Groco Bronze Check Valve PNC-750, 3/4 Inch NPT Freshwater System Valve

The Groco PNC-750 is a bronze check valve built for freshwater system plumbing aboard boats, allowing flow in one direction only to prevent backflow through a line. It is machined from solid bronze for corrosion resistance in a marine environment, making it suitable for use with onboard freshwater plumbing where a reliable one-way valve is needed to protect pumps, tanks, and fixtures from reverse flow. The valve has a bronze exterior finish and a compact, two-port body designed to thread directly into standard pipe fittings.

The PNC-750 has a National Pipe Tapered (NPT) inlet connection sized at 1 inch and a female NPT (FNPT) outlet connection, giving it two ports total for straightforward inline installation. It measures 2 inches by 1 inch by 1 inch and weighs 0.19 pounds, making it a compact addition to a freshwater plumbing run without adding significant weight or bulk. As a check valve, it is a simple, no-power mechanical component that requires no maintenance beyond periodic inspection for debris or wear.

Specifications

• Brand: Groco
• Manufacturer Part Number: PNC-750
• Product Type: Check Valve
• Material: Bronze
• Exterior Finish: Bronze
• Inlet Connection Size: 1 inch
• Inlet Connection Type: National Pipe Tapered (NPT)
• Outlet Connection Type: FNPT
• Number of Ports: 2
• Item Dimensions: 2 inches x 1 inch x 1 inch
• Weight: 0.19 pounds

Frequently Asked Questions

What does the Groco PNC-750 check valve do? The PNC-750 is a bronze check valve that allows water to flow in only one direction through a freshwater plumbing line, preventing backflow into a tank, pump, or fixture.

What size connections does the PNC-750 have? It has a 1 inch National Pipe Tapered (NPT) inlet connection and a female NPT (FNPT) outlet connection, with 2 ports total.

What material is the Groco PNC-750 made of? Bronze, with a bronze exterior finish, giving it corrosion resistance for use in marine freshwater plumbing systems.

How big is the PNC-750 check valve? The valve measures 2 inches by 1 inch by 1 inch and weighs 0.19 pounds.

Is this valve suitable for a boat's freshwater system? Yes, the Groco PNC-750 bronze check valve is designed for use in marine freshwater system plumbing to prevent reverse flow.

Does the PNC-750 require any maintenance? As a mechanical check valve with no seals to service on a schedule, the PNC-750 generally only needs periodic inspection to confirm it is free of debris and seating properly.

How many ports does the PNC-750 have? The Groco PNC-750 has 2 ports: one NPT inlet and one FNPT outlet.

Does the PNC-750 come as a single valve? Yes, the PNC-750 is sold as a single check valve unit.

Is the PNC-750 a genuine Groco part? Yes, PNC-750 is the Groco manufacturer part number for this bronze check valve.

Can the PNC-750 be installed in either flow direction? No, a check valve like the PNC-750 is designed to permit flow in one direction only, from the NPT inlet through to the FNPT outlet, to block backflow.