11238 Filter Regulator for O500 July 24, 2020 $170.00 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 12490 Spray Manifold Assembly $362.00 Add to Cart 19453 Nozzle Assembly with insert $28.00 Add to Cart C9A Support Nipple $18.00 Add to Cart 13939 Five Gallon Upgrade for G507 $173.00 Add to Cart