I could not find a Miller part so I called and was able to locate a hard to find part which they shipped and received in a few days.
Collection: Miller Regulators
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Miller 320-00230000 REG,HPC,2-ST,25PSI,1/4FNPT,CGA350SS
Vendor:MillerRegular price $1,581.79Regular priceUnit price / per -
Miller 323-83230000 REG,HPC,2-ST,250PSI,1/4 TB SS,CGA350SS
Vendor:MillerRegular price $1,587.09Regular priceUnit price / per -
Miller 321-00230000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA350SS
Vendor:MillerRegular price $1,589.68Regular priceUnit price / per -
Miller 323-83250000 REG,HPC,2-ST,250PSI,1/4 TB SS,CGA660SS
Vendor:MillerRegular price $1,599.32Regular priceUnit price / per -
Miller 321-00250000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA660SS
Vendor:MillerRegular price $1,600.49Regular priceUnit price / per -
Miller 321-00240000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA580SS
Vendor:MillerRegular price $1,613.44Regular priceUnit price / per -
Miller 321-00220000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA330SS
Vendor:MillerRegular price $1,613.44Regular priceUnit price / per -
Miller 322-66240000 REG,HPC,2-ST,100PSI,1/4MNPT NDL SS,CGA580SS
Vendor:MillerRegular price $1,622.68Regular priceUnit price / per -
Miller 310-69220000 REG,HPC,1-ST,25PSI,1/8 TB SS DPM,CGA330SS
Vendor:MillerRegular price $1,624.65Regular priceUnit price / per -
Miller 310-69250000 REG,HPC,1-ST,25PSI,1/8 TB SS DPM,CGA660SS
Vendor:MillerRegular price $1,624.68Regular priceUnit price / per -
Miller 323-83240000 REG,HPC,2-ST,250PSI,1/4 TB SS,CGA580SS
Vendor:MillerRegular price $1,627.71Regular priceUnit price / per -
Miller 320-83250000 REG,HPC,2-ST,25PSI,1/4 TB SS,CGA660SS
Vendor:MillerRegular price $1,627.71Regular priceUnit price / per -
Miller 322-66250000 REG,HPC,2-ST,100PSI,1/4MNPT NDL SS,CGA660SS
Vendor:MillerRegular price $1,636.88Regular priceUnit price / per -
Miller 322-66220000 REG,HPC,2-ST,100PSI,1/4MNPT NDL SS,CGA330SS
Vendor:MillerRegular price $1,641.49Regular priceUnit price / per -
Miller 321-81240000 REG,HPC,2-ST,50PSI,1/8 TB SS,CGA580SS
Vendor:MillerRegular price $1,648.13Regular priceUnit price / per -
Miller 321-83250000 REG,HPC,2-ST,50PSI,1/4 TB SS,CGA660SS
Vendor:MillerRegular price $1,654.75Regular priceUnit price / per -
Miller 321-83220000 REG,HPC,2-ST,50PSI,1/4 TB SS,CGA330SS
Vendor:MillerRegular price $1,660.26Regular priceUnit price / per -
Miller 320-00310000 REG,HPC,2-ST,25PSI,1/4FNPT,CGA705SS
Vendor:MillerRegular price $1,691.08Regular priceUnit price / per -
Miller 322-00310000 REG,HPC,2-ST,100PSI,1/4FNPT,CGA705SS
Vendor:MillerRegular price $1,706.17Regular priceUnit price / per -
Miller 320-66230000 REG,HPC,2-ST,25PSI,1/4MNPT NDL SS,CGA350SS
Vendor:MillerRegular price $1,711.48Regular priceUnit price / per -
Miller 321-66240000 REG,HPC,2-ST,50PSI,1/4MNPT NDL SS,CGA580SS
Vendor:MillerRegular price $1,718.04Regular priceUnit price / per -
Miller 320-66250000 REG,HPC,2-ST,25PSI,1/4MNPT NDL SS,CGA660SS
Vendor:MillerRegular price $1,724.20Regular priceUnit price / per -
Miller 323-00310000 REG,HPC,2-ST,250PSI,1/4FNPT,CGA705SS
Vendor:MillerRegular price $1,728.68Regular priceUnit price / per -
Miller 321-66250000 REG,HPC,2-ST,50PSI,1/4MNPT NDL SS,CGA660SS
Vendor:MillerRegular price $1,730.79Regular priceUnit price / per