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Old 12-12-2013, 06:54 AM   #207 (permalink)
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Need to seal the fuel pump to the aluminum tank. It is a modular pump set on springed legs with a plastic hat.

The opening in the tank needs to be 5" diameter for the setup to drop in and the OEM set up has a flange built in to the tank so I cannot use it.
I have not found a fuel flange for a 5 " hole so I need to make one. While searching I found schedule 80 PVC flanges that might work. Is there any issue using PVC flange and a Viton gasket on the wet side? I was thinking I could solvent weld PVC bolts to the inner flange to seal them. I think the PVC bolts could handle the minimal torque needed to seal the gasket.

The alternative is make one from scratch out of 1/4" steel and weld bolts to the inner ring.
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