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JJ41B氨用(yong)截止閥(fa)閥(fa)體的結(jie)構形式(shi)有直(zhi)(zhi)通(tong)式(shi)、直(zhi)(zhi)流式(shi)和直(zhi)(zhi)角式(shi)。直(zhi)(zhi)通(tong)式(shi)是較(jiao)常(chang)見(jian)的結(jie)構，但(dan)其流體的阻力大。直(zhi)(zhi)流式(shi)流體阻力較(jiao)小，多用(yong)于(yu)含(han)固體顆粒或粘度大的流體。直(zhi)(zhi)角式(shi)閥(fa)體多采用(yong)鍛造，適用(yong)于(yu)較(jiao)小通(tong)經、較(jiao)高壓力的的截止閥(fa)。 中(zhong)通(tong)法蘭為(wei)方形結(jie)構，閥(fa)桿采用(yong)間桿連接