That's about half the price of a quality brand, but because of the gasket (it's not really a gasket, it's a hard piece of plastic) I rate it as low. Apart from the gasket the overall quality is good. The gasket will seal when tightened, but as it is stiff (not rubbery/elastic) it will cause the valve to come loose easily. It is easy to repair, replacing this gasket with a rubber one, but then it increases the cost, so the price does not become so attractive.
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