Reply to "slickum paint booth"

accobraMember

Bill,

Your design is backwards.

Downdraft, crossdraft and side draft all use a Tubular Axial EXHAUST fans. You DO NOT want to pressurize a paint booth. That causes turbulance. You want to exhaust the air out and bring clean filtered air in.

The theory is to filter and some times heat Makeup Air and then pull it down or across the booth with an Exhaust fan.

The way to measure the density or how dirty your filters are is with a magnahelic guage with 2 ports or tubes one on each side of the filter plenum.

Either way your sealing the booth is correct.

The problem is and why you see white paint trying to escape is your forcing 4000cfm thru a 24" pipe which is too small to maintain a negitive pressure ... your want the air pulled down and out.

The only change I would make is remove the intake fan and put it on the exhaust.

2/26/073:56 PM

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