Applicator for the delivery of solutions and materials in a pressurized fluid system

An applicator for dispensing at least one additive in a fluid system comprising:

• a vessel having a first portion for receiving fluid under pressure, and a second portion for mixing and dispensing said at least one additive;
• at least one cartridge in said first portion of said vessel, and in fluid communication with said fluid, said at least one cartridge including an outer shell having at least one aperture for fluid ingress, and a collapsible, fluid-tight liner containing said at least one additive, said at least one cartridge collapsively responsive to an increase in externally applied pressure from said fluid, such that when said at least one cartridge is subjected to said externally applied pressure, said at least one cartridge compresses, dispensing said at least one additive from said first portion of said vessel to said second portion of said vessel;
• a primary fluid channel in said second portion of said vessel in fluid communication with said at least one cartridge and said fluid, receiving said at least one additive upon compression of said at least one cartridge, combining said fluid and said at least one additive;
• a variable switch or valve for regulating the introduction of said at least one additive to said primary fluid channel allowing an operator to mix different additives in various amounts when more than one additive is present;
• a variable switch or valve for regulating egress fluid from said vessel;
• a variable switch or valve for regulating ingress fluid pressure on said at least one cartridge;
• and
• a nozzle in fluid communication with said primary fluid channel receiving and dispensing said combined fluid and said at least one additive.