11238 Filter Regulator for O500 July 24, 2020 View cart “12491 Solvent Filter Assembly” has been added to your cart. $222.00 11238 Filter Regulator for O500 quantity — OR — 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 21197 Pump retrofit bypass kit for G550 $195.00 Add to Cart 21350 Pump assembly water side for G520 $968.00 Add to Cart 13836 Outer Filter Bags $82.00 Add to Cart CoAgent (CA01) $59.00 Add to Cart