The transition is a functional and practical fitting element that provides a combination of different diameter pipes to the inside 20/15. This passage of "Inner Desert" has 20 mm foreign gear (steppe) and 15 mm internal gear (internal), which provides an ideal solution in combining various diameter system components. The transition to a sustainable material (usually a brass or high-strength polymer) shows excellent tolerance against high pressure and temperature volatility in water, gas, heating and plumbing systems. This passage, which is mainly used in households, industrial facilities and water supply lines, responds to high quality standards in terms of leaks and longevity. Thanks to the compact size, it is also suitable for installation in narrow areas.