Mocal One Way Check Valve - experience

[Joacim J]

Do you have any experience of this Mocal One Way Check Valve (flap type) (https://www.demon-tweeks.com/se/mocal-one-way-check-valve-372351/ ).
"... flap valves offer no resistance to flow ..."

I am thinking of fuel tanks with the following approach

Tank #1 - fuel pump filling the catch tank and so on
Tank #2 - fuel return to this tank

Then I would like to have the tanks to have equal amount of fuel.

Would it work to have this one-way-valve to the bottom om each tank, like:

Tank #2 ===>> [one-way-valve] ===>> Tank #1

or would that valve have too much resistance to make the fuel to be "synchronized"?

 

[Andy Green]

Hi Joacim,
I've had one of those in my fuel system for the last 3 years without any issues

Regards,
Andy

 

[Joacim J]

Hi Joacim,
I've had one of those in my fuel system for the last 3 years without any issues

Regards,
Andy

Thanks Andy, do you use it in this type of "free flow synchronization" as described above or used with a pump?

 

[Andy Green]

Hi Joacim,
the one I used came from Speedflow and in my application I used it to prevent a reverse flow into my header tank
In your proposed application, this type of valve should be fine, but I'd be looking at either a -8 or -10 valve to minimise any restrictions
Regards,
Andy

 

[Terry Oxandale]

I've used check valves for both my tanks wtihout every having problems,, but added an additional manual Perterson ball valve inline as well. Typically, I run off the passenger-side tank, and it refills the passenger-side tank (recirculates), but when swapping fuel pumps to driver-side tank (my "get me to a station" reserve if needed), it continues to recirculate only again, back to the passenger-side tank (so it also acts as a reserve transfer of fuel whenever it is on). On rare occasions I find a need to manually valve it to recirculate back to the driver-side tank, and that's where the ball valves come in handy.