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Y43X固定比(bi)例(li)式減(jian)壓(ya)(ya)閥(fa)主要由閥(fa)體、進口壓(ya)(ya)蓋、活塞、出口壓(ya)(ya)蓋及O型(xing)圈、密封墊等零件組成(cheng)。比(bi)例(li)式減(jian)壓(ya)(ya)閥(fa)是利(li)用(yong)閥(fa)內浮(fu)動(dong)活塞兩端不同(tong)的截面積壓(ya)(ya)力差從(cong)而改變進水與出水的壓(ya)(ya)力狀(zhuang)況，達到減(jian)壓(ya)(ya)目的。比(bi)例(li)式減(jian)壓(ya)(ya)閥(fa)結(jie)構嚴(yan)謹、新穎、運行(xing)流(liu)暢、體形輕巧、便(bian)于(yu)安裝、減(jian)壓(ya)(ya)比(bi)例(li)穩(wen)定，即減(jian)“動(dong)壓(ya)(ya)”又減(jian)“靜壓(ya)(ya)”，材料采(cai)用(yong)全銅或不銹(xiu)鋼，適用(yong)于(yu)清潔水和(he)海水，不怕結(jie)垢和(he)銹(xiu)蝕。