| 摘要 |
A smooth actuating, non-throttling dispensing pump with a low force to actuate is provided. The pump will dispense a fluid at a pressure and flow velocity sufficient to allow the fluid to exit through the actuator in a fine particle spray. This action occurs when the actuator, depressed by the finger, moves a displacement piston downward pressurizing the fluid in the fluid chamber. When a predetermined pressure is reached, seals between the piston and stem open permitting the pressurized fluid to exit the fluid chamber through the actuator. The relationship of the frictional and spring forces plus the pressure acting on the piston and stem determines when and how the fluid is dispensed.
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