China Hyvst Piston Pump Airless Paint Sprayer - China ...- wallis tar sprayer pump piston ,Airless Paint Sprayer, Paint Gun, Spraying Machine manufacturer / supplier in China, offering Hyvst Piston Pump Airless Paint Sprayer, Hyvst Pneumatic Double Diaphragm Pump Spxd180-F, Hyvst Gun Filters Waga Type and so on.Tips & Guide For Applying Sealers with Sprayer Equipment ...Cleaning pump-up sprayers If working with lacquer, keep a gallon of xylene or lacquer thinner handy for cleaning. When refilling sprayer tank with lacquer or taking a …