Improved quick coupling adapted for application with the male element under pressure and allowing for a bidirectional unobstructed flow.

摘要

There is disclosed an improved quick coupling adapted for application with the coupling male element under pressure and allowing for a bidirectional unobstructed flow. The quick coupling comprises a male component (1), under pressure,and a female component (2),which is slidingly inserted in a ring nut coaxial thereto and locked in a fixed position. Both the coupling components are provided with a mushroom shaped gate or shutter element (4, 27),biassed by a spring (5, 26),and have a suitably shaped body at their inner and/or outer surfaces. With the female component,moreover,an inner body (12),also biassed by a spring (10) and encompassed on its inside and outside,by corresponding sliding elements (14, 22) and two ball rings (23, 24) cooperates,the balls being adapted for engaging in corresponding grooves (6, 8') formed on the coupling male component,on the ring nut and on the sliding element.