FIELD: aeronautical engineering. SUBSTANCE: drain cock has body 1 with fastening flange 2, seat and plate with sealing member. Body 1 is provided with flow-through ports 6. Spring-loaded rod 8 is mounted coaxially relative to plate. Smooth sleeve 11 secured on rod 8 embraces body 1 and has gasket supported by flange 2. Cock is secured on bottom of tank 13. EFFECT: enhanced reliability. 3 dwg
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