Typically used to close-off the water supply at the end of the 1/2-in Poly Tubing lines and has a removable threaded Cap to flush the line or to open the end to winterize.
To attach the 1/2-in Poly Tubing first push the collar back to expose the barb with a built in O-ring.
Push and wiggle the 1/2-in Poly onto the fitting and under the collar until snug.
While holding the Poly Tubing with 1 hand, turn the ears of the collar in a left counter-clockwise motion to tightened and lock onto the 1/2-in Poly Tubing.
Unthread the End Cap to open the end of the PolyTubing line to drain or flush the water out.
This fitting can be uninstalled easily by unthreading the collar in a clockwise motion then by pulling off the 1/2-in Poly Tubing.
If you find it difficult to get the 1/2-in Poly Tubing onto the fitting, use a little olive oil or vegetable oil by wiping it on the inside of the wall of 1/2-in Poly then push in the fittings.
