Direct to RPZ Legs for Blowouts?
Where I work RPZs are the only acceptable backflow prevention assemblies and most systems don’t have a downstream hose bib and quick connects are rare. Come fall it seems the weather is 80 degrees in the fall and nobody wants to stop watering then bam a front moves through and those RPZs are just flapping in the cold wind. My question is has anyone made a type of copper union that could be attached to a bare outgoing leg with the RPZ removed to connect it to the compressor? That way we could stop pounding the second check valve when there’s no hose bib or other option and also have the option to quickly move through and remove RPZs before a surprise freeze then come back to the legs to blowout later. I’m thinking make a few 3/4” and 1” with just threads or the nut to accommodate the common unions we see.