Structure length The distance between the inlet and outlet end faces of the valve; or the distance from the inlet end face to the outlet axis. Structural length of straight-through valve The distance between two planes perpendicular to the valve axis at the ends of the valve body passage. Structural length of angle valve The distance between the plane perpendicular to the axis at one end of the valve body passage and the axis of the other end of the valve body. Type of construction The main features of various types of valves in terms of structure and geometry. Through way type The inlet and outlet axes are coincident or…