Internal nuts
Internal nuts are for use with all standard Valco internal fittings and most valves, with sizes for tubing from 1/32" to 1/4" OD. We also offer a specialty controlled radius nut, which facilitates tight bends in the tube as it exits the fitting, helping to prevent tubing kinks.
External nuts
External nuts are for use with external fittings such as our ECEF series column end fittings and EZU and EZRU unions.
