The pass-through kit (model 25973) can be used on the sides or back of flammable liquid safety cabinets. This unique system provides a means to dispense solvents with pressurized nitrogen through the wall of a cabinet, if a pressure nitrogen assist from an outside source is needed. It can also be used for vacuum or pressure venting containers inside the cabinet. The stainless-steel construction without a check valve allows flow in either direction. A ¼-in NPT (tapered) fitting is required to thr