Control your carbon dioxide injection levels with this professional CO2 needle valve. Constructed of a precision-machined control valve in a high-impact plastic housing. Independent, inline design lets you place the valve near your bubble counter (not included) for easy, exact adjustment of carbon dioxide injection. Can be set to a stable flow rate as low as four bubbles per minute. Features a barbed inlet hose with lock nut for secure attachment to any silicon tubing (not included) that also permits complete shutoff of gas flow. Includes suction cups for mounting. Measures 1-1/2" wide x 2-3/4" long.
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