| 摘要 |
mechanical engineering. SUBSTANCE: respiratory valve is designed for gas space sealing and for adjustment of pressure of petroleum product vapours in reservoirs. Respiratory valve has body with pressure and vacuum gates. Pressure gates are made on pyramid wall of upper part of body, and slope angle of pressure plate plane makes up 15-45 deg. Relative to horizontal axis. Respiratory valve enhances reliability and safety of reservoir operation in higher-humidity and low-temperature regions. EFFECT: improved ecological protection. 1 dwg
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