11238 Filter Regulator for O500 July 24, 2020 $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 13835 Inner Filter Bags $82.00 Add to Cart 19453 Nozzle Assembly with insert $46.00 Add to Cart 21350 Pump assembly water side for G520 $968.00 Add to Cart 54 Brass Nozzle $18.00 Add to Cart