Two Stage Ar N2 O2 Air Gas Regulator Chiyoda Seiki Bhn-3 Japan Type Style with Adjustment Metering Valve 1MPa 10bar 10kgf/Cm2 25MPa 250bar - China Reducer, Pressure Reducer | Made-in-China.com
HPA Valve Tank Adapter 4500psi Pressure Air Tank Regulator PCP - Walmart.com