Another instructable dedicated to gardening that is my passion seasonal
It's a simple tap on "strozzo" that can be useful when water the garden for not wasting water. it is simple to build, super cheap (I used all waste material and as such can be constructed by anyone with a little handworks and at no cost.
the operation is understood by looking at the figures:
1)handle released: through the elastic back the tube remains throttled and the water does not pass.
2)handle pressed: the bottleneck opens the water flows