Preece Precision high quality performance regulators are highly engineered for demanding applications. The compact dual fixed pressure outlet regulators are supplied factory preset at 100 PSI and 125 PSI, but also allow for simple field adjustment from two outlets with a range of 0-400PSI without the need of filing springs and/or using shims and washers. Just simply loosen the set screw, adjust the knob to the desired pressure and lock the screw! Run two components from one single pressure source, or manifold two regulators to run four components with one pressure source. Designed to be compatible with Air, Co2, Nitrogen or Nitrous Oxide.