The MACH 1PCX gun is a lightweight, hand-held, plural component spray gun for spraying limited applications of two-component materials, such as gel-coats or polyesters. The spray gun is operated in the conventional manner. The trigger action starts, and stops, the spray of both materials simultaneously. The two materials exit separately as an atomized spray from their respective nozzles and impinge on each other approximately 6" in front of the gun (resin) nozzle. Here, the resulting turbulence insures intimate mixing.
Preferably, the resin should be supplied from a pressure cup mounted either on the gun or located remotely from it. In some applications, a siphon cup may be acceptable.
The curative is supplied from a siphon container assembly mounted directly on the gun. Air, diverted from the gun handle, passes through the air adjusting valve to the nozzle body to provide the siphon action and to serve as atomizing air for the curative. The adjustable fluid control meters the flow of curative.
NOZZLE CHARACTERISTICS AND SPRAY PATTERNS
The MACH 1 PCX gun uses external atomizing nozzles* to produce finer atomization and better control of the spray pattern. The pattern can be changed from round to fan and to all intermediate shapes by adjusting the side port control on the gun. The pattern also can be rotated to any position in 360º by loosening the retaining ring on the nozzle. Intimate intermixing and distribution of the curative within the primary material is maximum when the long dimension of the fan spray pattern is vertical (lined up with the gun handle). The resin delivery rate of external atomizing nozzles is in the low to medium range.