NSI 4903 Compact, Single Stage, Demand Flow Regulator

NSI 4903 Compact, Single Stage, Demand Flow Regulator

 The 4903 demand flow regulators save you time & money on calibrations by transferring the precise amount of gas required by a pump drawn instrument. As long as the pump is active, the regulator will remain “open” and gas will flow. When the pump stops, the regulator will turn off. The result? Less wasted gas, and lower calibration costs. These compact demand flow regulators eliminate the need for shut off valves, sample bags, or specially trained operators, making your calibrations quick & easy.