Frost free sillcock rated for continuous use

In_New_England

Another day, another thing I learn. About to pull the trigger on a 12" Woodford frost-free (based on reccos on this forum) I see in the specifications list: "Not rated for continuous use."

After a brief internet rabbit hole I understand that this has to do with the anti-siphon system: these are not rated for continuous pressure.

Any suggestions for a good quality sillcock rated for continuous use?

(As you may have guessed I'm adding a timer based irrigation system for our plants and so will keep the bib/sillcock always on in the summer.)

mattmia2

you can look at prier, they are the other bog high quality manufacturer but they aren't really intended to be used that way, might have to tee a second line off and out of the house to a vacuum breaker designed for irrigation systems and connect that to a hose bib or boiler drain.

mattmia2

look at the bottom of this, it looks like only using for 12 hours is part of the standard for sillcock vacuum breakers

https://s3.amazonaws.com/s3.supplyhouse.com/product_files/Prier-C-144D08-Product%20Overview.pdf

Intplm.

None that I know of are rated for continuous use. That said, I am currently using mine for temporary drip potted, irrigation. The concern is that the built-in Vacuum Breaker (VB) will, with continued use, and therefore continuous pressure, discharge water from said VB. All of them are designed this way to discharge the back pressure. Also, your local code may not accept the sillcock to be used this way.

Instead, maybe try something like this on a regular hose bib.

You will need to winterize it as it is not "frost-proof." But it should offer a better result.

hot_rod

Maybe just a regular hose bib protected by a RPZ up-stream of it. The hose bib type may spit water every time pressure is applied then removed. It's doing its job.

In_New_England

https://forum.heatinghelp.com/discussion/comment/1861319#Comment_1861319

I'm guessing https://www.supplyhouse.com/Woodford-14CP-12-MH-Model-14-12-1-2-MPT-x-Sweat-Inlet-Wall-Faucet-w-Metal-Handle

(14CP-12-MH) - the 14 series - will work for my application. Would appreciate someone takign another look. There is no vacuum circuit breaker, so there is no 12 h limit.

https://forum.heatinghelp.com/discussion/comment/1861325#Comment_1861325

Yeah, I attach those between the spigot and the hose.

mattmia2

It is required to have backflow protection one way or another. RPZ valves are very expensive. The irrigation type vacuum breakers are quite a bit less expensive.

Jamie Hall

This is all on a timer? Your simplest — and safest — bet is going to be an on/off valve in the building where it won't freeze, then a vacuum breaker, then a line going to the irrigation connection — with another valve out there somewhere which OPENS when the irrigation system is off, to dump pressure from the system.

Karl Reynolds

Look into the Woodford Model #32. While it does not state "continuous operation", it is designed for lawn sprinkler supply.