These quality cast-bronze fittings by Groco can be used in above- or below the waterline applications.Offered in full- or standard-flow designs. The cast hex nut facilitates installation. Generous seating area for double clamping.Key FeaturesAbove- or below-the-waterline applicationFull- or Standard-Flow designMarine UL 647B listedNPT threadsNot for use in potable water systems