The technical field is that of simultaneous dispensing of viscous materials. Many compositions comprise viscous components which must be kept separate until they are used. Known methods of application of separate components do not guarantee proper ratios. This invention solves this problem by presenting a single aerosol container (4) having a multi-valve body (8) wherein the valves (10, 12) are activated by a single actuator (26) and the viscous materials are kept separate until used. The system (2) may use multiple collapsible bags (16), a barrier liner (42), a dip tube (46), and a spray-any-direction valve (50) having an omnidirectional attachment (60) which contains a check valve container (122) made up of a constricted lower end (132), a top surface (134), a lateral opening (136), and a check ball (138) for opening and closing passageways.