Where approved by code, Watts recommends a custom engineered Watts PVS Series water supply valve station consisting of two or more 719 Series valves piped in parallel to serve a larger supply main.是什么意思_Where approved by code, Watts recommends a custom engineered Watts PVS Series water supply valve station consisting of two or more 719 Series valves piped in parallel to serve a larger supply main.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句