Monday, 26 August 2024
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In our private residential irrigation system's, we typically have a control valve that has and AVB. For valves that irrigate a slope, we have the control valve with ABV at the bottom of slope, but plumbing code requires an AVB higher than the the highest elevation of any emission device of the system. To show this correctly, we show the ABV as it should be installed

We typically bring in atmospheric vacuum breakers in as >>Auxiliary Equipment>Backflow Device.

By doing it this way, the AVB does not want to connect to the lateral lines. It wants to only attach to a mainline.

My guess is that in order to get this to function properly, the AVB that we are bringing in will need to be categorized as another piece of equipment rather than what it truly is, a "backflow device". We have them shown as per my screen shot, and not connected to either the mainline or lateral line. However, running the Verify Mainline command generates an error showing that all of these are not connected to a water source.

Suggestions for best practice to get it to not generate an error? Is it possible to allow backflow components to be connected to either a mainline or lateral line?
Rob Streza set the type of the post as  Issue — 1 month ago
Hey Rob,
Good to see you here. Your drawing reads well. And yes. What you are doing and describing is exactly as it should be (at least that's the only way that I 've ever designed them). It is obvious that lateral lines need to connect to AVB's. Maybe It's a Custom Valve. Consider this:
Irrigation Equipment dialog box> select "Valve". New> select anything *I selected a Drain Valve*> Custom (the only option for drain valves>
In the Equipment Info dialog box, replace the "Model and Schedule Description" to say Atmospheric Vacuum Breaker" and fill in any other language "Champion Brass...." > then click OK

Now you can attach a a lateral to you AVB.

Now after thinking about this, I could have chosen a different valve to modify. That way I could add a size. But not really necessary if you specify in the description that it would be |line Size". Anyway, this worked for me.

You will want to add a new block where you want to pull from. For instance, I added a Drain Valve. There is only one block available, and the "D" is not an attribute. Sure you could modify the block in the drawing, but in your case, where you often design these, you'll want to add the block to your library.

Obviously, this will not enter into the friction loss calculation though.

BTW, you can now import this from the project that you are working on and it will also bring in the detail thatr you associate to it.

I hope that this workaround helps. Maybe LandFX will come up with a more effective solution.
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