2" FPT 1st Stage regulator 1/2 orifice 5-20 PSI
3/4 FPT 1st Stage regulator 1/2 orifice 5-20 PSI
1" FPT 1st Stage regulator 1/2 orifice 5-20 PSI
1" FPT 1st stage regulator 1/2 orifice*5-20 psi w/monitor
1" FPT 1st stg regulator 1/2" orifice 5-20 PSI GLT Viton tri
3/4 FPT 1st Stage regulator 3/8 orifice 5-20 PSI
3/4" Regulator 5-20# setting 3/8" orifice with relief