FAHIR M.I.M132415V

SPRAYING AND PLASTERING MACHINES

FAHIR M.I.M132415V

IntroductionPlaster spraying allows a

plasterer to skim a drywall more than five times faster than using a hand float to apply it. Although classic gypsum-based plaster can be sprayed if it is "spray grade," most plaster sprayers prefer the organic-based pre-mixed plaster packaged in a plastic bag because the plaster spraying machine does not need to be cleaned out after the job is finished, providing that plaster is kept moist.

Types of Plastering MachinesPlaster sprayers are of three types:

Worm-drive pump Peristaltic pump Piston pump

Worm-drive pump Most commonly, sprayers have a worm-drive pump that pumps the plaster up to a spray gun that has a large nozzle, usually 4 to 8 mm, that extrudes the plaster into a chamber on the end of the gun.

Peristaltic pump There are a few plaster sprayers that have a peristaltic pump (a tube squeezed by rollers) which also requires compressed air to produce a spray. These types of plaster sprayer can also spray textured coatings with particle sizes up to about 3mm diameter, providing that they are not solvent based.

Piston pumpNewer types of plaster sprayer have a piston pump, which has sufficient pressure to spray smooth (untextured) plaster without compressed air.