Sobiva konstruktsiooniga õhkpadjad on nt paljudes riikides veetervise ja -ohutuse eeskirjadega seadusega nõutud ning see on mõõtevahendis tagasivoo vältimise lihtsaim vorm.
Air gaps of appropriate design are legally required by water health and safety regulations in many countries, and is the simplest form of a backflow prevention device.
Online Language Learning Tool SkELL allows users to search for phrases in sentences, collocates and similar words. These examples have been automatically selected and may contain errors.
