Fig. 8

The main view of the 3D CAD model of outlet connector: (a) – assembled with overall dimension, (b) in exploded view, where: 1) – flexible T 22F-type socket, 2) – HEPA filter, 3) – PEEP valve, (c)—exploded view of the PEEP valve, where: 1) – body of PEEP valve, 2) – piston, 3) – spring, 4) – cap nut, d)—cross-section view of the PEEP valve.