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FESTO減壓閥      LFR-1/8-D-MINI     費斯托三聯件       FESTO上海報價       FESTO過濾減壓閥
減壓閥是用節流方法使出口壓力低于進口壓力，并保持出口壓力近于恒定的壓力控制閥。是通過調節，將進口壓力減至某一需要的出口壓力，并依靠介質本身的能量，使出口壓力自動保持穩定的閥門。從流體力學的觀點看，減壓閥是一個局部阻力可以變化的節流元件，即通過改變節流面積，使流體及流體的的動能改變，造成不同的壓力損失，從而達到減壓的目的。然后亞考控制與調節系統的調節，使閥后壓力的波動與彈簧力相平衡，使閥后壓力在一定的誤差范圍內保持恒定。

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