
That is a good question. In theory I would say yes. To get the proper backflow protection each outlet would need one of these, although that does sound a little over kill.
is there any other timer that I don't have to take back flow off?
This works for a single hose. What if we have a timer with 2-4 outlets?
What if I can’t get it off the hose bib?
Great Video, this gave me an answer which I was looking around. Also, I need your suggestion on my hose timer setup. I have one exterior faucet in front of my home where I'm installing soaker hose surrounding my home which is about 250 ft. I have an "ABP Arrowhead Brass Vacuum Breaker 1019-A 486 BFP PK1390" vacuum breaker attached to my faucet where it's connected to a 2-way hose splitter(Y connector) and one end of hose splitter is connected to a smart hose timer followed by a filter, then a 20 psi pressure regulator and again ending in a 2-way hose splitter(Y connector) so that I can have two connections for soaker hoses. So in this case, as you suggest I can place the vacuum breaker after the hose timer. If I do so, shall I need to place another vacuum breaker on the other free end of the first 2-way hose splitter? Because if I move the vacuum breaker after the timer, the first two-way hose splitter ends up connecting the faucet directly and only one end of the hose splitter has a vacuum breaker connected. The reason why I have a 2-way shoe splitter connected in the first place is that one end can be used for soaker hose setup and can have another free end which can be used for other future purposes.
I know its a bit confusing but any suggestion would be greatly appreciated. Thanks!!!
Yes. You will need another vacuum breaker for the other side of the splitter going to your hose. That is what I would do and suggest.
@@AmericanIrrigator Great, thanks for your response.
Hello..thank you for info!..however if hooking up a timer..do you really need a backflow preventer?..reason being is because when timer turns off..it closes its valve preventing any water from coming back does it not?
Yes you are correct in that when the valve is shut nothing will backflow. Most of the time things work well and you may not need a backflow preventer, but a backflow preventer is for the times things malfunction and there is a problem. Like a water main break near your house. A water main break will cause a negative pressure down the line creating a suction ( back siphonage). If you were watering during this time, meaning the valve is open, there is a possibility that it will suck what ever is in your line into your house and possibly into the water main. I've heard of a ton of horror stories of this happening, so I like to take the approach that it is better to be safe than sorry. Plus it is a city code in most places but this mostly affects new builds. Stay safe out there. Hope this helps.
Very good video. I keep have my backflow preventer dying within months.
Question, From the main spigot, I have a 4 way splittler for the water. I keep the water on all the time, and from each split of the hose, I have a timer on each of them. Do I need a backflow preventer after each of the timers?
Technically yes form my understanding and form what I have been told.
@@AmericanIrrigator Doesn make sense to me. We want to prevent water from going back so if its after the spigot, shouldnt that prevent it. I have 2 four way splitters. No way installing 8 of these makes sense.
Great video and we'll explained. Is it okay if I link it to one of my videos?
Sure thing. I watched a few of your videos too. Good job. I subscribed to your channel and will be watching for new stuff. Keep it up.
@@AmericanIrrigator Awesome and thank you! Will also be checking out your channel to learn more. 👌
I have a 2 zone water timer, do I need to have a backflow preventer for each zone?
Technically Yes. It sounds funny and it may look funny, but having one on both outlets is the way it is supposed to be done. Because they are not meant to be under pressure all the time you can not just put one before the timer. It will not work properly. That is my professional opinion.
Apparently this wouldn't work with my water valve it's got a integral anti-siphon backflow valve...it's built into water valve and can not be removed.
Will this stop inside water pipe from banging when timer turns off?
no, you might try a anti hammer device between the timer and the spigot.
If the main shut off valve is kept open and the timer valve is open, water will flow out to the irrigation system. But when the timer closes the timer valve, I don't understand how water can backflow into the house past a closed valve? Therefore, why is a backflow preventer needed?
I usually say it is not for the cases for when everything works properly the way it should. Backflow preventers are for the times when things go wrong. It may not happen much, but it is better to be protected when it does.
When the valve inside the timer closes, simultanuosly sprinklers heads retract back causing the water inside the pipes to be pushed backwards. A drain valve in sprinkler will minimise as well the back flow as it drains water once the valve is closed. Its always better to add a vacuum breaker.
I have a vacuum breaker hard attached to my tap, if my tap timer stops the flow and puts it under pressure the vacuum heavily leaks everywhere. Is that supposed to happen?
No that is not supposed to happen. It may be damaged or wore out and would need to be replaced. Most of the time when they start to leak, it’s time for a new one. Unfortunately they do go bad from time to time.
@@AmericanIrrigator Thanks mate
This video makes almost no sense. With the water left on, there is no backflow. If city water pressure drops, a back flow preventer stops backflow whether it is on the spigot or each of the hose ends. In fact, putting it petmanently back at the spigot is required by many local codes. Further, most timer ends aren't designed to take the often short threads of the backflow preventer and they tend to leak if installed there. Leave your backflow preventer at the spigot and don't worry about this nonsense.