Kuhnke 47.220 Pneumatic Two Way Flow Restrictor.
The Kuhnke 47.220 flow restrictor is designed for optimum compatibility between spindle rotation and flow characteristics; as such a very fine degree of flow control can be expected. The main body of the valve is constructed of brass, the needle of stainless steel. The valve can be directly mounted, or panel mounted through an 8mm diameter hole which is secured using the fixing nut provided.
The valve has a long flow control adjustment stem with a knurled knob to assist the precision setting of the device. A setting lock nut can be used to prevent tampering once the desired flow has been set. A screwdriver slot can be utilised if the device is used with a protective cover (part number 47.266). Protective covers are used to prevent tampering, or to protect the long stem from accidental damage. Connection ports are M5 threaded.
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