A spray cap (20; 300; 400; 600) for a spray can (22) has a body comprising: a sidewall (140) having a lower portion for mounting to a body of the spray can; and a button (36). The button has: an upper surface (164) for user engagement; a downwardly projecting sleeve (38) for receiving an outlet stem (240) of the can; and a forwardly-open compartment (42). An insert (34; 302) is within the compartment. A nozzle member (32) is mounted across the compartment to contain the insert within the compartment.

A nozzle for use in dispensing a fluid, such as water or a foaming agent to extinguish a fire, comprises a longitudinal body that comprises a plurality of helical shaped cam paths. The cam paths allow the operator of the nozzle to adjust a flow setting for the nozzle by moving a flow adjustment mechanism that is operatively associated with the cam paths.

A sanitary fitted element (1) which can be inserted into the water outlet of a sanitary outlet fitting and is held releasably there. A characteristic feature of the fitted element (1) according to the invention is that said fitted element has an adjusting device for changing the clear sectional area of flow of the fitted element (1) and/or the discharge rate, which adjusting device is actuable via at least one control element (8) which is arranged actuably on the inflow side of the fitted element (1) and/or on the outflow side thereof. The fitted element (1) according to the invention can be used in a versatile manner in order to reduce the outlay on production and stock.

A sanitary fitted element (1) which can be inserted into the water outlet of a sanitary outlet fitting and is held releasably there. A characteristic feature of the fitted element (1) according to the invention is that said fitted element has an adjusting device for changing the clear sectional area of flow of the fitted element (1) and/or the discharge rate, which adjusting device is actuable via at least one control element (8) which is arranged actuably on the inflow side of the fitted element (1) and/or on the outflow side thereof. The fitted element (1) according to the invention can be used in a versatile manner in order to reduce the outlay on production and stock.

A spray cap (20; 300; 400; 600) for a spray can (22) has a body comprising: a sidewall (140) having a lower portion for mounting to a body of the spray can; and a button (36). The button has: an upper surface (164) for user engagement; a downwardly projecting sleeve (38) for receiving an outlet stem (240) of the can; and a forwardly-open compartment (42). An insert (34; 302) is within the compartment. A nozzle member (32) is mounted across the compartment to contain the insert within the compartment.

A nozzle structure with forward and reverse water sealing, comprising a nozzle head, a cover, and a plurality of sealing rings. The two ends of the nozzle head are the water-filling end and the spraying end respectively, a drainage aperture is pierced on the side of the spraying end, a guide cone is provided at the upper end, and a stopper is installed convexly on the outer periphery at the end portion of spraying end. The cover is sleeved on the nozzle head, which can rotate forwardly and reversely. The sealing rings are set on the nozzle head and the cover respectively. When the cover is rotated to the forward or reverse end, both ends of the cover can be sealed by the sealing rings to seal off the water.