The watts series tdv valve bodies have anti-rotation lugs on the inlet and outlet . these lugs, combined with the watts flange adapters, provide a ridged rotation free installation 在進(jìn)口和出口處,美國(guó)瓦茨系列tdv閥體有反旋轉(zhuǎn)凸耳。這些凸耳,結(jié)合美國(guó)瓦茨法蘭適配器,提供無(wú)旋轉(zhuǎn)安裝功能。