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 system for particularly inputting and controlling a volume or pressure of a lubricating fluid or fluid-air mixture provided to a machining tool during minimum quantity lubrication machining operations. The system can further include a computer numeric control (CNC) machine and a minimum quantity lubrication system for providing lubrication to the CNC machine.

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 plural component spray gun (1) is designed for spraying quick setting materials such as foams, polyurea and the like. Towards this end, the gun (1) is designed so as to be easily serviceable with a minimum of tools. For example, the side seal cartridges (18) and (20) may be installed and removed without tools by removing the retaining ring (9) and then extracting them from the fluid housing (11). Those cartridges (18) and (20) are easily disassembled and cleaned. Similarly, the fluid housing (11) may be removed from the handle/body (1) by unscrewing the lock ring (7) by hand.

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).