The brass 90° barbs were made up from two pieces so I could screw them past each other in the block holes. I don't use them any more now as I prefer the Festo style push fittings. the 90° elbows were sourced from a local hydraulics supplier.
Araldite is used purely as a sealing agent, because the threaded barb screws in tightly. I only use the original Araldite, (not Rapid or 5min), as it's much stronger and dries clear, except on my acrylic splitter units where the 5 min stuff seems preferable as it bonds to arylic better. I would never trust any glue of any type, to hold a block together, or barb in, (including silicon sealant).
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