FIELD: gas mask equipment.
SUBSTANCE: invention relates to parts of gas masks, full-face masks and half-masks. Rubber corrugated tube for connection of external bayonet attachment of filtering means of individual respiratory protection with external threaded attachment of filter, having an external round thread with a nominal diameter of 40 mm, a thread pitch of 4 mm and a thread rounding radius of 1.25 mm, contains a rubber corrugated hose, to which angular adapter is connected by means of glue and metal clamps in upper connecting part, and in the lower connecting part a coupling nut, made with an internal round thread with a nominal diameter of 40 mm, a thread pitch of 4 mm, a thread rounding radius of 1.25 mm, with a nipple ring and the nipple itself, wherein the angular adapter is made with a bayonet connection, which is a hole in the form of a circle with diameter of 21.5 mm with three trapezoidal projections, two of which have a larger base of 8 mm, third, larger base of 5 mm, wherein the trapezoidal projections are located at angle of 120° relative to each other, wherein the smaller bases of the trapeziums of the three projections are made on the outer side of a circle having diameter of 21.5 mm.
EFFECT: providing a safe and tight connection between the front part of the filtering RPE having external bayonet attachments of 3M standard, JETA SAFETY and their analogues with a threaded filter attachment, having external thread with diameter of 40 mm and thread parameters corresponding to requirements of GOST 8762-75.
1 cl, 9 dwg
