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Old 07-24-2019, 10:44 AM
JoopSJ's Avatar
JoopSJ JoopSJ is offline
Join Date: Dec 2016
Location: The Netherlands
Posts: 78
Default Electrical duplex fuel selector valve

I just saw that Andair is now offering an (expensive) electrically operated fuel selector valve.
Looks a bit bulky but the advantage to me seems that you can relocate the valve and get rid of the manual selector.

Me myself was thinking about relocating the valve under the pilot seat so I can have more space in the fuelpump tunnel. But that seems like a wild idea as it would require rerouting the fuel lines.

This one is 28v but the 14 v is following soon.

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Last edited by JoopSJ : 07-24-2019 at 10:51 AM.
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Old 07-24-2019, 12:16 PM
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RONSIM RONSIM is offline
Join Date: Feb 2008
Location: Largo, FL
Posts: 1,049
Default Electrical componenst fail more often than manual ones

Just what you need --- introduce additional points of failure in your fuel system --- no thank you --- (I had electric valves on my Twin Comanche tip tanks -- they worked "most" of the time!)

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Old 07-24-2019, 01:06 PM
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airguy airguy is offline
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,318

Nope, no thank you...
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2021 dues paid
N16GN flying 750 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, IFD440
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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Old 07-24-2019, 01:59 PM
jacoby jacoby is offline
Join Date: Jul 2018
Location: WNC
Posts: 290

It's here: FS2020 Electric Fuel Selector and only rated to 200 HP.

It looks like their regular fuel selector + a stepper motor to rotate it. It's an interesting idea since opens up moving the valve anywhere you want. It doesn't have to be within reach of the pilot.

They also announced a Serial Duplex Pump for 3/8? Fuel Lines

Both run about $900/ea.
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Old 07-24-2019, 03:45 PM
echozulu echozulu is offline
Join Date: Mar 2018
Location: Ocean City, MD
Posts: 84

They went through the expense of making it electric but didn't add a timed tank switching function? I think that's what would make it have some value beyond being a novelty or a potential point of failure. If you could automate the tank switching either based on fuel flow information or just a simple timer I think it would provide some added value and safety compared to a conventional valve. Just have an override for takeoff and landing.
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Old 07-24-2019, 08:18 PM
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rmartingt rmartingt is offline
Join Date: Nov 2006
Location: Savannah, GA
Posts: 1,090

I almost wonder if this isn?t intended for UAV applications... picture a converted GA airframe with an EFI engine (IIRC SDS sells lots of systems to military suppliers) and that would explain it. After all, no pilot on board to move the handle...

I have one of their ?regular? duplex valves, and locating was a bit of a bear since I was trying to avoid having any hard 90s in the suction line. But it?s a nice valve.
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Old 07-24-2019, 08:21 PM
rapid_ascent rapid_ascent is offline
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Location: Dublin, CA
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Yeah I'll stick with the manual non-intelligent version
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Old 07-25-2019, 12:03 AM
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rv8ch rv8ch is offline
Join Date: Feb 2005
Location: LSGY
Posts: 3,560
Default Interesting innovation

This is the kind of innovation that I really enjoy seeing. Imagine it being controlled by your EFIS so that tank switching is automatic, or automatic switching if fuel levels get low, or fuel pressure drops.

Clearly this is not for everyone, but it's great to see small companies like this bringing new products to the market.
Mickey Coggins
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Old 07-30-2019, 01:12 AM
fdeppieri fdeppieri is offline
Join Date: Jun 2017
Location: Italy - Venice -
Posts: 36

I like the idea to relocate the fuel valve as well as most of the fuel management items outside.
I?m evaluating to put the gascolator, fuel pump and valve between the wing and the fuselage, keeping the tunnell free.
I?m not sure all these items can be placed in that place, but I would like a lot.
This valve provides this possibility.

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Old 07-30-2019, 07:25 AM
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DanH DanH is online now
Join Date: Oct 2005
Location: 08A
Posts: 9,804

Routing fuel lines to the cockpit may be impractical, given an unusual or large airframe design. In that case, a remotely actuated valve may have value.

An RV is not such a design.
Dan Horton
Barrett IO-390
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