Coilhose Pneumatics 8802GL Heavy Duty Series Regulator, 1/4-Inch Pipe Size with Gauge and Low Pressure Spring (0-50 PSI) by Coilhose Pneumatics B008PZ7050 Dixon F16-02M Manual Drain Wilkerson Airline Compact Filter with Transparent Bowl and Guard, 1/4 Size, 63 SCFM Flow, 150 psig Pressure by Dixon Valve & Coupling B007D5AW9E Proto 577-10020L Skt Imp 1 Dr 1-1-4 6 Pt B0025QGIJY。