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English 
Parker’s Coded Quick Coupling Series 21 is an industrial coupling system developed on the basis of series 21 with above-average flow rate for liquid and gaseous media.
This coupling system is developed for single-hand operation. The mechanical coding of the coupling and plug offers a guarantee for avoiding mix-ups between media when coupling, which is complemented by the color coding of the anodized sleeves. A double shut-off version is available on request.
Markets:
– Machinery Construction
– Life Science
– Process
– Aerospace
Features/Benefits:
– No mix-ups between media due to the color and mechanical coding of coupling and plug
– Above-average flow rate
– Single-hand operation for easy and fast connection
Applications:
– Laboratory equipment
– Control panels
– Calibration systems
– Portable analyzers
– Gas chromatographs
– Micro-contamination devices
