防爆氣動不銹鋼對夾式V型球閥QV677Y氣動V型球閥VQ677Y氣動V型切斷球閥QV677Y-16P氣動V型開關(guān)球閥VQ677Y氣動V型對夾球閥VQ677F氣動V型調(diào)節(jié)球閥VQ677Y氣動不銹鋼V型調(diào)節(jié)球閥VQ677H氣動V形法蘭球閥QV677Y防爆氣動V型調(diào)節(jié)球閥QV677F防爆氣動V形球閥QV677W氣動V形調(diào)節(jié)球閥4-20mA調(diào)節(jié)型氣動V形球閥/氣動V形球閥是一種直角回轉(zhuǎn)結(jié)構(gòu)的控制閥。