A liquid dispensing device (100), in particular for watering animals, in particular laboratory animals, such as small rodents or the like, said device (100) comprising a main body (101) which defines a longitudinal cavity (1011) for the passage of watering liquids, said longitudinal cavity (1011) being in communication with the outside through a delivery (1002) and a discharge (1001) for introducing said liquids in said longitudinal cavity (1011) and discharging said liquids from said longitudinal cavity (1011) respectively, a valve body (105) and an annular shape elastic sealing element (120) arranged inside said longitudinal cavity (1011), said valve body (105) comprising a stem with a first portion (106) which extends through said annular sealing element (120) and a flange-shaped head (107), wherein said flange-shaped head (107) is kept pressed against said annular sealing element (120) by means of an elastic thrust element (130), and wherein said stem can switch between a first closing position, in which the flow of said liquid downstream of said annular sealing element (120) is prevented by said annular sealing element (120), and a second opening position, in which the flow of said liquids downstream of said annular sealing element (120) is possible.

A liquid dispensing device (100), in particular for watering animals, in particular laboratory animals, such as small rodents or the like, said device (100) comprising a main body (101) which defines a longitudinal cavity (1011) for the passage of watering liquids, said longitudinal cavity (1011) being in communication with the outside through a delivery (1002) and a discharge (1001) for introducing said liquids in said longitudinal cavity (1011) and discharging said liquids from said longitudinal cavity (1011) respectively, a valve body (105) and an annular shape elastic sealing element (120) arranged inside said longitudinal cavity (1011), said valve body (105) comprising a stem with a first portion (106) which extends through said annular sealing element (120) and a flange-shaped head (107), wherein said flange-shaped head (107) is kept pressed against said annular sealing element (120) by means of an elastic thrust element (130), and wherein said stem can switch between a first closing position, in which the flow of said liquid downstream of said annular sealing element (120) is prevented by said annular sealing element (120), and a second opening position, in which the flow of said liquids downstream of said annular sealing element (120) is possible.

An intermittent air blow gun (10a) has a switching valve (26) including a switching-valve case (27) and a valve assembly (31), and the valve assembly (31) includes: a valve body (53) configured to open and close a valve hole; a small-diameter piston (33) partitioning so as to form a small-diameter pilot chamber (34); and a large-diameter piston (37) partitioning so as to form a large-diameter pilot chamber (38). The valve body (53) is switched to a closed position when air discharged from an inside of the switching-valve case (27) to an air discharge section (24) is supplied to the large-diameter pilot chamber (38) through a bypass flow path (77), and the valve body (53) is switched to an open position when air is exhausted.

An intermittent air blow gun (10a) has a switching valve (26) including a switching-valve case (27) and a valve assembly (31), and the valve assembly (31) includes: a valve body (53) configured to open and close a valve hole; a small-diameter piston (33) partitioning so as to form a small-diameter pilot chamber (34); and a large-diameter piston (37) partitioning so as to form a large-diameter pilot chamber (38). The valve body (53) is switched to a closed position when air discharged from an inside of the switching-valve case (27) to an air discharge section (24) is supplied to the large-diameter pilot chamber (38) through a bypass flow path (77), and the valve body (53) is switched to an open position when air is exhausted.

Provided is a safety valve (10) comprising a body (12) which defines an incoming fluid passage (14) and a return fluid passage (20). The incoming fluid passage (14) generally enables a fluid to pass from a fluid reservoir (18) through the body (12) to the tool head (16). The return fluid passage (20) generally enables a fluid to return from the tool head (16) through the body back to the fluid reservoir (18). The body (12) further comprises a diverter (22) which is displaceable between an active position and an inactive position. When the diverter (22) is in the active position, the diverter (22) redirects the fluid via a shunting passage (24) from the incoming fluid passage (14) to the return passage (20) to prevent operation of the tool head (16).

A refrigerator includes a main body, a dispenser configured to supply water to the outside of the main body, a water supply flow path connecting the dispenser to a water source; and a valve assembly disposed on the water supply flow path, wherein the valve assembly comprises an elastic member having an outlet whose diameter is reduced by an elastic force, when water is no longer supplied to the valve assembly, so that water remaining in the inside of the water supply flow path is kept by the surface tension of the water.

A refrigerator includes a main body, a dispenser configured to supply water to the outside of the main body, a water supply flow path connecting the dispenser to a water source; and a valve assembly disposed on the water supply flow path, wherein the valve assembly comprises an elastic member having an outlet whose diameter is reduced by an elastic force, when water is no longer supplied to the valve assembly, so that water remaining in the inside of the water supply flow path is kept by the surface tension of the water.

A method for manufacturing a self-sealing valve for an inflatable body such as a toy balloon is disclosed. The method comprises immersing a mold in an immersion bath of an elastomeric material in liquid form and heating the mold in a heating device until a hollow tube element of an elastomeric material with a proximal end, a distal end, a cylindrical portion at the proximal end, a flat portion at the distal end having two flat sides, and a transition portion between the cylindrical portion and the flat portion is formed. The cylindrical portion is open at the proximal end and the flat portion is closed at the distal end with an opening on at least one of its flat sides. The valve is inserted in an inflatable body with the flat and transition portions of the hollow tube element located inside the inflatable body.

A method for manufacturing a self-sealing valve for an inflatable body such as a toy balloon is disclosed. The method comprises immersing a mold in an immersion bath of an elastomeric material in liquid form and heating the mold in a heating device until a hollow tube element of an elastomeric material with a proximal end, a distal end, a cylindrical portion at the proximal end, a flat portion at the distal end having two flat sides, and a transition portion between the cylindrical portion and the flat portion is formed. The cylindrical portion is open at the proximal end and the flat portion is closed at the distal end with an opening on at least one of its flat sides. The valve is inserted in an inflatable body with the flat and transition portions of the hollow tube element located inside the inflatable body.

A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.