Airgas - Y12C445D330-AG - Airgas® Model C445D330 Stainless Steel High Purity Two Stage Pressure Regulator With 1/4" FNPT Connection And Threadless Seat
Marsh Bellofram 960-181-000 Air Pressure Regulators, 1/4" NPT(F), 0 to 30 psi from Cole-Parmer
Low Pressure Lightweight Fluid Regulator, 3-30 PSI, 0.5 GPM, Acetal, Air, 1/4(f) x 1/4(f), 1/4(f) Port | Spray Equipment & Service Center
Air Regulator 5 to 30 psi - 2 bar max pressure special Airbrush 1/4 Bsp ports | eBay