VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 01-23-2021, 11:46 AM
abwaldal@gmail.com abwaldal@gmail.com is online now
 
Join Date: Jan 2017
Location: Battle Ground WA
Posts: 177
Default fuel valve help please

OK jumped into the SDS fuel system and ignition job without enough thought as to what I needed.
How does a person get a return line back to fuel tanks if one can't buy a duplexing valve. I am going to pull the tanks to install return ports and lines from SDS regulator.
Seems nobody has the Andair duplex valves in stock or available
Seen Van's has a duplexing valve but know nothing about it. And they don't show a picture of it and if course it's Saturday. Do you????
Oh ya, and I'm not doing this without a duplexing valve.
Need info on van's valve if you have any.
Thanks Art
Cell is 360-607-9163 if you want to text me

Last edited by abwaldal@gmail.com : 01-23-2021 at 12:09 PM. Reason: people needed more info
Reply With Quote
  #2  
Old 01-23-2021, 11:55 AM
agent4573 agent4573 is offline
 
Join Date: Aug 2019
Location: Mountain view
Posts: 273
Default

You're kinda screwed without a duplex valve. You could plumb directly back into a single tank, let's say the left. You'd have to burn all the gas out of the left before switching to the right tank, and then the system is acting mostly as a transfer pump setup. So it may take you 1.5 hours to burn through the left tank and when you swap to the right tank it may take 10-15 minutes before the right tank is empty and the left tank is full again from the return flow. Then you burn through the left again until it's empty. It works, but it's a risky way to fly. You'll either forget to swap tanks in time and run yourself out of gas, or forget to swap tanks in time and start dumping fuel overboard because you're returning into a full tank. Best to just get on the list with Andair direct and wait 12-16 weeks for the correct valve.

The other option is to plumb 2 valves, one for the feed and one for return. Just make sure to swap both on tank changes.
__________________
www.rv7build.com

Last edited by agent4573 : 01-23-2021 at 11:58 AM.
Reply With Quote
  #3  
Old 01-23-2021, 12:10 PM
abwaldal@gmail.com abwaldal@gmail.com is online now
 
Join Date: Jan 2017
Location: Battle Ground WA
Posts: 177
Default

Ya I'm not doing this without a duplexing valve as I don't even want the complexity of a bad system.
Just need info on Van's valve and if they really work.
Thanks Art
Reply With Quote
  #4  
Old 01-23-2021, 12:28 PM
TS Flightlines TS Flightlines is offline
 
Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,737
Default

Art----the Newton V9 valve might work for you, but we havent done a mockup on the RV6/7/9 systems to check the aft fit. WE did a successful install on a RV10. Issue you might have is the clearance between the banjo fittings and the spar, without moving the valve forward. Then you may no be able to use the OE valve covers. The banjo fittings to the wings might also make it pretty tight to pass through the center 2 spar brackets-----oh if you have an early 6 these will be different---
So all of this is a compromise!
Tom
__________________
Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
Reply With Quote
  #5  
Old 01-23-2021, 01:58 PM
rmartingt's Avatar
rmartingt rmartingt is online now
 
Join Date: Nov 2006
Location: Savannah, GA
Posts: 1,092
Default

Have you checked directly with Andair? I ordered one directly through them a couple years ago, and though shipping was slow (and likely slower today) Id bet you can still order one at least.

http://www.andair.co.uk/product/dupl...tor-fs2020-d2/
__________________
RV-7ER - finishing kit and systems installation
There are two kinds of fool in the world. The first says "this is old, and therefore good"; the second says "this is new, and therefore better".
Reply With Quote
  #6  
Old 01-23-2021, 03:03 PM
abwaldal@gmail.com abwaldal@gmail.com is online now
 
Join Date: Jan 2017
Location: Battle Ground WA
Posts: 177
Default checking with source

Actually I didn't check with Andair. But I've heard of 6-8 weeks times 2 waiting period.
So, that said I have now reached out to them as to my needs. I'll update as to my success. Later. Maybe, if I wasn't so impatient I would have just waited till Monday to contact them.
Van's says they have a duplexing valve and was looking for info on that. But I really do not have an opinion on either just cutting and installing the other stuff.
Thanks Art
Reply With Quote
  #7  
Old 01-23-2021, 10:12 PM
Joeyo68 Joeyo68 is offline
 
Join Date: May 2015
Location: Frankston, Victoria, Australia
Posts: 128
Default One for sale on facebook, Australia.

Click image for larger version

Name:	1478C4D3-B864-41A1-97EC-A2471BD6AAC3.png
Views:	47
Size:	4.76 MB
ID:	7361

Check out Aviation Buy Sell Swap Australia.
Seller is Peter Costick
__________________
Joe
Flying friends RV7A
Built RV7 empennage.
Building wings done - minus glass and lights.
Building Fuselage
Reply With Quote
  #8  
Old 01-23-2021, 11:00 PM
Ralph Inkster Ralph Inkster is offline
 
Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 1,250
Default

Quote:
Originally Posted by TS Flightlines View Post
Art----the Newton V9 valve might work for you, but we havent done a mockup on the RV6/7/9 systems to check the aft fit. WE did a successful install on a RV10. Issue you might have is the clearance between the banjo fittings and the spar, without moving the valve forward. Then you may no be able to use the OE valve covers. The banjo fittings to the wings might also make it pretty tight to pass through the center 2 spar brackets-----oh if you have an early 6 these will be different---
So all of this is a compromise!
Tom
I have a Newton SPRL V3-3P in my RV6. Dual SDS, works just fine. The SPRL V3-3P-C or V9-3-P would also work fine. I should state that Im old school & bend up aluminum lines & not afraid to whip up custom bracketry if needed (in this case wasnt necessary)
I have used Andair duplex valves on other SDS projects, nothing wrong with them either.
__________________
Ralph
built a few RVs, rebuilt a few more, hot rodded more, & maintained/updated a big bunch more
Reply With Quote
  #9  
Old 01-24-2021, 11:25 AM
abwaldal@gmail.com abwaldal@gmail.com is online now
 
Join Date: Jan 2017
Location: Battle Ground WA
Posts: 177
Default australia

Morning Joe.
Never thought one would show that far from Battle Ground Wa. USA
Maybe I'll take a Sunday drive. Ha Ha.
I actually looked on Facebook and tried to find the post but had no luck.
Thanks. I am going to call Vans tomorrow to see if theirs will work. I'll post results.
Art
Reply With Quote
  #10  
Old 01-24-2021, 12:43 PM
N427EF N427EF is offline
 
Join Date: Oct 2005
Posts: 1,529
Default Try this

I have a constant flow return line on my RV-10 and chose to use a single Andair for supply and Van's supplied valve for the return line.
They are arranged next to each other and anytime I switch fuel tanks, I switch both of them. It is an extra step to switch 2 valves but this set up allows for some experimenting with fuel transfer ect. in case you ever want to try mogas, as I do.
My reasons for avoiding the 4 plex Andair was the hefty price tag but more so the
clusterf..k of fuel lines terminating at that one location. Would have made for a very tight and difficult installation in an RV-10 tunnel.
In an RV-7 you don't have a tunnel and installation might be easier, just another option to consider.
__________________
Ernst Freitag
RV-8 finished (sold)
RV-10 Flyer 700 plus hours
Running on E10 mogas
Don't believe everything you know.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 10:02 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.