Abstract: A pneumatic, syphon type apparatus particularly advantageous for dispensing and applying viscous materials in a spray form features, in a preferred embodiment, a throwaway eductor assembly which slip fits to the delivery end of a tubular structure adapted for connection to and delivery therethrough of air or other gaseous fluid under pressure. The eductor assembly comprises a tubular adapter extended at one end by an eductor tube and at the other by an applied nozzle and a syphon tube connected therewith to open to its interior adjacent the nozzle and at right angles thereto. In use of the apparatus the syphon tube is introduced to a body of the material to be dispensed as the end of the adapter including the nozzle is releasably coupled to the discharge end of the tube which is connected to a source of air under pressure.