Moeller Brass Fuel Shut-Off Valve, 1/4 in. NPT Female/Female, 033303-10

The Moeller 033303-10 is a brass fuel shut-off valve built for boat fuel systems, letting you cut fuel flow at the tank or fuel line without disconnecting hose. It is machined from brass for corrosion resistance in the marine environment and features two 1/4 in. NPT female connections, so it threads directly onto male-threaded fuel line fittings on both sides. Internally it uses a ball valve mechanism for a positive, easy-turn on/off shutoff. At 4.6 x 3.5 x 2.4 inches and 0.2 pounds, it is compact and lightweight enough to fit tight engine compartments and fuel tank installations. Moeller has built its reputation in marine fuel system components on durable construction and reliable, leak-resistant sealing. This valve is intended as a fuel-line or fuel-tank shutoff point, commonly used where a boat owner or installer wants a manual isolation valve between the tank and the engine fuel supply.

Specifications

• Brand: Moeller
• Manufacturer Part Number: 033303-10
• Connection Type: Female/Female 1/4 in. NPT
• Valve Type: Ball Valve
• Number of Ports: 2
• Material: Brass
• Finish: Brass
• Item Dimensions: 4.6 x 3.5 x 2.4 inches
• Weight: 0.2 pounds
• UPC: 039729333038, 739729333037

Frequently Asked Questions

What connections does the Moeller 033303-10 shut-off valve have? It has two 1/4 in. NPT female connections (female/female), so it threads onto male-threaded fuel line fittings on both sides of the valve.

Is the 033303-10 valve made of brass? Yes, the Moeller 033303-10 fuel shut-off valve is machined from brass, which resists corrosion in marine fuel system use.

How much does this fuel shut-off valve weigh? The Moeller 033303-10 weighs 0.2 pounds.

What are the dimensions of the 033303-10? The valve measures 4.6 x 3.5 x 2.4 inches.

What type of valve mechanism does the 033303-10 use? It uses a ball valve mechanism, giving a positive on/off shutoff with a simple quarter-turn action.

Can I use the 033303-10 to shut off fuel flow to my boat's engine? Yes, the Moeller 033303-10 is a fuel-line shutoff valve designed to isolate fuel flow, such as between a fuel tank and the engine fuel supply.

Is the 033303-10 the same as Moeller's male/female valve? No. The 033303-10 is the female/female 1/4 in. NPT version; Moeller's male/female 1/4 in. NPT valve is a separate part, 033300-10, so check which thread configuration your fuel line fittings need before ordering.

How many ports does the 033303-10 have? The Moeller 033303-10 is a two-port valve, with a female 1/4 in. NPT connection on each side.

What is the thread size on the 033303-10 shut-off valve? Both connections on the 033303-10 are 1/4 in. NPT female threads.

Is the Moeller 033303-10 valve corrosion resistant? Its brass construction and brass finish are resistant to corrosion, which suits it to marine fuel system environments.