11238 Filter Regulator for O500 July 24, 2020 $222.00 11238 Filter Regulator for O500 quantity Add to Cart Category: Parts Description Resources Description The 11238 filter regulator is 1/4″ npt and set to 38 psi for use in the O500 (retired) paint gun washer. Related products 13835 Inner Filter Bags $82.00 Add to Cart 12490 Spray Manifold Assembly $580.00 Add to Cart CoAgent (CA01) $59.00 Add to Cart 12491 Solvent Filter Assembly $105.00 Add to Cart