Pneumatic Check Valve NPT Port 3/8 In Operating Temp 0 to 200 Deg F Max Operating PSI 200 Pipe Port Inserts Zinc Plated Housing Material Composite Calibrated Adjustment Knob Micrometer Color Coded Needle 4 Stage Ring Lock Standard Threaded for Panel Mount Body Length 2 27/32 In Height 1 11/16 In Width 1 5/16 In CFM 58 Not Included Panel Nut