雙由令UPVC塑料三通球閥作用：
       雙由令UPVC塑料三通球閥Q64F-PN16，公稱壓力表示符號(hào)PN，公稱通徑表示符號(hào)DN，就是各種管子與管路附件的通用口徑。雙由令UPVC塑料三通球閥同一公稱直徑的管子與管路附件均能相互連接，具有互換性。它不是實(shí)際意義上的管道外徑或內(nèi)徑，雖然其數(shù)值跟管道內(nèi)徑較為接近或相等，為了使管子、管件連接尺寸統(tǒng)一，采用公稱直徑，也稱公稱口徑、公稱通徑。UPVC三通球閥在一定溫度下應(yīng)用時(shí)允許的大工作壓力。UPVC三通塑料球閥指70℃以下應(yīng)用時(shí)允許的大工作壓力為16公斤。當(dāng)工作溫度升高時(shí)，UPVC三通球閥,閥體的耐壓會(huì)降低。雙由令UPVC塑料三通球閥能使三條正交的管道相互聯(lián)通和切斷第三條通道，起分流、合流作用。
雙由令UPVC塑料三通球閥詳細(xì)參數(shù)：

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