Application Hardware for Air Drying Auto Refinishes

Why Regulate ? Ozone Causes: Alveolar injury leading to pulmonary inflammation and permanent lung damage Respiratory discomfort to sensitive populations $330 Million in crop damage each year Damage & failure of paints and rubber parts

Red areas are non-attainment for the state standard

Secondary Pollutants Ozone (O 3 ) Peroxyacetyl Nitrate (PAN) Peroxybutyrl Nitrate (PBN) Peroxyproprionyl Nitrate (PPN) Polycyclic Aromatic Hydrocarbons (PAH)

Districts With Auto Refinishing Rules Bay Area AQMD8-45 Santa Barbara Co. APCD339 South Coast AQMD1151 San Joaquin Unified APCD4602 Yolo-Solano2.26 Placer234 Sacramento459

Coating steps and points of emission Coating steps and points of emission sanding/blasting (particulates) surface clean and prep surface clean and prep primer & topcoat application primer & topcoat application flash off/drying flash off/drying cure cure touch up touch up equipment clean up

ROG Control Strategies for Coatings Use Reduction Use of Exempt Solvents Use of Exempt Solvents Use of Water-Borne Products Use of Water-Borne Products Increased Solids Contents Increased Solids Contents Increased Transfer Efficiency Increased Transfer Efficiency Retrofit Control Devices Capture and Reuse Capture and Reuse Capture and Destroy Capture and Destroy

Transfer Efficiency (T.E.) the ratio of the amount of solids adhering, to the amount of solids appliedthe ratio of the amount of solids adhering, to the amount of solids applied

Transfer Efficiency Parameters Spray equipmentSpray equipment Shape of PartShape of Part Ambient temperature and humidityAmbient temperature and humidity Air flow rate in spray boothAir flow rate in spray booth Painters training and experiencePainters training and experience Coating chemistryCoating chemistry Paint pressure and air pressure at nozzlePaint pressure and air pressure at nozzle

020%30%40%50%60%70%80%90%100% HVLP Airless Electrostatic Air - Assisted Airless Electrostatic Air Electrostatic Air - Assisted Airless Airless Spray 65% Percent Transfer Efficiency Air Spray

Spray fan pattern is compressed by air from the wing ports or horns on the spray cap.

Wing Port Spray Gun Air path

deVilbiss gun

Spray cap pressure gauge

Gun air pressure gauge. Can this replace the spray cap pressure gauge?

HVLP Gun Manufacturers SATA High end products w/ precision engineering and digitally controlled mechanisms. DeVilbiss age old industry standard spray gun. A wide range of models. Sharpe American made, budget price. Binks Another industry standard gun. Binks guns share a market niche with DeVilbiss. Today both are owned by ITW. Accuspray The only gun with a plastic body. Astro Pneumatic guns are modeled after higher priced models above.

Three styles of spray gun Gravity feed Suction/Siphon cup Pressure feed

Optional digital pressure readout

Do we need a spray cap pressure gauge? Inspection

LaserTouch targeting device improves a sprayer's transfer efficiency by reducing overspray and material consumption. mounted to a spray gun, dual lasers project an image that helps maintain optimal distance btwn gun & target Proper spray gun distance, gun angle, lead & lag, edging and overlap impact TE. Developed by Iowa Waste Reduction Center

Electrostatic spray gun note charging electrode

Safety Clean gun Safety Clean gun cleaner. Is this a cleaner. Is this a covered or open covered or opencontainer? Gun Cleaning Station

Cup Liners Two manufacturers Disposable Save gun cleaning emissions Not yet required by anyone.

Trends in today’s spray enclosure Temperature & Humidity control OSHA safeguards

Booth Design Air Flow Particulate Collection DowndraftWater Wash Sidedraft Dry filter Hood

Inspection

Check for dirty, painted or clogged filters Check magnehelic for pressure drop Inspection

Automated VOC tracking system