FIELD: mechanical engineering. SUBSTANCE: trigger pump sprayer is made of thermoplastic resin materials. It has starting device 17 mounted for turning and secured with its upper end to body 13. Starting device is secured with active hinge to piston 16 which moves inside pump cylinder and is shifted by spring 18 to definite rear position. Spring is L- shaped. It is attached to body by means of its lower lug for pump cylinder installation. Single valve element 15 is positioned on rear side of pump cylinder. It includes single-pass valves for spraying of product and for repeated feed of product to pump chamber. EFFECT: enhanced reliability, simplified assembly. 20 cl, 19 dwg
