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An adjustable nozzle comprising a nozzle body with an inlet, an outlet and a flow chamber having a smooth bore extending between the inlet and the outlet. An elastic water impervious material is in fluid communication with the inlet and is tapered and is able to expand due to its elasticity. An adju

An adjustable nozzle comprising a nozzle body with an inlet, an outlet and a flow chamber having a smooth bore extending between the inlet and the outlet. An elastic water impervious material is in fluid communication with the inlet and is tapered and is able to expand due to its elasticity. An adjustable non-rusting member connected to the nozzle body expands or constricts to either increase or decrease the inner diameter of the nozzle body to adjust the flow rate through the nozzle.

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1. An adjustable fluid nozzle, comprising: a longitudinal nozzle body extending from an inlet to an outlet, such that said nozzle body defines a central axis, said nozzle body configured to receive pressurized fluid at said inlet and discharge the pressurized fluid at said outlet;a flexible membrane

1. An adjustable fluid nozzle, comprising: a longitudinal nozzle body extending from an inlet to an outlet, such that said nozzle body defines a central axis, said nozzle body configured to receive pressurized fluid at said inlet and discharge the pressurized fluid at said outlet;a flexible membrane comprised of an elastic water impervious material disposed within said longitudinal nozzle body and having an upstream end in fluid communication with said inlet of said nozzle body and a downstream end in fluid communication with said outlet of said nozzle body, said flexible membrane having a tapered profile and adapted to expand when said nozzle body receives the pressurized fluid, such that a downstream portion of said flexible membrane has a smaller diameter as compared to an upstream portion of said flexible membrane when said nozzle body is devoid of the pressurized fluid, said downstream portion being expandable when said nozzle body receives the pressurized fluid at said water inlet and being contractable when said nozzle body is devoid of the pressurized fluid, wherein said flexible membrane has a smooth inner surface;wherein said nozzle body comprises a plurality of adjacent springy, non-rusting, members extending along the longitudinal central axis that contact said elastic water impervious material when said nozzle body receives pressurized fluid, said springy members having spaces therebetween and devoid of separate sealing elements connecting said springy members, said springy members adapted to form a tapered portion of said nozzle body, said tapered portion having a taper that matches the taper of said flexible membrane. 2. The adjustable nozzle of claim 1, wherein said adjacent, springy, non-rusting members comprise a plurality of triangular sections. 3. The adjustable nozzle of claim 1, wherein said adjacent springy, non-rusting members contact an exterior of said elastic water impervious material. 4. An adjustable fluid nozzle, comprising: a nozzle body having a longitudinal central axis, said body having an inlet having an inner diameter and an outlet and;a flow chamber between the inlet and the outlet;an elastic water impervious material having an upstream end in fluid communication with said inlet of said nozzle body and a downstream end in fluid communication with said outlet of said nozzle body, said elastic water impervious material having a taper, said elastic water impervious material able to expand due to its elasticity when said nozzle body receives pressurized fluid;a plurality of springy, non-rusting members adjacent to one another that define a tapered bore that has a taper that matches the taper of said elastic water impermeable material, said plurality of springy, non-rusting members in contact with at least a portion of said elastic water impervious material when said nozzle body receives the pressurized fluid, said plurality of springy, non-rusting members defining a plurality of gaps between one another; andan adjustable non-rusting member connected to said nozzle body that is adapted to expand or constrict a discharge of fluid when said nozzle body is adjusted in a fashion to either increase or decrease its inner diameter to enable the nozzle to operate as a selectable smooth bore. 5. The adjustable nozzle of claim 4, wherein the elastic water impervious material comprises rubber and said nozzle further comprises a member adapted for connection to a water supply. 6. The adjustable nozzle of claim 4, wherein said elastic water impervious material extends substantially from said inlet to said outlet of said nozzle body. 7. The adjustable nozzle of claim 4, wherein the plurality of springy, non-rusting members comprise adjacent triangular sections that contact an exterior portion of said elastic water impervious material. 8. The adjustable nozzle of claim 4, wherein said nozzle maintains a constant operating pressure despite an increase in gallons per minute from a fluid supply. 9. The adjustable nozzle of claim 4, wherein said plurality of springy, non-rusting members and said elastic water impervious material form a throttle assembly. 10. The adjustable nozzle of claim 4, wherein said fluid is supplied by a fluid source selected from the group consisting of a fire hydrant, a fire truck, and a submersible pump. 11. The adjustable nozzle of claim 4, wherein said nozzle further comprises a tip having an orifice and said tip is adjustable to vary the area of the tip's orifice. 12. The adjustable nozzle of claim 4, wherein said fluid comprises water. 13. The adjustable nozzle of claim 4, wherein said plurality of adjacent, springy, non-rusting members have spaces therebetween and are devoid of separate sealing elements connecting said adjacent, springy, non-rusting members. 14. An adjustable fluid nozzle comprising: a nozzle body having a longitudinal central axis, said body having an inlet having an inner diameter and an outlet and further comprises a plurality of springy, non-rusting members that define a tapered bore,a fluid flow chamber between the inlet and the outlet; an elastic water impervious material in fluid communication with said inlet and in contact with said plurality of springy, non-rusting members, said elastic water impervious material being tapered and able to expand due to its elasticity; wherein said springy, non-rusting members extend along the longitudinal central axis and contact said elastic water impervious material when said nozzle body receives pressurized fluid, said springy members defining a plurality of gaps between one another;an adjustable non-rusting member connected to said nozzle body that is adapted to expand or constrict a discharge of fluid when said nozzle body is adjusted in a fashion to either increase or decrease its inner diameter to enable the nozzle to operate as a selectable smooth bore; anda member operably associated with said nozzle that is adapted for connection to a fluid supply. 15. The adjustable nozzle of claim 14, wherein said springy, non-rusting members comprise adjacent triangular sections that are movable to reduce the inner diameter of said nozzle body, said triangular sections comprised of stainless steel. 16. The adjustable nozzle of claim 14, wherein said springy, non-rusting members have spaces therebetween and are devoid of separate sealing elements connecting them. 17. The adjustable nozzle of claim 14, wherein the elastic water impervious material comprises rubber. 18. The adjustable nozzle of claim 14, wherein said elastic water impervious material extends from said inlet to said outlet of said nozzle body. 19. The adjustable nozzle of claim 14, wherein said nozzle body comprises a cylindrical body portion to which said adjustable non-rusting member is coupled, and a tapered body portion that extends from said cylindrical body portion to said outlet. 20. The adjustable nozzle of claim 14, wherein said nozzle maintains a constant operating pressure despite an increase in gallons per minute from a water supply.