F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K15/00—Check valves
F16K15/02—Check valves with guided rigid valve members
F16K15/08—Check valves with guided rigid valve members shaped as rings
F16K15/10—Check valves with guided rigid valve members shaped as rings integral with, or rigidly fixed to, a common valve plate
Dispositif d'encaissement a echappement pour publiphones et autres appareils a prepaiement susceptibles de recevoir plusieurs types differents de pieces de monnaie