Groco Bronze Tri-Flanged Ball Valve Seacock, 3/4 Inch NPT (FBV-750)

The Groco FBV-750 is a 3/4 inch bronze tri-flanged ball valve seacock designed to control water flow through a thru-hull fitting below the waterline. Built from solid bronze, it provides corrosion resistance for continuous seawater and marine environment exposure, making it suitable for use as a below-waterline shutoff on intake or discharge thru-hull applications. The valve features a tri-flanged body with a full-bore ball valve mechanism for reliable open/close operation, and its flanged design allows for secure mounting to the hull with multiple fastener points for added structural integrity compared to a single-flange design.

The FBV-750 has a 3/4 inch National Pipe Tapered (NPT) inlet connection and a 3/4 inch flanged outlet connection, with 2 total ports. The exterior finish is available in chrome or stainless steel. This seacock is intended for boat owners and marine technicians installing or replacing thru-hull shutoff valves where a durable, corrosion-resistant bronze ball valve is required.

Specifications

• Brand: Groco
• Manufacturer Part Number: FBV-750
• Material: Bronze
• Valve Type: Ball valve / seacock
• Connector Type: Flanged
• Number of Ports: 2
• Inlet Connection Size: 0.75 inches
• Inlet Connection Type: National Pipe Tapered (NPT)
• Outlet Connection Size: 0.75 inches
• Outlet Connection Type: Flange
• Thread Size: 3/4 inch
• Thread Type: NPT
• Exterior Finish: Chrome, Stainless Steel
• Item Dimensions: 15 x 14.75 x 12 inches
• Weight: 1.9 pounds

Fitment

Universal 3/4 inch NPT thru-hull application; no specific make, model, or year fitment is specified for this valve.

Replaces (OEM)

No OEM cross-reference numbers are listed for this part.

Frequently Asked Questions

What size is the Groco FBV-750 seacock? The Groco FBV-750 is a 3/4 inch tri-flanged ball valve seacock with a 3/4 inch NPT inlet connection and a 3/4 inch flanged outlet connection.

Is the FBV-750 made of bronze? Yes, the FBV-750 tri-flanged ball valve seacock is made of solid bronze, with an available chrome or stainless steel exterior finish.

How many ports does the FBV-750 have? The FBV-750 has 2 ports, matching its inlet and outlet connections in a standard ball valve configuration.

What thread type does the FBV-750 use? NPT (National Pipe Tapered) thread is used on the FBV-750's 3/4 inch inlet connection.

What are the dimensions of the FBV-750 seacock? The Groco FBV-750 measures 15 x 14.75 x 12 inches as a complete unit.

How much does the FBV-750 weigh? The FBV-750 tri-flanged ball valve seacock weighs 1.9 pounds.

What is a tri-flanged seacock used for? A tri-flanged seacock like the FBV-750 is installed at a below-waterline thru-hull to provide a shutoff valve for controlling water intake or discharge, with the flanged body providing multiple mounting points to the hull.

Does the FBV-750 come with mounting hardware or other components in the box? The dossier for the Groco FBV-750 does not specify included accessories beyond the valve unit itself.

What finish options are available for the FBV-750? The Groco FBV-750 is available with a chrome or stainless steel exterior finish.

Is the FBV-750 a full ball valve design? Yes, the FBV-750 is a ball valve/seacock type, providing full on/off shutoff control at the thru-hull.