Moeller 1/4 in. NPT Brass Fuel Shut-Off Valve, Male/Female

The Moeller 033300-10 is a brass fuel shut-off valve built for marine fuel tank and fuel line systems where a reliable, manual on/off point is needed. It uses a globe valve design with a male/female 1/4 in. NPT connection, giving it two ports so it can be plumbed directly inline between a fuel tank and the engine's fuel supply or fill line. The brass construction resists the corrosion and fuel exposure typical of an onboard marine fuel system, making it a durable choice for shutting off fuel flow during storage, maintenance, or an emergency shutdown. Its compact 1/4 in. Thread size matches standard small-engine and auxiliary fuel line fittings, and the male/female NPT ends let it thread directly between existing male and female fuel fitting connections without needing an adapter. This valve is part of Moeller's line of fuel system shut-off valves, which also includes three-way and four-way brass valve configurations and a replacement handle for those multi-way valves; the 033300-10 is the standard two-port, male/female version. It ships as a single unit ready to install into a 1/4 in. NPT fuel line run.

Specifications

• Brand: Moeller
• Manufacturer Part Number: 033300-10
• Valve Type: Globe valve
• Material: Brass
• Connection Type: Male/Female NPT
• Thread Size: 1/4 inch
• Inlet/Outlet Connection Size: 1/4 inch NPT
• Number of Ports: 2
• Weight: 0.28 pounds
• Package Height: 6 inches
• Package Length: 8.5 inches
• Package Width: 7 inches
• UPC: 739729333006

Fitment

Fits any 1/4 in. NPT marine fuel line or fuel tank fitting requiring a male/female shut-off connection; not restricted to a specific engine or boat model.

Replaces (OEM)

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

Frequently Asked Questions

What is the Moeller 033300-10 used for? The Moeller 033300-10 is a brass fuel shut-off valve used to manually stop fuel flow in a marine fuel line, typically installed between the fuel tank and engine or along a fill line.

What size connections does this valve have? It has 1/4 inch NPT male and female connections, threading directly into a 1/4 inch NPT fuel line fitting without an adapter.

Is the 033300-10 valve brass or plastic? The 033300-10 is a brass shut-off valve, chosen for its resistance to fuel exposure and corrosion in marine fuel systems.

How many ports does the Moeller 033300-10 have? This valve has 2 ports, making it a straight-through, two-way shut-off rather than a three-way or four-way valve.

How much does the 033300-10 weigh? The Moeller 033300-10 fuel shut-off valve weighs 0.28 pounds.

What are the package dimensions of this valve? The Moeller 033300-10 ships in packaging measuring 8.5 inches long, 7 inches wide, and 6 inches high.

Is a replacement handle available for this valve? Moeller offers a replacement handle part, but it is designated for the three-way and four-way brass valves, not specifically for the 033300-10 two-port valve.

Can this valve be used with a three-way or four-way fuel valve setup? No, the 033300-10 is the two-port male/female valve; Moeller's three-way and four-way brass valve configurations are separate parts with their own part numbers.

What is the UPC for the Moeller 033300-10? The UPC for the Moeller 033300-10 fuel shut-off valve is 739729333006.

Is the Moeller 033300-10 a genuine Moeller part? Yes, the 033300-10 is a genuine Moeller brand fuel shut-off valve, not a generic aftermarket substitute.

What thread type does the 033300-10 use? It uses 1/4 inch NPT (National Pipe Tapered) threads on both its male and female connection ends.