Moeller Anti-Siphon Valve 033808-10, 3/8 Inch Barb x 3/8 Inch NPT, Brass, 15 Calibration

The Moeller 033808-10 is a brass anti-siphon valve built to combine anti-siphon protection with a convenient hose barb design. Federal law requires anti-siphon protection on permanent fuel tank installations if the hose dips below the top of the tank, and this valve is designed to meet that requirement while providing a secure connection point between the fuel line and the tank fitting. It features a 3/8 inch hose barb outlet paired with a 3/8 inch NPT (National Pipe Tapered) threaded inlet, giving installers a threaded connection on one side and a barbed hose connection on the other.

This valve carries a 15 Calibration, which yields 15 inches of vertical height protection and is intended for use on engines rated 200 horsepower and above. It is constructed of brass with a brass exterior finish, has 2 ports, and is rated for a maximum operating pressure of 200 pounds per square inch. The valve meets ABYC H-24 specification. It is a straightforward, drop-in style component for boat builders and repair technicians installing or replacing anti-siphon protection on gasoline-powered boats with permanent fuel tanks.

Specifications

• Brand: Moeller
• Manufacturer Part Number: 033808-10
• Product Type: Anti-Siphon Valve
• Material: Brass
• Barb Size: 3/8 inch
• NPT Thread Size: 3/8 inch NPT
• Thread Type: National Pipe Tapered
• Connector Type: Threaded, Barb
• Number of Ports: 2
• Calibration: 15 Calibration (15 inch vertical height protection)
• Maximum Operating Pressure: 200 pounds per square inch
• Recommended Engine Power: 200 HP and above
• Specification Met: ABYC H-24
• Item Dimensions: 2.05 x 5.65 x 1.1 inches
• Weight: 0.15 pounds
• Finish: Brass
• UPC: 739729011157

Frequently Asked Questions

What is the Moeller 033808-10 used for? The Moeller 033808-10 is a brass anti-siphon valve installed in the fuel line to prevent fuel from siphoning out of a permanent fuel tank if the hose is damaged, a requirement under federal law when the hose dips below the top of the tank.

What size fittings does the 033808-10 have? This valve has a 3/8 inch hose barb outlet and a 3/8 inch NPT threaded inlet, with National Pipe Tapered threads on the threaded side.

What is the calibration rating on this valve? The 033808-10 carries a 15 Calibration, which yields 15 inches of vertical height protection and is intended for engines rated 200 horsepower and above.

What material is the Moeller 033808-10 made of? It is made of brass, including the exterior finish, giving it corrosion resistance suited to marine fuel system use.

What is the maximum operating pressure of this anti-siphon valve? The 033808-10 is rated for a maximum operating pressure of 200 pounds per square inch.

How much does the Moeller 033808-10 weigh? The Moeller 033808-10 anti-siphon valve weighs 0.15 pounds.

What are the dimensions of the 033808-10 valve? Item dimensions for the 033808-10 are 2.05 x 5.65 x 1.1 inches.

Does this valve meet any industry standards? Yes, the Moeller 033808-10 meets ABYC H-24 specification for anti-siphon protection.

How many ports does the 033808-10 have? The valve has 2 ports, one threaded NPT connection and one barbed hose connection.

Is an anti-siphon valve like the 033808-10 legally required? Federal law requires anti-siphon protection on permanent fuel tank installations if the hose dips below the top of the tank, which the 033808-10 is designed to provide.

What is the difference between the 033808-10 and Moeller's other calibration valves? The 033808-10 uses a 3/8 inch barb and 3/8 inch NPT connection with a 15 Calibration for engines 200 HP and above, differing in barb/thread size and calibration from Moeller's other anti-siphon valve variants.

What connection type does the 033808-10 use? The 033808-10 uses a combination threaded and barb connector type, with NPT threads on one end and a hose barb on the other.