Paint Booth Air Flow Requirements

Airflow in a downdraft paint booth.

Paint booth air flow requirements.

If you make the filter section too small you can expect turbulence in the booth and this will cause paint overspray to settle on the walls ceiling lamps etc. We consider the painting area a spray area rather than a spray room or booth. Osha 29 1910 and nfpa 33 have minimum requirements for air flow to decrease the concentration of flammable materials in a spray paint booth. The three main styles of paint booths are cross draft down draft and side down draft paint booths.

One of the first online sellers of paint booths we are recognized by google inc. This exhaust fan needs to be properly sized to move enough air out of the work area. The old standard was 100 linear feet per minute lfm and this is still stated in the international fire code ifc. Their air flow requirements are summarized below.

Keep your spray booth clean and change filters regularly. For this example let s use 50 fpm. Air velocity 312 5 ft2 x 50 ft min 15 625 ft3 min. In the past nfpa dictated paint booth air flow needed to be 100 fpm for non electric static coating application.

Such plates shall not be located in exhaust ducts. The fumes are removed from the area by use of an exhaust fan. Fans to push and pull the air being pushed in and pulled out are done with two types of fans. The amount of air a paint booth exhausts will depend on the style of paint booth.

If a downdraft paint booth is 16 feet wide and 14 feet tall typical air velocity in the booth would be 50 to 100 fpm. Aside from these minimum requirements for paint booths there are some essential safety practices to make sure your booth is maintained properly. Controlling the paint booth air flow going into the booth with relation to the air being exhausted from the booth is critically important to maintain the proper flow of air over the item being painted and remove the over spray effectively. Dividing the flow rate by the volume 32 000 8 960 gives 3 5 air changes per minute.

The total flow through the booth 16 x 40 x 50 would be 32 000 cfm. If you want uniform air distribution throughout the booth you should size the air intake filters accordingly. 1 000 000 leads generated and internet retailer america s top 500 largest retail web sites we have a history as a successful online retailer. All of our paint booths comply with all osha and nfpa 33 guidelines and many can be etl certified.

2 what is the minimum required maintained ventilation velocity. Spray painting performed in the hangars will be primarily spot maintenance but large areas of the aircraft could occasionally be painted. When spraying paint in a paint booth you need to expel the fumes from the work area. Distribution or baffle plates if installed to promote an even flow of air through the booth or cause the deposit of overspray before it enters the exhaust duct shall be of noncombustible material and readily removable or accessible on both sides for cleaning.