Comparison : Item # M1-320-PG, Single-Stage Adjustable Delivery Pressure Regulator with CGA-320 Nut and Nipple Inlet
Item # M1-320-PGH, Single-Stage Adjustable Delivery Pressure Regulator with CGA-320 Handtight Nut and Nipple Regulator Inlet
Item # M1-940-PG, Single-Stage Adjustable Delivery Pressure Regulator with CGA-940 Yoke Inlet
Item # M1-326-PG, Single-Stage Adjustable Delivery Pressure Regulator with CGA-326 Nut and Nipple Inlet
Item # M1-326-PGH, Single-Stage Adjustable Delivery Pressure Regulator with CGA-326 Handtight Nut and Nipple Inlet