Various examples are provided related to low pressure delivery, e.g., less than 250 psi at the point of application, of plural component system from unpressurized parts A and B material supplies. In one example, a system includes a polyurethane spray foam (SPF) raw material supply including parts A and B and a fluid handling system that can deliver the SPF raw material at low pressure to a metal spray gun in metered amounts through separate material fluid paths/conduits via a heated hose length and a whip hose. The fluid handling system can also deliver air at low pressure to the spray gun through separate air stream paths so that the air is communicated to the part A and B material conduits forward of the part A and B material input locations, where they are supplied separately to a mixing nozzle that is engaged at an end of the spray gun.

A nebulizer comprises a housing, a closed pressure system, at least one pressure relief mechanism and a nebulization mechanism. The housing comprises a nozzle, and the nozzle comprises an outlet portion and an inlet portion communicated with a pressurized gas source. The closed pressure system comprises at least one gas inlet and a gas outlet. The at least one pressure relief mechanism is disposed on the at least one gas inlet. The nebulization mechanism is capable of moving to a nebulization position. An interior pressure in the closed pressure system is changed by the at least one pressure relief mechanism to control the nebulization mechanism for nebulization.

Pneumatic spray guns (10) for applying sprayable materials (M) to various surfaces are disclosed. During use of the pneumatic spray guns (10), a tube (T) of flowable texture material (M) to be sprayed is loaded into a pressure canister (12) of the spray gun (10). Pressurized air is fed to the tube (T) of material (M) to be sprayed and is also fed to a spray nozzle region of the gun (10) to contact the material (M) after it has exited the tube (T) in order to provide a desired spray pattern (S). The pressure applied to the pressure canister (12) and/or the pressure applied to the spray nozzle (20) may be varied in order to control the spray pattern (S).

A binary nozzle for atomizing a mixture of agent to be sprayed and spray air is connected to at least one supply duct via which the mixture or the agent to be sprayed can be supplied to the binary nozzle, wherein a valve is arranged between this supply duct and a nozzle outlet of the binary nozzle. A corresponding spray head and also a method for atomizing a mixture of agent to be sprayed and spray air uses a binary nozzle. The binary nozzle includes a nozzle body formed in a single piece and including the nozzle outlet, wherein a movable assembly of the valve is fastened to the nozzle body by a fastening element and/or held tight against the nozzle body by a spring device.

A chemical liquid spraying apparatus suitable for disinfecting and sterilizing a large space, comprising: a case equipped with a pressurized chemical liquid tank and a compressor; an extension connecting pipe including a compressed air pipe through which a part of compressed air supplied from the compressor flows, and a pressurized chemical liquid pipe through which a chemical liquid pressurized by a rest part of the compressed air supplied from the compressor flows from the pressurized chemical liquid tank; and a two-fluid nozzle attached to a distal end of the extension connecting pipe; wherein the two-fluid nozzle comprises a compressed air passage connected to the compressed air pipe and a pressurized chemical liquid passage connected to the pressurized chemical liquid pipe, and is configured that the compressed air and the pressurized chemical liquid are mixed and ejected.

A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.

A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.

A binary nozzle for atomizing a mixture of agent to be sprayed and spray air is connected to at least one supply duct via which the mixture or the agent to be sprayed can be supplied to the binary nozzle, wherein a valve is arranged between this supply duct and a nozzle outlet of the binary nozzle. A corresponding spray head and also a method for atomizing a mixture of agent to be sprayed and spray air uses a binary nozzle. The binary nozzle includes a nozzle body formed in a single piece and including the nozzle outlet, wherein a movable assembly of the valve is fastened to the nozzle body by a fastening element and/or held tight against the nozzle body by a spring device.

A liquid atomizing device includes a medical solution cup connected to an air pump, and an output cover installed onto the medical solution cup and including an atomizing socket formed in the outer cover, and the top of the atomizing socket cover has a linear opening and a drainage groove for increasing the flow of a medical solution. When the medical solution is guided to flow upwardly through the drainage and sprayed from a specially designed linear opening to the outside through the drainage groove due to a high speed airflow, the medical solution is collided with a barrier rod disposed above the linear opening to form an atomized medical solution, and the linear opening has the effect of atomizing the medical solution stably.

A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.