二口二位式常閉，常開(kāi)型,閥體為銅鍛造，配管方式可任意角度安裝,為增強(qiáng)壽命是水平管線圈朝上產(chǎn)品為系列化生產(chǎn),體積小、流量大，膜片可采用特殊材質(zhì),耐溫達(dá)120℃,因此可用于熱水流體。
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