Home › DeVilbiss › Accessories › In-line air adjusting valve« 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 DeVilbissAccessoriesHigh flow air hose assemblies Read more DeVilbissAccessoriesFluid hose assemblies Read more DeVilbissSpray gunGPG™ Read more