I just got my sprinkler system winterized and noticed this nut is

How To Winterize Your Irrigation System (Blowout Sprinkler System)

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Toilet keeps topping off every few minutes? : r/askaplumber

WinterProof™ - All Purpose Water System Antifreeze with BurstGuard™ Guarantee -50°C, Plumbing Antifreeze 9.46 L

Any reason this pipe should be open? There is another one nearby

Guide to Winterizing Your Sprinkler System in Ogden, UT

How To Winterize Your Irrigation System (Blowout Sprinkler System)

Winterizing your sprinkler system

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CAMCO 36543 RV Pump Converter Anti-Freeze/Winterizing Kit

Don't forget this 2-step process to winterize your sprinkler system! 1️⃣ Turn off the water supply valve, typically found in your front yard. The valve, By Quadvest, LP