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:Regular price $1,462.45Regular priceUnit price / per -
Miller 323-83230000 REG,HPC,2-ST,250PSI,1/4 TB SS,CGA350SS
Vendor:Regular price $1,467.36Regular priceUnit price / per -
Miller 321-00230000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA350SS
Vendor:Regular price $1,469.75Regular priceUnit price / per -
Miller 323-83250000 REG,HPC,2-ST,250PSI,1/4 TB SS,CGA660SS
Vendor:Regular price $1,478.66Regular priceUnit price / per -
Miller 321-00250000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA660SS
Vendor:Regular price $1,479.74Regular priceUnit price / per -
Miller 321-00240000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA580SS
Vendor:Regular price $1,491.71Regular priceUnit price / per -
Miller 321-00220000 REG,HPC,2-ST,50PSI,1/4FNPT,CGA330SS
Vendor:Regular price $1,491.71Regular priceUnit price / per -
Miller 322-66240000 REG,HPC,2-ST,100PSI,1/4MNPT NDL SS,CGA580SS
Vendor:Regular price $1,500.26Regular priceUnit price / per -
Miller 310-69220000 REG,HPC,1-ST,25PSI,1/8 TB SS DPM,CGA330SS
Vendor:Regular price $1,502.08Regular priceUnit price / per -
Miller 310-69250000 REG,HPC,1-ST,25PSI,1/8 TB SS DPM,CGA660SS
Vendor:Regular price $1,502.11Regular priceUnit price / per -
Miller 323-83240000 REG,HPC,2-ST,250PSI,1/4 TB SS,CGA580SS
Vendor:Regular price $1,504.91Regular priceUnit price / per -
Miller 320-83250000 REG,HPC,2-ST,25PSI,1/4 TB SS,CGA660SS
Vendor:Regular price $1,504.91Regular priceUnit price / per -
Miller 322-66250000 REG,HPC,2-ST,100PSI,1/4MNPT NDL SS,CGA660SS
Vendor:Regular price $1,513.38Regular priceUnit price / per -
Miller 322-66220000 REG,HPC,2-ST,100PSI,1/4MNPT NDL SS,CGA330SS
Vendor:Regular price $1,517.65Regular priceUnit price / per -
Miller 321-81240000 REG,HPC,2-ST,50PSI,1/8 TB SS,CGA580SS
Vendor:Regular price $1,523.79Regular priceUnit price / per -
Miller 321-83250000 REG,HPC,2-ST,50PSI,1/4 TB SS,CGA660SS
Vendor:Regular price $1,529.91Regular priceUnit price / per -
Miller 321-83220000 REG,HPC,2-ST,50PSI,1/4 TB SS,CGA330SS
Vendor:Regular price $1,535.00Regular priceUnit price / per -
Miller 320-00310000 REG,HPC,2-ST,25PSI,1/4FNPT,CGA705SS
Vendor:Regular price $1,563.50Regular priceUnit price / per -
Miller 322-00310000 REG,HPC,2-ST,100PSI,1/4FNPT,CGA705SS
Vendor:Regular price $1,577.45Regular priceUnit price / per -
Miller 320-66230000 REG,HPC,2-ST,25PSI,1/4MNPT NDL SS,CGA350SS
Vendor:Regular price $1,582.36Regular priceUnit price / per -
Miller 321-66240000 REG,HPC,2-ST,50PSI,1/4MNPT NDL SS,CGA580SS
Vendor:Regular price $1,588.42Regular priceUnit price / per -
Miller 320-66250000 REG,HPC,2-ST,25PSI,1/4MNPT NDL SS,CGA660SS
Vendor:Regular price $1,594.12Regular priceUnit price / per -
Miller 323-00310000 REG,HPC,2-ST,250PSI,1/4FNPT,CGA705SS
Vendor:Regular price $1,598.26Regular priceUnit price / per -
Miller 321-66250000 REG,HPC,2-ST,50PSI,1/4MNPT NDL SS,CGA660SS
Vendor:Regular price $1,600.21Regular priceUnit price / per