HEAVY DUTY HIGH FLOW INDUSTRIAL RATED PARTICULATE FILTER & REGULATOR COMBINATION WITH GAUGE. 11OZ METAL BOWL AND VISIBLE SIGHT GLASS COMES COMPLETE WITH METAL WALL MOUNTING BRACKET. EQUIPPED WITH AN ADJUSTABLE TURN KNOB. SIMPLY LIFT THE KNOB TO ADJUST THE PRESSURE, THEN PRESS DOWN TO LOCK INTO PLACE TO SET YOUR DESIRED PRESSURE. THE KNOB IS REMOVABLE AS A SAFETY FEATURE TO PREVENT TAMPERING. 5 MICRON FILTER WILL REMOVE 95% OF MOISTURE & DEBRIS FROM YOUR COMPRESSED AIRLINES. FILTER MUST BE INSTALLED UPRIGHT WITH BOWL FACING DOWNWARDS. THIS IS A ONE WAY DIRECTIONAL FLOW FILTER REGULATOR. ARROWS ARE MARKED ON THE UNIT TO SHOW THE AIR FLOW PATH. INLET AND OUTLET ALSO CLEARLY MARKED. 0-225 PSI BACK MOUNT GAUGE INCLUDED. GAUGE PORT IS 1/4" NPT. OPERATION INSTRUCTIONS INCLUDE. PLEASE NOTE ::: THE MOST EFFICIENT WAY TO SEPARATE AIR FROM WATER IN YOUR COMPRESSED AIR LINES, STARTS WITH YOUR COMPRESSED AIR LINES THEMSELVES. ALWAYS FORCE AIR TO CLIMB VERTICALLY TO YOUR FILTERS,REGULATORS, AIR OUTLETS, ETC. WHILE POOLING LIQUID WATER IS FORCED DOWNWARDS BY GRAVITY INTO SOME SORT OF COLLECTION DRAIN, AUTO DRAIN OR BALL VALVE THAT IS DISCHARGED EVERY SO OFTEN.