Provides an easy visible indication of the relative disk position. Used when the valve is mounted in high or out-of-reach locations, but frequent monitoring of the valve position is required.
英
美
- 為相關(guān)的閥瓣位置提供便于觀(guān)察的指示標志。用于當閥門(mén)安裝在高處或無(wú)法靠近的地方時(shí),但是有需要經(jīng)常觀(guān)察閥門(mén)開(kāi)啟位置的情況。
