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 54 Brass Nozzle $20.00 Add to Cart 13835 Inner Filter Bags $85.00 Add to Cart 21350 Pump assembly water side for G520 $968.00 Add to Cart Sparkle Clean (SC01/SC06) $59.00 Add to Cart