Before revision: KF/QF 250 px|A KF-25 tee, o-ring, and clamp The ISO standard quick release flange is known by the names Quick Flange (QF), Klein Flansche (KF, German which translates to "Small flange" in English) or NW, sometimes also as DN .
After revision: KF/QF 250 px|A KF-25 tee, o-ring, and clamp The ISO standard quick release flange is known by the names Quick Flange (QF), Kleinflansch (KF, German which translates to "Small flange" in English) .