The IP Code (“Protection Rating”) consists of two digits (e.g. IP65) that define the degree of protection for the system in question. The term “system” refers to the coupling of pipes and fittings; the higher the figure, the higher the protection level. The first digit varies from 1 to 6 and defines the level of protection against solids (powder); the second is from 1 to 8 and defines the level of protection against liquids (water drops, splashing, immersion).