Each of branch pipes has an internal space into which an atmosphere flows from a main pipe. A downstream damper is provided on the downstream side of an upstream damper in each of the branch pipes, and opens/closes the branch pipe. An upstream switching member switches a state of an upstream space between a state where the upstream space permits an inflow of an external atmosphere and a state where the upstream space prohibits the inflow of the external atmosphere. A downstream switching member switches a state of a downstream space between a state where the downstream space permits an inflow of the external atmosphere and a state where the downstream space prohibits the inflow of the external atmosphere.

A dispensing apparatus includes: a storage unit including a first flow path, a second flow path, and a third flow path; and a movable member including a first part, and a second part. The first part and the second part are formed in a long shape, and the second part is formed such that a cross-section crossing the longitudinal direction is smaller than that of the first part.

A dispensing system can include a material delivery assembly that includes a tubular reservoir with a tubular extension, where the tubular reservoir includes a longitudinal axis; a nozzle body, where the tubular extension fluidly couples the tubular reservoir to the nozzle body; and a rotor coupling that operatively couples to the material delivery assembly for rotation of the tubular reservoir about its longitudinal axis.

A jetting dispensing module includes a module body with a fluid bore. A nozzle element is coupled to the module body. The nozzle element includes a fluid reservoir communicating with the fluid bore of the module body and a dispensing passage. A guide element includes a main guide bore and an internal fluid space in fluid communication with the fluid bore. A plunger is mounted for reciprocating movement within the module body. The plunger extends through the main guide bore and into the internal fluid space, and includes a distal end moveable between a fully retracted position spaced from the fluid reservoir and a fully extended position within the fluid reservoir but out of contact with the nozzle element.

A valve type nozzle controls discharge of liquid by opening and closing an discharge port by a valve element, the discharge port being configured to discharge the liquid, and the valve element being formed movably by applying a predetermined voltage to a piezoelectric element, whereby when the predetermined voltage is applied to the piezoelectric element, the valve element moves in a direction where the moving mechanism opens the discharge port when the piezoelectric element extends. This allows the liquid to be discharged. Further, when the application of the voltage to the piezoelectric element is released, the moving mechanism returns to an original shape, by which the valve element closes the discharge port is closed to prevent the discharge of the liquid.

A dispensing system can include a material delivery assembly that includes a tubular reservoir with a tubular extension, where the tubular reservoir includes a longitudinal axis; a nozzle body, where the tubular extension fluidly couples the tubular reservoir to the nozzle body; and a rotor coupling that operatively couples to the material delivery assembly for rotation of the tubular reservoir about its longitudinal axis.

A liquid agent application apparatus includes an application nozzle that is movable up and down and in a horizontal plane direction with respect to a board, an application valve that switch between a first state in which supply of a liquid agent to the application nozzle is performed and a second state in which the supply of the liquid agent to the application nozzle is stopped, and a control device that controls these. The control device performs control such that the application nozzle is lowered, the application valve is switched to the second state by standing by a predetermined time after switching the application valve to the first state at a predetermined supply start timing, and the application nozzle is raised after a timing at which a tip end of the application nozzle reaches a lowering end and the application valve is switched to the second state.

A reciprocating glue dispenser dispensing switch includes a switching device main body, a needle holding base, a sliding wear-resistant plate, and a driving device. The switching device main body is equipped with a double liquid inlet, the needle holding base is equipped with a mixed glue outlet, the sliding wear-resistant plate is installed between the switching device main body and the needle holding base, and the sliding wear-resistant plate is equipped with a sliding wear-resistant plate opening. The driving device is utilized to move the sliding wear-resistant plate. A mixed double-liquid glue passes through the double liquid inlet, the sliding wear-resistant plate opening and the glue outlet to dispense a mixed double-liquid glue while the double liquid inlet, the sliding wear-resistant plate opening and the glue outlet are overlapped. In addition, a double liquid dispensing equipment is also disclosed herein.

A system for finishing surfaces with a finishing material includes a handle assembly with proximal and distal ends. A material reservoir is mounted on the handle distal and includes an inlet and an outlet. A material applicator tool is mounted on the reservoir and receives material from the reservoir outlet. A discharge mechanism includes an extendable-retractable component or linear actuator connected to the reservoir for discharging or reloading material. Multiple embodiments utilizing different linear actuators are disclosed. An alternative embodiment includes a push-to-open valve mechanism. Additional embodiments include an adjustment mechanism on the push-to-open valve mechanism accommodating adjustment of flow of finishing compound when the push-to-open valve is engaged.

A dispensing unit for an adhesive or other viscous liquid includes one or more dispensing nozzles for delivery of the adhesive to a desired surface. The dispensing nozzles each include one or more dispensing ports that are in fluid communication with a nozzle body recess defined through a nozzle body of the dispensing nozzle. Adhesive that is supplied to the nozzle body recess may be thrown laterally from the dispensing nozzle via the dispensing ports. Each of the dispensing ports may be positioned between a pair of projections. The projections protect the dispensing port from breaking due to contact with the surface on which the adhesive is applied or contact with another exterior object.