Miniature airline equipment. The Range of miniature air preparation products comprising general purpose and oil removal filters, regulators, lubricatore filter/regulators, relief valves and combination units. these units are available in standard iso g paralled thread or optional iso re tapered and npt threads in 1/8" or 1/4" port size the exteriors are protected with stain black epoxy paint, providing excellent corrosion and chip resistance. These regulators have dual function knob with snap action lock and a specially designed valve seat to provide smoother operation and improved flow