The 1/2" compression coupling is used in the installation of the 1/2" drip tubing. The 1/2" compression coupling uses a simple wrist action so that the drip tubing is "walked" into the fittings for a very tight fit. No tools, glue or clamps are required. The coupling provides the user with a key component needed in the layout of the 1/2" drip tubing.
Smarthome does not accept defective returns for this product. You will need to contact the Manufacturer (or Supplier) directly for all warranty issues.