This adjustable fixedhyphen;flow restrictor comprises a body fabricated from a 1/4hyphen;in.hyphen;o.d. tubing union tee using tools available in most laboratories and a 1/4hyphen;28 NF set screw as an adjustable plug. A soft setting screw thread locking material serves as a combination stem seal and means for locking the set screw in place following adjustment for desired flow rate. Air flow rates between 0.15 and 50 or more l/min (0.3 to 100+CFH) can be obtained with a pressure drop to atmospheric conditions of 1.3 atm (20 psi).
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