Discharge valve assembly for trigger sprayer

Details Discharge valve assembly for trigger sprayer Discharge valve assembly for trigger sprayer

B - Operations, Transporting

05

B

B05B 11/00 (2006.01) B65D 47/34 (2006.01)

Patent

CA 2310339

A trigger actuated pump sprayer has a discharge valve assembly located in the discharge barrel of the pump body which includes a filler for reducing the volume of the discharge barrel thereby displacing the air therein whereupon the strokes-to-prime ratio of the pump required during initial pumping for discharging pressurized liquid along the barrel and through the orifice at a nozzle end thereof, is improved. Also the discharge valve assembly may be shiftable along the length of the discharge barrel in response to pressure and return strokes during pumping, a downstream end of the assembly engaging a spin mechanics element at the nozzle end to therewith define a variable volume suction chamber in communication with the discharge orifice for withdrawing product therefrom during each pumping suction stroke.

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