GROCO 3/4" NPT Bronze 3-Way Valve

The GROCO 3/4" NPT Bronze 3-Way Valve is a precision-engineered fluid control component designed for marine plumbing, freshwater systems, and custom vehicle hydraulic applications. Built by GROCO, a trusted name in marine-grade hardware, this three-port valve is ideal for routing, diverting, or mixing fluid flows in high-reliability installations where corrosion resistance and durability are essential.

Machined from marine-grade bronze, the GROCO 3/4" NPT valve resists dezincification and galvanic corrosion, making it suitable for seawater exposure or systems using aggressive coolant formulations. The 3/4" NPT (National Pipe Thread) connection standard ensures compatibility with most aftermarket plumbing fittings and hose adapters widely available in the performance and marine sectors. Its three-way configuration allows for flow path selection: straight-through, diverting, or mixing modes depending on manifold orientation and valve actuation.

This valve is particularly beneficial for those fabricating custom cooling loops, integrating secondary fluid distribution in off-road builds, or upgrading marine head systems. The manual ball-type operation provides tactile control without relying on solenoids or external power, while its compact footprint and verified weight make integration straightforward in tight engine bays or below-deck installations.