YXQ 1Inch Irrigation Venturi,Fertilizer Mixer Injectors Tube Agriculture Tool Plastic Black for Outdoor Garden Farm Lawn 2Pcs

Although these have British threads you can thread FIP couplers onto it with thread tape and it doesn't leak. This is exactly what I needed to hook ozone to my homebuilt cold plunge. It has the newer, cheaper style of "one way" valve and not the ball and spring that I'd have preferred. But honestly is seems like most companies are phasing that style out.

This did not siphon the plant food as advertised. I tried both directions, but nothing.

Su cslidad,muy buena

You need to push a lot of water volume to get the valve to open. My drip tape was not enough. My wobblers worked.

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Buen producto f I mciona bien