Product Details
FS20X1 Andair 3/8” Fuel Selector
The FS20x1 is a simple shut-off valve with two positions (ON – OFF) with a 90-degree action between each position. The action is smooth and easy. The safety button is located on top of the lever and must be raised to switch off the fuel. This helps prevent the fuel from being accidentally turned off.
Fittings:
- 3/8” Pipe Fittings
- LH/RH Female (1/4 NPT) (FS20X1-F)
- LH/RH Male (AN6, JIC-6) (FS20X1-M)
On the FS20-1 valve, there are two ports and either port can be used as the inlet or outlet. The fascia plate will come with standard engravings.
View all FS20X Selector Valveshere.
All Andair fuel selector valves are designed to incorporate safety features to prevent inadvertent fuel shut off. Andair fuel selectors are engineered to provide smooth action between each tank selection. The FS20 selectors provide a choice of lower and side fittings. All units can be operated with universal joints and an extension.
Direct to landing page with all FS20X options for comparison.
Frequently Asked Questions
How do I keep contaminants out of my fuel system?
The fuel selector valve works in unscreened fuel. Contaminated fuel can cause selector valve seal damage. When fueling from possibly contaminated fuel sources McFarlane recommends the use of a fuel filter, such as Mr. Funnel or another filtering device, to reduce trash in the fuel system.
What pressure is used to test the fuel selector valves after repairs?
We pressure test our repaired valves to a minimum of 5 psi using precision controlled air pressure and a calibrated low pressure indicator. This pressure is above the normal fuel pressure on the valve and below the limits of the springs in the valve. Each valve is submerged in Stoddard solvent while the air pressure is applied to the valve. The valves are then tested in each position to assure that there are no inter-port or external leaks. Leaks are detected by looking for air bubbles escaping from the valve.
How do I know when to replace or service my fuel selector valve?
The most common indication of external fuel valve leaks is the smell of avgas in the cabin. Most valves are located under the cabin floor. Fuel stain on the valve and drain plug or drain valve or on the belly of the aircraft can also indicate external leakage. External leaks are generally around the actuation valve stem. Internal leaks are detected when the fuel is turned off and fuel continues to drip during fuel system maintenance. Inner port leakage will allow fuel from one tank to leak into another fuel tank. This type leak is difficult to detect. Fuel transfer from one tank to another with the fuel valve selected to one tank only will indicate inner-port leakage. An extended period of time is needed to detect fuel transfer from one tank to another. Generally if internal leakage is detected when servicing the fuel system, it is likely there is also inner-port leakage.
