« 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 DeVilbissAccessoriesSwivel quick couplings Read more DeVilbissAccessoriesGravity feed cups Read more DeVilbissSpray gunPROLite® Read more