What are these sizes and thread?

[zendriver]

Get what I need to connect the electric fuel pump to the Ford tractor

The two on the right are the fuel filter and fitting that came with a new fuel pump

Two on the left are various sizes of the plumbing that overtime connected the tank to the pump through more than one filter

I have such a short distance between the tank and carb. I have to do some finagling to get the room for a pump and routing of fuel hose

The plan is to use rubber line and clamps

Thanks


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[The Cobbler]

the 2 left ones are inverted flare fittings, the 2 right appear to be National pipe taper male ( NPTM )

 

[RoninB4]

-It would help if you take your dial/digital/Vernier caliper and measure what you have. Measure near the bottom and then near the top of the threaded fitting to determine whether the threads are tapered (NPT) or not (NPS). The flared fittings will need to attach to a similar flared fitting, there's at least two flare angles IIRC so check closely. If the other two fittings are indeed tapered threads they'll probably be fine in a tapered fitting with some pipe sealant on it. Do check the thread count on any of the fittings against what you're going to plumb in. Do you know how dissimilar threads feel when attempting to join by hand? First touch of a wrench means threads are about ruined if it's not a match.

 

[slowtwitch73]

Fuel filter is 1/8 NPT. The ones far left and right also appear to be NPT (tapered) likely 1/8"?

Second one in from rt does not look like NPT.

Usually gas tanks take npt... the second one in from rt may be a brake line fitting that was reused. Maybe 5/16 flare.

 

[no704]

No reason one could not put the pump in a loop if space is tight! Might even be better to not transfer the vibration to the hardline.