Understanding Tubing Fittings

This article gives a quick description of each type of fitting and also shows photos of each fitting in action.

[A] Spout

Use this to connect the tree to your tubing. Each spout will have TWO sizes listed in its specs:

    • TAP HOLE SIZE — options are either 5/16″ or 1/4″.
      (Note: A 5/16″ spout work with the smaller, 1/4″ tap hole if you use a Spout Adaptor.)
    • TUBING SIZE COMPATIBILITY — options are either 5/16″ or 3/16″

(See part A in the photos below) 

[B] Dropline Tee

This Tee contains three barbed connections. All three connections are hollow. This allows sap to flow from the tree’s dropline into the lateral line. It also allows sap from the upstream trees to pass through the Tee on its way to the collection tank. (See part B in the photos below)

[C] Endline Tee

Just like the Dropline Tee, this Tee contains three barbed connections. However, one of the connections in this Tee is plugged. In other words, only TWO out of the three connections are hollow. This allows sap to flow from the LAST tree’s dropline into the lateral line. (See part C in the photos below)

[D] Endline Hook (OR Endline Loop)

These types of fittings are used to terminate the lateral line at the end tree and hold the tubing tight. (See part D in the photos below)

[E] Saddles

(Not yet pictured here. More description coming soon.)

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