
This is typical cheap Chinese junk. The two I've used so far don't seal. No clamps could stop the constant leaks. In addition, there is a warning on the packaging stating that overtightening may cause the product to tear and fail. Talk about CYA. I hope PTFE tape can fix them; If not, then I have a real problem. As they were sold as a pack of five I'm sticking with them, including three more that I dare not use let alone buy a replacement. Update: PTFE tape fixed a valve. Tightening another managed to eliminate leaks. I bought Made in USA to replace three others.

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