Comparison : Item # NVC4F4F-6, 1/4 Inch (in) Size F x F Style Carbon Steel 6000 PSI Full Size Needle Valve
Item # NVC4M4F-6, 1/4 Inch (in) Size M x F Style Carbon Steel 6000 PSI Full Size Needle Valve
Item # NVCA4M4F-6, 1/4 Inch (in) Size M x F Angle Style Carbon Steel 6000 PSI Full Size Needle Valve
Item # NVC8F8F-6, 1/2 Inch (in) Size F x F Style Carbon Steel 6000 PSI Full Size Needle Valve
Item # NVC8M8F-6, 1/2 Inch (in) Size M x F Style Carbon Steel 6000 PSI Full Size Needle Valve