The GASCO 75-DFR Demand Flow Regulator is a high-quality, nickel-plated brass regulator designed for precise and consistent delivery of calibration gases. Its demand flow mechanism ensures that gas is supplied only when required, optimizing gas usage and extending cylinder life. The regulator features a C-10 inlet connection and a 3/16” barb outlet, accommodating a variety of calibration gas cylinders. With a flow rate capacity ranging from 0 to 3.0 liters per minute (LPM) at 3” water column pressure, it is suitable for various calibration applications. The 75-DFR is compatible with GASCO ecosmart™ cylinders (44L, 66L, and 116L) and other disposable calibration gas cylinders, excluding those containing NH₃, Cl₂, NO, NO₂, HCl, and HCN.