In-Tank pump have check valve?

[WOT]

Does anyone know if the in-tank pump ('05) has a check valve to prevent back-flow? I'd like to plumb both my FASS and the in-tank to the stock fuel filter with a tee so I can run either one. I also need to find out if the FASS has a check-valve.



I was thinking about using this just to be sure on each line:

One Way Check valve for Gas Bio or Diesel fuel 3/8" : eBay Motors (item 150411146984 end time Feb-10-10 12:33:31 PST)

 

[EDankievitch]

I'm not sure about a check valve but there is a pressure relief valve built in to the in tank pump

 

[p-Bar]

It is said you need a seperate draw straw for inline pump

 

[cerberusiam]

If your going to the FASS do it right. Remove the in-tank pump and do the the cannister conversion so you don't have low fuel or suction problems.

 

[WOT]

If your going to the FASS do it right. Remove the in-tank pump and do the the cannister conversion so you don't have low fuel or suction problems.

I already have the FASS (for 1. 5 years or so now). The problem is I'm getting a little annoyed with the noise level when it is cold out. You can't hear it on the highway, but around town in stop and go the constant whine is getting to me. I have the kit to replace the in-tank pump with the pickup, but haven't installed it yet. My thought was that if I plumb both then I could use the in-tank when driving around town and the FASS on the highways, when towing, or when I'm making smoke . The idea of redundancy is nice too.



As a side note, the FASS does seem louder than when I first installed it, but not 100% sure. I did change the filters yesterday (first time) to make sure that a restriction wasn't causing the additional noise. Interestingly, when the heater grids are on the pitch is much less annoying.