Add two barbed fittings on one side, one at the bottom, one at the top. Put a glass tube in between them. Like an old carb'd fuel filter but a bit more classy.
Sight Glass. Put the barbs on all the tanks and make it an option, seal them mechanically though if they dont want them. Could also be a good way to get a coolant tap for other needs.
Like this
Sight Glass. Put the barbs on all the tanks and make it an option, seal them mechanically though if they dont want them. Could also be a good way to get a coolant tap for other needs.
Like this
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