Comparison : Item # FN1/4-1, 1/4 Inch (in) Thread Size Carbon Steel Flow Control Valve
Item # FN3/8-1, 3/8 Inch (in) Thread Size Carbon Steel Flow Control Valve
Item # FN1/2-1, 1/2 Inch (in) Thread Size Carbon Steel Flow Control Valve
Item # FN3/4-1, 3/4 Inch (in) Thread Size Carbon Steel Flow Control Valve
Item # FN1-1, 1 Inch (in) Thread Size Carbon Steel Flow Control Valve