Airgas Model L244ALB590 Brass Specialty High Purity Single Stage Mini Regulator With 1/8" FNPT Connection And SS DiaphragmThese compact, single stage general purpose and analytical series regulators are ideally suited for lecture bottles and other small cylinders. They are equipped with a CGA 180 connection for easy attachment to Airgas lecture bottles. Other CGA connections (110 or 170 CGAs) are available upon request. Rated to 3,000 psig, these regulators feature a built in, non lubricated needle valve that has been designed to regulate outlet flow. NOTE: Choose a