This simple, inexpensive adapter greatly expands the way we can use Tropf Blumat sensors – it makes it completely easy to add them to a conventional drip irrigation systems already in place. It reduces normal 1/4 inch “spaghetti” drip tube to the 3mm line that goes between Tropf Blumat sensors. Be careful about the pressure in your system though – Blumat recommends a maximum of 14 psi and their systems normally operate at much less than that.