A device for dispensing a fluid, which includes: a feed pipe, a dispensing pipe arranged in order to convey a fluid in a dispensing direction, a deformable pouch, a feed valve, which, in an open state, allows fluid to pass from the feed pipe to the inside of the pouch, and, in a closed state, does not allow this, and a dispensing valve, which, in an open state, allows fluid to pass from the inside of the pouch to the dispensing pipe, and, in a closed state, does not allow this, wherein the dispensing valve is held in the device by tightening between inner walls of the dispensing pipe.

A trigger-type pump dispenser includes a housing 11 with a front cylinder part 11A and a rear inverted-L-shaped grip part 11B integrally formed, a nozzle base 12 attached to the housing 11 and having a front nozzle part 11C mounted thereon, a piston structure configured of a hollow-shaped piston 15 and a hollow-shaped piston shaft 16 and sliding inside the cylinder part, a spring 17 which presses the piston structure 14 upward, a trigger 13 positioned above the housing 11, having a front tip rotatably mounted on the housing 11, and having a mid part where a tip of the hollow-shaped piston shaft 16 abuts, and a valve rod 18 disposed at a center part of the cylinder part 11A.

Flairosol dispensing devices are presented. They utilize a combination of Flair technology, precompression valves and aerosol like pressurization of the dispensed liquid. An exemplary device has a main body comprising a pressure chamber, the latter being provided with a pressure piston and a pressure spring, a piston and a piston chamber which draws liquid from a container, and fills the pressure chamber with that liquid as a user operates a trigger in various compression and release strokes. The piston chamber has both an inlet valve and an outlet valve, which serve to prevent backflow. A dome valve can be provided near the outlet channel at the top of the dispensing head, such that once its pressure is exceeded by the liquid, it opens and allows for a spray. Alternatively, in an activated embodiment, the dome valve is locked unless opened by a user.

Device for dispensing a fluid, comprising: a feed pipe, a dispensing pipe arranged in order to convey a fluid in a dispensing direction, a deformable pouch, a feed valve, which, in an open state, allows fluid to pass from the feed pipe to the inside of the pouch, and, in a closed state, does not allow this, and a dispensing valve, which, in an open state, allows fluid to pass from the inside of the pouch to the dispensing pipe, and, in a closed state, does not allow this, wherein the dispensing valve is held in the device by tightening between inner walls of the dispensing pipe.

A foam pump including a housing and a piston that reciprocates within the housing is disclosed herein. The piston has a hollow portion and an orifice through the wall of the piston. A first seal located proximate the upper end of the piston provides a seal between the piston and the housing. A liquid inlet is located in the side wall of the housing at a point lower than the top of the piston. A one-way liquid inlet valve is located proximate the liquid inlet and a one-way liquid outlet valve is located prior to the liquid outlet. A charge chamber is defined at least in part by the liquid inlet valve, the liquid outlet valve, a wall of the piston and a wall of the housing.

A foamer dispenser includes a hollow stem, an air piston configured to pressurize and pump air, and a tubular guide that is coupled integrally to the air piston, that defines an airway for air supply between the hollow stem and the tubular guide, that holds the hollow stem slidably, and that is configured to come out of abutment with the flange in response to sliding of the hollow stem, thereby opening the airway is provided. The flange is provided with: an outer annular wall protruding upward from an outer edge of the flange; and a guide rib located on an outer side of the tubular guide in the radial direction and configured to be guided by the tubular guide during sliding of the hollow stem.

A metering pump for integration into a container includes a pump housing having a pump chamber, a pump inlet, and a pump outlet. The pump chamber is defined by a pump chamber base and an elastically deformable pump dome. The pump housing is composed of at least a first pump housing portion and a second pump housing portion. The pump dome is a part of the first pump housing portion and the pump chamber base is a part of the second pump housing portion. In one example, a container includes the metering pump and an associated product dispenser.