Patent ID: 9566461
Date: 2017-02-14
CPC Classifications: A62C

Claim:
1. A nozzle for delivering a fire-fighting fluid to a corrosive environment, the nozzle comprising: a nozzle body defining a central axis and an exit port; a support member extending from the nozzle body; a diffuser disposed on the support member about the central axis to face the exit port, the diffuser having a splitter portion and a deflector portion that together define an imperforated impact surface disposed to receive the fire-fighting fluid exiting the exit port, the splitter portion having a first end with an apex facing the exit port and an opposing second end with a base defining an outer diameter of the splitter, the deflector portion having a central portion disposed orthogonally to the central axis and surrounded by a peripheral portion disposed at an angle relative to the central portion, the peripheral portion having a peripheral edge defining an outer diameter of the deflector, the impact surface extending from the apex to the peripheral edge; and a coating disposed to cover at least the nozzle body, the support member, and the diffuser to inhibit functionally-debilitating corrosion of the coated impact surface and maintain the impact surface in a serviceable condition when the nozzle is exposed to the corrosive environment for a period of protection, wherein the splitter outer diameter is one third to two thirds of the deflector outer diameter, and the deflector peripheral edge is rounded in it direction generally parallel to the central axis, wherein the period of protection for disposing the nozzle in the corrosive environment is at least three months, wherein the coating comprises at least one of a coating selected from the group consisting of polytetrafluoroethylene (PTFE), ethylene-chlorotrifluoroethylene (ECTFE), ethylene-tetrafluoroethylene (ETFE), polyvinylidene fluoride (PVDF), perfluoralkoxy (PFA), and fluorinated ethylene propylene (FEP), wherein the corrosive environment includes one or more of: (a) any or all of the following: acids, such as HCI, HF, H the extremely corrosive environment includes at least one of sulfuric, hydrochloric, nitric, or hydrofluoric acids.