| 摘要 |
FIELD: mechanical engineering. SUBSTANCE: fuel dispensing cock has follow-up hydraulic booster of main valve in, which vacuum automatic cutoff device is made in form of ejector with inlet nozzle, chamber with ball actuating member and outlet hole greater inlet outlet hole of nozzle and is installed in outlet valve of control valve of hydraulic booster brought out into outlet end of cock drain pipe. Control lever lock is made under cock handle so that it locks the cock when lever is released in operating and non-operating position and unlocks the cock when lever is gripped under its own weight. EFFECT: improved operation reliability and ecological safety. |
