Sylvie Willis
A fuel tank selector valve is a component of some vehicles that allows the driver to choose which fuel tank to draw fuel from. It is typically found in vehicles with multiple fuel tanks, such as certain models of the Ford F-150. The selector valve can be operated manually or electrically, and it plays a crucial role in ensuring the vehicle's fuel system functions properly. When tanks are full, for example, the return line dumps fuel from the rear tank to the front tank, causing it to overflow if the selector valve is not functioning correctly.
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What You'll Learn
Fuel Tank Selector Valves in Ford F-150 trucks
The fuel tank selector valve in a car allows for the regulation and movement of fuel between the front and rear tanks. When one valve is switched on, it opens one fuel tank and closes the other, and vice versa. This is done through the use of a selector switch.
The Ford F-150 is a truck that has been in production since 1975 and is known for its durability and versatility. Over the years, there have been several iterations of the Ford F-150, with some models featuring dual fuel tanks. For these specific models, a fuel tank selector valve is necessary to switch between the two tanks.
Owners of the 1985/86 F150/350 models have reported issues with their fuel tank selector valves. These trucks feature either a 3-port or 6-port fuel tank selector valve, both of which are known to fail without notice. The 3-port valve is marked as E57B-9F271-AA, while the 6-port valve is marked as either E57B-9F271-BA or E67B-9F271-AA.
For those seeking replacements, Advance Auto Parts offers four different fuel tank selector valves for the Ford F-150, with prices starting at $77.99. Additionally, Amazon offers a replacement reservoir fuel tank selector valve assembly that is compatible with the 1989-1997 models of the Ford F-150, F-250, and F-350. This product comes with a lifetime warranty and is designed to replace the part number F1UZ-9B263-B, commonly found in these vehicles.
It is important to note that some owners of the Ford F-150 have reported issues with the original '86-89 dual-tank system, considering it one of Ford's worst designs. These individuals have opted to redesign their truck's fuel lines or swap them for the '90-04 system, which is a more expensive and challenging option.
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Selector Valves with 3 or 6 ports
A fuel tank selector valve is used in applications that involve in-tank fuel pumps. Motorized valves are driven into position by an electric motor and are stable in either position. Selector valves with 3 or 6 ports are used in engines that require a fuel return or spillback. These valves are commonly used in the trucking and marine industries, as well as in the manufacture of diesel-generating plants. They are generally recommended for use in gasoline, oil, air, and water systems.
The number of ports on a fuel selector valve depends on the vehicle's fuel system. If the vehicle does not have return lines, a 3-port valve is typically used. The pump and carburettor on these systems usually have one line in and one line out. The 3-port valve is suitable for engines with regular engine-mounted pumps and carburettors.
On the other hand, vehicles with fuel return lines to both tanks require a 6-port valve. This includes diesel engines, fuel-injected trucks, and certain Ford F150 models from 1985/86. The 6-port valve is a pressure-activated plastic valve, while the 3-port valve is a solenoid.
It is important to note that the High-Density (HD) and Low-Density (LD) distinction is not relevant in determining the number of ports. Instead, the deciding factor is the presence or absence of return lines in the fuel system. HD vehicles before EFI (Electronic Fuel Injection) will not have 6-port valves as they lack return lines.
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Selector Valves with electrical connections
A fuel tank selector valve is a type of directional control valve that allows you to direct the flow of fuel to different parts of your system. Selector valves are commonly used in applications where you need to choose between two or more different circuits, such as when operating a car with multiple fuel tanks.
Some selector valves have electrical connections and are known as motorized electric fuel pump selector valves. These valves are controlled by an electric current and can be used to direct the flow of fuel in a vehicle. For example, in a car with two fuel tanks, the selector valve may direct the flow of fuel from the rear tank to the front tank when the rear tank is full.
The 1985/86 Ford F150/350 is an example of a vehicle that may have a motorized electric fuel pump selector valve. This vehicle has two options for the fuel tank selector valve: the E5TZ9189A, which is a 3-port valve, or the E5TZ9189B, which is a 6-port valve. Both of these parts are known to fail without notice, and it may be difficult to find a replacement.
It's important to note that not all fuel tank selector valves have electrical connections. Some, like the one mentioned in a forum post about the 1986 Ford F-150, have 6 ports and a canister filter at the bottom but no electrical connections.
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Selector Valves with fuses
A fuel tank selector valve is used to switch between multiple fuel tanks in a vehicle, allowing the driver to choose which tank is currently being used to power the engine. Selector valves are also used in aircraft hydraulic systems, where they play a crucial role in controlling the flow of fluid and maintaining the desired pressure levels.
Now, when it comes to selector valves with fuses, there are a few things to consider. Firstly, fuses are safety devices designed to protect electrical circuits from overload or short circuits. In the context of selector valves, fuses can be used to protect the electrical components associated with the valve's operation. This is particularly important in hydraulic systems, where high fluid pressures are common.
For example, in aircraft hydraulic systems, selector valves are often used in conjunction with pressure relief valves. These relief valves are a type of fuse that helps protect the system from excessive pressure. When the pressure in the system exceeds a safe threshold, the relief valve opens, allowing fluid to escape and reducing the pressure. This prevents damage to the hydraulic system and its components, including the selector valve itself.
In addition to pressure relief valves, there are other types of fuses that can be used in conjunction with selector valves. For instance, automatic resetting fuses are designed to shut off the flow of fluid when the volume passing through becomes excessive. Once the excess pressure is relieved, these fuses automatically reset to their open position, allowing normal fluid flow to resume. This type of fuse is commonly used in fluid power systems to ensure safe and efficient operation.
Furthermore, the specific type and design of the selector valve with a fuse will depend on the application and system requirements. Selector valves come in various forms, including poppet-type, spool-type, piston-type, rotary-type, and plug-type. The number of ports on the valve can also vary, with three-port and six-port valves being commonly mentioned in forums. It is important to select the appropriate type of valve and fuse combination to ensure the safe and effective operation of the system.
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Manual vs. motorized Selector Valves
A fuel tank selector valve is used to switch between multiple fuel tanks in a vehicle. It is an essential component for vehicles with multiple fuel tanks, allowing the driver to select which tank is currently being used.
Now, when it comes to choosing between a manual and a motorized selector valve, there are several factors to consider. Both have their advantages and are suitable for different situations. Here is a detailed comparison between the two:
Manual Selector Valves
Manual selector valves are the traditional type of selector valves that are operated by hand. They consist of a lever or handle that is manually turned to open or close the valve. These valves are simple to use and require no external power source for operation. They are ideal for applications where the valve does not need to be frequently operated or where precise control is not necessary, such as residential plumbing systems or small-scale industrial processes.
Manual valves are generally more affordable than motorized valves and have a long track record of reliable operation with minimal maintenance requirements. They are also suitable for small-scale applications and low-flow scenarios. However, they may not be suitable for situations that require precise control or frequent operation.
Motorized Selector Valves
Motorized selector valves, on the other hand, are equipped with an electric or pneumatic actuator that automates the process of opening and closing the valve. These actuators can be controlled remotely, allowing for precise and automated flow control. Motorized valves are ideal for applications where frequent operation or remote control is required, such as large-scale industrial processes, HVAC systems, or aircraft de-icing.
Motorized valves offer several advantages over manual valves. They can handle higher pressures and flow rates, maintain a steady flow even with a pressure drop, and provide a higher flow coefficient (Cv). They are also easily integrated into automation systems and may have lower total operating costs since they don't require continuous power to maintain their position.
However, motorized valves are generally more expensive than manual valves of the same size. They may also lack manual override options in case of system failure and can be susceptible to clogging if the fluid or gas contains particulate matter or debris. Additionally, the rapid opening and closing of some motorized valves can create a clicking sound, which may be undesirable in certain environments.
In conclusion, both manual and motorized selector valves have their own set of advantages and are suitable for different applications. When making a decision, it is important to consider the specific requirements of your application, including the need for precise control, remote operation, frequency of operation, cost, and maintenance.
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Frequently asked questions
A fuel tank selector valve allows the user to switch between multiple fuel tanks.
There are manual and motorized electric fuel tank selector valves. Motorized electric valves may be pressure-activated and can have 3 or 6 ports.
Fuel tank selector valves are available for purchase from automotive retailers such as Ford, Amazon, and AutoZone.
