Needle Valve

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    Hayward Needle Valves are used for extremely accurate metering of fluids from full flow down to a few drops per minute. Thread x Thread Ultra precise control Corrosion resistant

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    Control the flow of your calcium reactor, drip line and feed lines accurately with the Vertex Precision Needle Valve. Quality grey PVC for durabiliy Teflon seal for leak-free operation 1/4" Push connect fittings Large black polyester knob to control flow easily


    …market that we could find. Instead of traditional needle valves controlling the flow rate, the CarbonDoser uses an electric solenoid that will open and close within a fraction of a second producing a single bubble. Since there is no needle valve, the CarbonDoser's bubble rate will never change. You…

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