The Quaternary Valve is a kind of manifold valve where due to its structure the four channels from the valves all join at one point and connect to the common port (the central port of the product in the above picture). The lengths of the four channels are the same and the flow rate of each is almost identical. This structure is designed to maintain a high accuracy of the mixing ratio of multiple liquids. The product is often used to mix several kinds of eluant gradually in a low pressure gradient unit in a liquid chromatograph. In addition, it can be used to mix chemical liquids accurately or to dispense equal amounts of one kind of liquid.
Since a high processing accuracy is required at the junction of four channels, the manifold bases of almost all of the conventional models, including those of other manufacturers, are manufactured by machining, which results in an increased cost. With advanced moulding techniques, TAKASAGO has achieved the moulding of this junction in PEEK, and we are happy to provide you with our Quaternary Valve at prices conventional models cannot match.