Katerina Swanson
If you're looking to upgrade your fuel line to 3/8, you'll need to find a fuel selector valve with 3/8 ports. This is because the size of the ports on the fuel selector valve must match the size of the fuel line. While some people have suggested that using a 5/16 fuel line is sufficient, even for high-performance engines, others have argued that a 3/8 fuel line will provide better flow and is worth upgrading to. Finding a fuel selector valve with 3/8 ports can be challenging, and you may need to look for used or aftermarket options.
| Characteristics | Values |
|---|---|
| Size | 3/8" |
| Material | Brass, stainless steel |
| Use | Fuel tank selector valve, fuel shut-off valve |
| Vehicle type | Boat, motorcycle, truck |
| Brand | Moeller, Horiznext, TR Diesel |
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What You'll Learn
Moeller Marine Fuel Tank Three-Way Valve
Moeller Marine has been the industry standard in fuel system design and construction for more than 25 years. Their reputation is built on innovative engineering, quality construction, and award-winning service.
The Moeller Marine Fuel Tank Three-Way Valve is a 3/8" NPT valve for boats that is OEM certified and ABYC H-24 compliant. It is constructed of brass and provides anti-siphon protection. This valve is designed to connect two permanent tanks to a single motor, allowing withdrawal from one tank at a time.
The valve has four positions: draw from tank A, draw from tank B, or close both. The handle has a pointer that indicates which tank is being drawn from, but some customers have noted that the pointer can be confusing or inaccurate. This can be solved by properly labelling the handle to indicate which tank is being used.
The Moeller Marine Fuel Tank Three-Way Valve has received positive reviews from customers who find it to be of good quality and working as intended. It is recommended for those seeking a valve for tank selectors, as it has a solid feel.
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Horiznext 3/8 inch brass mini shut-off valve
The Horiznext 3/8 inch brass mini shut-off valve is designed for use with water, fuel, gas, oil, propane, and other liquids and gases. It is made of forged brass, which offers better corrosion resistance than carbon steel. This valve is a ball valve, meaning it uses a spherical disc to control the flow between pipes, tubes, or hoses. It is designed for pneumatic circuits and features a quick connect/disconnect.
The Horiznext valve has received positive reviews from customers, who find it functional and well-built. They appreciate its good value for money, design, ease of use, and sleeve length. Some customers have mentioned that the valve is small enough to fit into tight areas, making it a great size for inline shutoff applications. The quality, fit, and finish have also been praised, with some noting that it is made of high-quality metal rather than cheap plastic.
The Horiznext valve is sold in a set of two, with each valve measuring 3/8" hose x 3/8" hose ID. This valve is designed for use with 3/8" ID hoses. It is important to ensure that your hose size matches the valve size for a proper fit. The package also includes clamps, which customers have found useful.
When considering a fuel selector valve for a 3/8" fuel line, it is important to note that finding a valve with the correct port size can be challenging. While some options are available, such as the Moeller Marine Fuel Tank Three-Way Valve, it may be necessary to consider alternatives such as using brass reducers to step down from 3/8" to 5/16" and then back up to 3/8". It is recommended to check forums and customer reviews for additional insights and recommendations.
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3/8 Inline Fuel Valve Fuel Shut Off Valve
The 3/8" Inline Fuel Valve Fuel Shut Off Valve is designed for use with a 3/8" I.D. fuel line. It features a ball valve design that keeps it leak-proof and reliable. The all-metal construction is of high quality and will last for years. This valve is easy to install in small spaces and can be used to shut off the fuel supply to an auxiliary engine.
A similar product is the Horiznext 3/8 inch brass mini shut-off ball barb valve, which is suitable for water fuel hose, gas line, RV air tubing, and straight inlet manifold petcock. This product comes with clamps and a kit.
A three-way valve option is the Moeller Marine Fuel Tank Three-Way Valve, which is made of brass and designed for boat fuel flow. This valve has four positions: draw from tank A, draw from tank B, or close both. It is important to note that the pointer on the handle of this valve does not always indicate the correct tank, but this can be mitigated by knowing ahead of time what position does what.
When considering a fuel selector valve for a 3/8" fuel line, it is worth noting that finding a NOS 3/8" selector valve may be challenging and expensive. An alternative solution is to use brass reducers to step down from 3/8" to 5/16" and then back up to 3/8".
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3-port fuel selector valve for 3/8 fuel line
A 3-port fuel selector valve is used for dual-tank setups, allowing users to switch between two fuel tanks. While 3-port fuel selector valves are available for 3/8" fuel lines, they can be difficult to find, with many valves marketed as 3/8" actually being 5/16".
Moeller Marine Products offers a 3-way valve with 3/8" ports made from brass. This valve is designed for use with boat engines, and customers have reported that it works well for tank selectors, with a solid feel and good build quality. However, some customers have noted that the pointer on the handle does not indicate the correct tank, which can be confusing.
Another option for a 3-port fuel selector valve for 3/8" fuel lines is the NAPA part with the number 2-2057. However, it may be necessary to wire this valve through a relay and fuse to prevent the solenoid coil from burning out.
It is also possible to use a 5/16" valve with a 3/8" fuel line by using brass reducers to step down from 3/8" to 5/16" and back up again. This solution may not be the most elegant, but it can be a workable option when a 3/8" valve is not available.
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Fuel selector valves for 5/16 fuel lines
Fuel selector valves are designed for applications that involve in-tank fuel pumps, not exceeding the rated pressure of the valve. Motorized valves are driven into position by an electric motor and are stable in either position. They only draw power for a fraction of a second during transfer.
Fuel selector valves for 5/16" fuel lines are available, although some users have noted that it can be challenging to source these parts. One individual shared their experience of using brass reducers to step down from 3/8" to 5/16" and back up as a solution when they were unable to find a 3-port selector valve for a 3/8" fuel line.
It's important to consider the specific requirements of your vehicle when selecting a fuel selector valve. Some factors to keep in mind include the horsepower of your engine, the RPM at which it operates, and the size of the sender pick-up line. For example, one user questioned the necessity of a 3/8" valve over a 5/16" one, noting that for a street truck with dual tanks and stock fuel pumps, a 5/16" valve should suffice.
When replacing fuel tanks and lines, it is recommended to use the same size as the stock unit to ensure a smooth flow. For instance, if the stock sending unit, lines, and fuel pump fittings are 3/8", it is advisable to maintain consistency by using 3/8" selector valves as well.
In summary, fuel selector valves for 5/16" fuel lines are available, but the availability and suitability of these valves depend on the specific requirements of your vehicle. It is essential to consider factors such as engine specifications, fuel system components, and stock configurations when making a selection.
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Frequently asked questions
You will need a 3/8-inch fuel selector valve for a 3/8 fuel line.
You can buy a 3/8-inch fuel selector valve from Amazon or eBay.
Yes, you can use a 5/16-inch fuel selector valve as an alternative. You can also use brass reducers to step down from 3/8-inch to 5/16-inch and back up.
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