Fuel Vent Check Valve

I didn't realize the fuel vent lines could be a source of freezing over in icing conditions and I have since installed a little check valve inside the wing root in case the vent line were to get iced over in flight. I inserted the valve and necessary hardware on the existing vent line and it was a pretty quick and easy mod. I did this last April but forgot to post about it. 

I bought the Brass Threaded Check Valve 1/4 Nptf female from McMaster-Carr. 

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