| 摘要 |
mechanical engineering; fittings mounted in various objects, pipe lines, etc.; bottom valves of fuel tanks, transport fuel tanks in particular. SUBSTANCE: according to first version, bottom valve of fuel tank has shut-off member made in form of hollow cylinder with calibrated orifices in its bottom and with rod kinematically linked with shaped shaft of manual drive. Bottom of shutoff member is provided with bearing lug with seat used as step bearing for rod equipped with bearing bush. Valve proper is provided with unit for locking the shut-off member in two extreme positions. According to second version, bottom valve of fuel tank has shut-off member with calibrated orifices in its bottom and manual drive rod. Bottom of shut-off member is provided with bearing lug freely adjoining the rod having slot for retainer on its lateral surface. EFFECT: possibility of dampening shut-off member and automatic closing of valve and disconnection of rod in emergency. 10 cl, 5 dwg
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