« Back to previous category In-line air adjusting valve Description Description Code: 811.HAV-501-B Fits neatly in-line at the gun air inlet Increase or decrease working pressure at the gun Calibrated up to 11 Bar (160 psi) Related products DeVilbissSpray gunPROLite® Read more DeVilbissToolsFinish Line regulation and filtration systems Read more DeVilbissAccessoriesGravity feed cups Read more