Adding pbv valve direct to yard hydrant

[vwguygti]

I can’t seem to find anyone that has done this online, which leads me to believe it’s not an optimal way to add irrigation…

I’m adding some in ground irrigation and although I’d rather tap in on a 1” line in my crawl and use a wall irrigation hydrant, the highest planned sprinkler would be roughly 10’ above my subfloor.

I have a yard hydrant at that high point that I could use for my water source, so my question is, could I simply add the pbv valve directly to the hydrant and pipe down to my box with the manifold/valves? The other options would be to remove the hydrant and add a pbv valve in its place (seems redundant) or add the irrigation wall hydrant and use an RPV valve at the house (adds significant cost).

Thanks in advance for your input!

 

[Fitter30]

Since a yard hydrants hose connection comes off at a odd angle could use a female hose to 3/4" mpt adaptor to a street 90° (ell) and a regular 90° to your pbv ( don't have a clue what that is). 10' will lose 4.32 lbs of pressure plus how ever long with fittings for the pipe, hydrant, pressure drop of pbv is and then the pipe and heads of system.

 

[Sponsor]

 

[vwguygti]

Since a yard hydrants hose connection comes off at a odd angle could use a female hose to 3/4" mpt adaptor to a street 90° (ell) and a regular 90° to your pbv ( don't have a clue what that is). 10' will lose 4.32 lbs of pressure plus how ever long with fittings for the pipe, hydrant, pressure drop of pbv is and then the pipe and heads of system.

sorry, *pvb (pressure vacuum breaker) backflow valve.

What you suggested is along the lines of what I was picturing. If I do go the PVB route at the hydrant, it’s at the highest point, next to the well head, tee’d off from the 1 1/4” nipple off the pitless.

Have you ever see someone run the backflow valve directly off a yard hydrant?

 

[WorthFlorida]

Is the well for both domestic and irrigation?

You can place a back flow anywhere as long it protects the domestic water supply according to code requirements. Not sure what type of wall hydrant you have, I would place the backflow preventer before the hydrant.

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4 Backflow Preventer Types​

• Pressure Vacuum Breaker (PVB)
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• Atmospheric Vacuum Breaker (AVB)

 

[Fitter30]

Can use an atmospheric-type vacuum breaker, a pressure-type vacuum breaker or a reduced pressure principle backflow preventer. What ever u use make it easy to remove for winter.

 

[vwguygti]

So I did use a PVB off the hydrant and added a spin down filter before going into the ground irrigation box. Still need to run all the poly, build the manifolds, etc. I’ll post a picture when I’m done. Hopefully it’ll give someone else the idea/option, as I was unable to find anything online similar. Thanks for all the suggestions!