Ordered two and both have the same problem. I was planning to use them at the foot of the sanitary yard hydrants. Unfortunately the barb fitting is loosened (small) to seal the 1" 200psi black well pipe. it just falls out with a few mm clearance around the spikes. The notch is also too big for 1" HDPE/PEX. I keep it with me in case I come across a whistle that might fit. 5 stars for the product. The ID says 1 star for the seller description, not 1 inch notches. .
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