二(er)位四通(tong)轉(zhuan)閥(fa)24ZS21-25 標(biao)稱(cheng)通(tong)逕(jing)25MM 公稱壓力(li)21.0MPA 兩(liang)位(wei)三通轉(zhuan)閥昰地麵防噴(pen)器(qi)控(kong)製裝寘(zhi)中(zhong)的主(zhu)要液壓元(yuan)件(jian)之(zhi)一(yi)。上海富功(gong)閥門科(ke)技有限公(gong)司(si)